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XCCDF
Mainframe Product Security Requirements Guide
Mainframe Product Security Requirements Guide
An XCCDF Benchmark
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193 rules organized in 193 groups
SRG-APP-000001
1 Rule
The Mainframe Product must limit the number of concurrent sessions to three for all accounts and/or account types.
Medium Severity
Application management includes the ability to control the number of users and user sessions that utilize an application. Limiting the number of allowed users and sessions per user is helpful in limiting risks related to DoS attacks. This requirement may be met via the application or by using information system session control provided by a web server with specialized session management capabilities. If it has been specified that this requirement will be handled by the application, the capability to limit the maximum number of concurrent single user sessions must be designed and built into the application. This requirement addresses concurrent sessions for information system accounts and does not address concurrent sessions by single users via multiple system accounts. The maximum number of concurrent sessions should be defined based on mission needs and the operational environment for each system.
SRG-APP-000002
1 Rule
The Mainframe Product must conceal, via the session lock, information previously visible on the display with a publicly viewable image.
Medium Severity
A session time-out lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system, but does not log out because of the temporary nature of the absence. The session lock is implemented at the point where session activity can be determined. This is typically at the operating system-level, but may be at the application-level. When the application design specifies the application rather than the operating system will determine when to lock the session, the application session lock event must include an obfuscation of the display screen so as to prevent other users from reading what was previously displayed. Publicly viewable images can include static or dynamic images, for example, patterns used with screen savers, photographic images, solid colors, a clock, a battery life indicator, or a blank screen, with the additional caveat that none of the images convey sensitive information.
SRG-APP-000003
1 Rule
The Mainframe Product must initiate a session lock after a 15-minute period of inactivity.
Medium Severity
A session time-out lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system, but does not log out because of the temporary nature of the absence. Rather than relying on the user to manually lock their application session prior to vacating the vicinity, applications need to be able to identify when a user's application session has idled and take action to initiate the session lock. The session lock is implemented at the point where session activity can be determined and/or controlled. This is typically at the operating system-level and results in a system lock, but may be at the application-level where the application interface window is secured instead.
SRG-APP-000004
1 Rule
The Mainframe Product must provide the capability for users to directly initiate a session lock.
Medium Severity
A session lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system, but does not want to log out because of the temporary nature of the absence. The session lock is implemented at the point where session activity can be determined. This is typically at the operating system-level, but may be at the application-level. Rather than be forced to wait for a period of time to expire before the user session can be locked, applications need to provide users with the ability to manually invoke a session lock so users may secure their application should the need arise for them to temporarily vacate the immediate physical vicinity.
SRG-APP-000005
1 Rule
The Mainframe Product must retain the session lock until the user reestablishes access using established identification and authentication procedures.
Medium Severity
A session lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system, but does not want to log out because of the temporary nature of the absence. The session lock is implemented at the point where session activity can be determined. This is typically determined and performed at the operating system-level, but in some instances it may be at the application-level. Regardless of where the session lock is determined and implemented, once invoked the session lock must remain in place until the user re-authenticates. No other system or application activity aside from re-authentication must unlock the system.
SRG-APP-000023
1 Rule
The Mainframe Product must use an external security manager for all account management functions.
Medium Severity
Enterprise environments make application account management challenging and complex. A manual process for account management functions adds the risk of a potential oversight or other error. A comprehensive application account management process that includes automation helps to ensure accounts designated as requiring attention are consistently and promptly addressed. Examples include, but are not limited to, using automation to take action on multiple accounts designated as inactive, suspended or terminated or by disabling accounts located in non-centralized account stores such as multiple servers. This requirement applies to all account types, including individual/user, shared, group, system, guest/anonymous, emergency, developer/manufacturer/vendor, temporary, and service. The application must be configured to automatically provide account management functions and these functions must immediately enforce the organization's current account policy. The automated mechanisms may reside within the application itself or may be offered by the operating system or other infrastructure providing automated account management capabilities. Automated mechanisms may be comprised of differing technologies that when placed together contain an overall automated mechanism supporting an organization's automated account management requirements. Account management functions include: assignment of group or role membership; identifying account type; specifying user access authorizations (i.e., privileges); account removal, update, or termination; and administrative alerts. The use of automated mechanisms can include, for example: using email or text messaging to automatically notify account managers when users are terminated or transferred; using the information system to monitor account usage; and using automated telephonic notification to report atypical system account usage.
SRG-APP-000024
1 Rule
The Mainframe Product must automatically remove or disable temporary user accounts after 72 hours.
Medium Severity
If temporary user accounts remain active when no longer needed or for an excessive period, these accounts may be used to gain unauthorized access. To mitigate this risk, automated termination of all temporary accounts must be set upon account creation. Temporary accounts are established as part of normal account activation procedures when there is a need for short-term accounts without the demand for immediacy in account activation. If temporary accounts are used, the application must be configured to automatically terminate these types of accounts after a DoD-defined time period of 72 hours. To address access requirements, many application developers choose to integrate their applications with enterprise-level authentication/access mechanisms meeting or exceeding access control policy requirements. Such integration allows the application developer to off-load those access control functions and focus on core application features and functionality.
SRG-APP-000025
1 Rule
The Mainframe Product must automatically disable accounts after 35 days of account inactivity.
Medium Severity
Attackers that are able to exploit an inactive account can potentially obtain and maintain undetected access to an application. Owners of inactive accounts will not notice if unauthorized access to their user account has been obtained. Applications need to track periods of user inactivity and disable accounts after 35 days of inactivity. Such a process greatly reduces the risk that accounts will be hijacked, leading to a data compromise. To address access requirements, many application developers choose to integrate their applications with enterprise-level authentication/access mechanisms that meet or exceed access control policy requirements. Such integration allows the application developer to off-load those access control functions and focus on core application features and functionality. This policy does not apply to either emergency accounts or infrequently used accounts. Infrequently used accounts are security administrator accounts used by system programmers when network or normal logon/access is not available. Emergency accounts are administrator accounts created in response to crisis situations.
SRG-APP-000026
1 Rule
The Mainframe Product must automatically audit account creation.
Medium Severity
Once an attacker establishes initial access to a system, the attacker often attempts to create a persistent method of re-establishing access. One way to accomplish this is for the attacker to simply create a new account. Auditing of account creation is one method for mitigating this risk. A comprehensive account management process will ensure an audit trail documents the creation of application user accounts and, as required, notifies administrators and/or application owners. Such a process greatly reduces the risk that accounts will be surreptitiously created and provides logging that can be used for forensic purposes. To address access requirements, many application developers choose to integrate their applications with enterprise-level authentication/access/auditing mechanisms meeting or exceeding access control policy requirements. Such integration allows the application developer to off-load those access control functions and focus on core application features and functionality.
SRG-APP-000027
1 Rule
The Mainframe Product must automatically audit account modification.
Medium Severity
Once an attacker establishes initial access to a system, the attacker often attempts to create a persistent method of re-establishing access. One way to accomplish this is for the attacker to simply modify an existing account. Auditing of account modification is one method for mitigating this risk. A comprehensive account management process will ensure an audit trail documents the modification of application user accounts and, as required, notifies administrators and/or application owners. Such a process greatly reduces the risk that accounts will be surreptitiously created and provides logging that can be used for forensic purposes. To address access requirements, many application developers choose to integrate their applications with enterprise-level authentication/access/auditing mechanisms meeting or exceeding access control policy requirements. Such integration allows the application developer to off-load those access control functions and focus on core application features and functionality.
SRG-APP-000028
1 Rule
The Mainframe Product must automatically audit account disabling actions.
Medium Severity
When application accounts are disabled, user accessibility is affected. Accounts are used for identifying individual application users or for identifying the application processes themselves. In order to detect and respond to events affecting user accessibility and application processing, applications must audit account disabling actions and, as required, notify the appropriate individuals, so they can investigate the event. Such a capability greatly reduces the risk that application accessibility will be negatively affected for extended periods of time and provides logging that can be used for forensic purposes. To address access requirements, many application developers choose to integrate their applications with enterprise-level authentication/access/audit mechanisms meeting or exceeding access control policy requirements. Such integration allows the application developer to off-load those access control functions and focus on core application features and functionality.
SRG-APP-000029
1 Rule
The Mainframe Product must automatically audit account removal actions.
Medium Severity
When application accounts are removed, user accessibility is affected. Accounts are used for identifying individual application users or for identifying the application processes themselves. In order to detect and respond to events affecting user accessibility and application processing, applications must audit account removal actions and, as required, notify the appropriate individuals, so they can investigate the event. Such a capability greatly reduces the risk that application accessibility will be negatively affected for extended periods of time and provides logging that can be used for forensic purposes. To address access requirements, many application developers choose to integrate their applications with enterprise-level authentication/access/audit mechanisms meeting or exceeding access control policy requirements. Such integration allows the application developer to off-load those access control functions and focus on core application features and functionality.
SRG-APP-000033
1 Rule
The Mainframe Product must enforce approved authorizations for logical access to sensitive information and system resources in accordance with applicable access control policies.
Medium Severity
To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., networks, web servers, and web portals) must be properly configured to incorporate access control methods that do not rely solely on the possession of a certificate for access. Successful authentication must not automatically give an entity access to an asset or security boundary. Authorization procedures and controls must be implemented to ensure each authenticated entity also has a validated and current authorization. Authorization is the process of determining whether an entity, once authenticated, is permitted to access a specific asset. Information systems use access control policies and enforcement mechanisms to implement this requirement. Access control policies include identity-based policies, role-based policies, and attribute-based policies. Access enforcement mechanisms include access control lists, access control matrices, and cryptography. These policies and mechanisms must be employed by the application to control access between users (or processes acting on behalf of users) and objects (e.g., devices, files, records, processes, programs, and domains) in the information system. This requirement is applicable to access control enforcement applications (e.g., authentication servers) and other applications that perform information and system access control functions.
SRG-APP-000033
1 Rule
The Mainframe Product must enforce approved authorizations for security administrator access to sensitive information and system resources in accordance with applicable access control policies.
Medium Severity
To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., networks, web servers, and web portals) must be properly configured to incorporate access control methods that do not rely solely on the possession of a certificate for access. Successful authentication must not automatically give an entity access to an asset or security boundary. Authorization procedures and controls must be implemented to ensure each authenticated entity also has a validated and current authorization. Authorization is the process of determining whether an entity, once authenticated, is permitted to access a specific asset. Information systems use access control policies and enforcement mechanisms to implement this requirement. Access control policies include identity-based policies, role-based policies, and attribute-based policies. Access enforcement mechanisms include access control lists, access control matrices, and cryptography. These policies and mechanisms must be employed by the application to control access between users (or processes acting on behalf of users) and objects (e.g., devices, files, records, processes, programs, and domains) in the information system. This requirement is applicable to access control enforcement applications (e.g., authentication servers) and other applications that perform information and system access control functions.
SRG-APP-000033
1 Rule
The Mainframe Product must enforce approved authorizations for system programmer access to sensitive information and system resources in accordance with applicable access control policies.
Medium Severity
To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., networks, web servers, and web portals) must be properly configured to incorporate access control methods that do not rely solely on the possession of a certificate for access. Successful authentication must not automatically give an entity access to an asset or security boundary. Authorization procedures and controls must be implemented to ensure each authenticated entity also has a validated and current authorization. Authorization is the process of determining whether an entity, once authenticated, is permitted to access a specific asset. Information systems use access control policies and enforcement mechanisms to implement this requirement. Access control policies include identity-based policies, role-based policies, and attribute-based policies. Access enforcement mechanisms include access control lists, access control matrices, and cryptography. These policies and mechanisms must be employed by the application to control access between users (or processes acting on behalf of users) and objects (e.g., devices, files, records, processes, programs, and domains) in the information system. This requirement is applicable to access control enforcement applications (e.g., authentication servers) and other applications that perform information and system access control functions.
SRG-APP-000038
1 Rule
The Mainframe Product must enforce approved authorizations for controlling the flow of information within the system based on site security plan information flow control policies.
Medium Severity
A mechanism to detect and prevent unauthorized communication flow must be configured or provided as part of the system design. If information flow is not enforced based on approved authorizations, the system may become compromised. Information flow control regulates where information is allowed to travel within a system and between interconnected systems. The flow of all system information must be monitored and controlled so it does not introduce any unacceptable risk to the systems or data. Application specific examples of enforcement occurs in systems that employ rule sets or establish configuration settings that restrict information system services, or message-filtering capability based on message content (e.g., implementing key word searches or using document characteristics). Applications providing information flow control must be able to enforce approved authorizations for controlling the flow of information within the system in accordance with applicable policy.
SRG-APP-000065
1 Rule
The Mainframe Product must enforce the limit of three consecutive invalid logon attempts by a user during a 15 minute time period.
Medium Severity
By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute forcing, is reduced. Limits are imposed by locking the account.
SRG-APP-000073
1 Rule
Mainframe Products scanning for malicious code must scan all media used for system maintenance prior to use.
Medium Severity
There are security-related issues arising from software brought into the information system specifically for diagnostic and repair actions (e.g., a software packet sniffer installed on a system in order to troubleshoot system traffic, or a vendor installing or running a diagnostic application in order to troubleshoot an issue with a vendor-supported system). If, upon inspection of media containing maintenance diagnostic and test programs, organizations determine that the media contain malicious code, the incident is handled consistent with organizational incident handling policies and procedures. This requirement addresses security-related issues associated with maintenance tools used specifically for diagnostic and repair actions on organizational information systems. Maintenance tools can include hardware, software, and firmware items. Maintenance tools are potential vehicles for transporting malicious code, either intentionally or unintentionally, into a facility and subsequently into organizational information systems. Maintenance tools can include, for example, hardware/software diagnostic test equipment and hardware/software packet sniffers. This requirement does not cover hardware/software components that may support information system maintenance, yet are a part of the system (e.g., the software implementing "ping," "ls," "ipconfig," or the hardware and software implementing the monitoring port of an Ethernet switch).
SRG-APP-000080
1 Rule
The Mainframe Product must protect against an individual (or process acting on behalf of an individual) falsely denying having performed actions defined in the site security plan to be covered by non-repudiation.
Medium Severity
Without non-repudiation, it is impossible to positively attribute an action to an individual (or process acting on behalf of an individual). Non-repudiation services can be used to determine if information originated from a particular individual, or if an individual took specific actions (e.g., sending an email, signing a contract, approving a procurement request) or received specific information. Non-repudiation protects individuals against later claims by an author of not having authored a particular document, a sender of not having transmitted a message, a receiver of not having received a message, or a signatory of not having signed a document. The application will be configured to provide non-repudiation services for an organization-defined set of commands that are used by the user (or processes action on behalf of the user). DoD PKI provides for non-repudiation through the use of digital signatures. Non-repudiation requirements will vary from one application to another and will be defined based on application functionality, data sensitivity and mission requirements.
SRG-APP-000086
1 Rule
For Mainframe Products providing audit record aggregation, the Mainframe Product must compile audit records from mainframe components into a system-wide audit trail that is time-correlated with a tolerance for the relationship between time stamps of individual records in the audit trail in accordance with the site security plan.
Medium Severity
Without the ability to collate records based on the time when the events occurred, the ability to perform forensic analysis and investigations across multiple components is significantly degraded. Audit trails are time-correlated if the time stamps in the individual audit records can be reliably related to the time stamps in other audit records to achieve a time ordering of the records within an organization-defined level of tolerance. This requirement applies only to Mainframe Products that provide the capability to compile system-wide audit records for multiple systems or system components.
SRG-APP-000089
1 Rule
The Mainframe Product must provide audit record generation capability for DoD-defined auditable events within all application components.
Medium Severity
Without the capability to generate audit records, it would be difficult to establish, correlate, and investigate the events relating to an incident, or identify those responsible for one. Audit records can be generated from various components within the application (e.g., process, module). Certain specific application functionalities may be audited as well. The list of audited events is the set of events for which audits are to be generated. This set of events is typically a subset of the list of all events for which the system is capable of generating audit records. DoD has defined the list of events for which the application will provide an audit record generation capability as the following: (i) Successful and unsuccessful attempts to access, modify, or delete privileges, security objects, security levels, or categories of information (e.g., classification levels); (ii) Access actions, such as successful and unsuccessful logon attempts, privileged activities or other system level access, starting and ending time for user access to the system, concurrent logons from different workstations, successful and unsuccessful accesses to objects, all program initiations, and all direct access to the information system; and (iii) All account creation, modification, disabling, and termination actions.
SRG-APP-000090
1 Rule
The Mainframe Product must allow only the information system security manager (ISSM) or individuals or roles appointed by the ISSM to select which auditable events are to be audited.
Medium Severity
Without the capability to restrict which roles and individuals can select which events are audited, unauthorized personnel may be able to prevent the auditing of critical events. Misconfigured audits may degrade the system's performance by overwhelming the audit log. Misconfigured audits may also make it more difficult to establish, correlate, and investigate the events relating to an incident, or identify those responsible for one. The list of audited events is the set of events for which audits are to be generated. This set of events is typically a subset of the list of all events for which the system is capable of generating audit records.
SRG-APP-000091
1 Rule
The Mainframe Product must generate audit records when successful/unsuccessful attempts to access privileges occur.
Medium Severity
Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident, or identify those responsible for one. Audit records can be generated from various components within the information system (e.g., module or policy filter).
SRG-APP-000092
1 Rule
The Mainframe Product must initiate session auditing upon startup.
Medium Severity
If auditing is enabled late in the start-up process, the actions of some start-up processes may not be audited. Some audit systems also maintain state information only available if auditing is enabled before a given process is created.
SRG-APP-000095
1 Rule
The Mainframe Product must produce audit records containing information to establish what type of events occurred.
Medium Severity
Without establishing what type of event occurred, it would be difficult to establish, correlate, and investigate the events relating to an incident, or identify those responsible for one. Audit record content that may be necessary to satisfy the requirement of this policy includes, for example, time stamps, source and destination addresses, user/process identifiers, event descriptions, success/fail indications, filenames involved, and access control or flow control rules invoked. Associating event types with detected events in the application and audit logs provides a means of investigating an attack; recognizing resource utilization or capacity thresholds; or identifying an improperly configured application.
SRG-APP-000096
1 Rule
The Mainframe Product must produce audit records containing information to establish when (date and time) the events occurred.
Medium Severity
Without establishing when events occurred, it is impossible to establish, correlate, and investigate the events relating to an incident. In order to compile an accurate risk assessment, and provide forensic analysis, it is essential for security personnel to know when events occurred (date and time). Associating event types with detected events in the application and audit logs provides a means of investigating an attack; recognizing resource utilization or capacity thresholds; or identifying an improperly configured application.
SRG-APP-000097
1 Rule
The Mainframe Product must produce audit records containing information to establish where the events occurred.
Medium Severity
Without establishing where events occurred, it is impossible to establish, correlate, and investigate the events relating to an incident. In order to compile an accurate risk assessment, and provide forensic analysis, it is essential for security personnel to know where events occurred, such as application components, modules, session identifiers, filenames, host names, and functionality. Associating information about where the event occurred within the application provides a means of investigating an attack; recognizing resource utilization or capacity thresholds; or identifying an improperly configured application.
SRG-APP-000098
1 Rule
The Mainframe Product must produce audit records containing information to establish the source of the events.
Medium Severity
Without establishing the source of the event, it is impossible to establish, correlate, and investigate the events leading up to an outage or attack. In addition to logging where events occur within the application, the application must also produce audit records that identify the application itself as the source of the event. In the case of centralized logging, the source would be the application name accompanied by the host or client name. In order to compile an accurate risk assessment, and provide forensic analysis, it is essential for security personnel to know the source of the event, particularly in the case of centralized logging. Associating information about the source of the event within the application provides a means of investigating an attack; recognizing resource utilization or capacity thresholds; or identifying an improperly configured application.
SRG-APP-000099
1 Rule
The Mainframe Product must produce audit records containing information to establish the outcome of the events.
Medium Severity
Without information about the outcome of events, security personnel cannot make an accurate assessment as to whether an attack was successful or if changes were made to the security state of the system. Event outcomes can include indicators of event success or failure and event-specific results (e.g., the security state of the information system after the event occurred). As such, they also provide a means to measure the impact of an event and help authorized personnel to determine the appropriate response.
SRG-APP-000100
1 Rule
The Mainframe Product must generate audit records containing information to establish the identity of any individual or process associated with the event.
Medium Severity
Without information that establishes the identity of the subjects (i.e., users or processes acting on behalf of users) associated with the events, security personnel cannot determine responsibility for the potentially harmful event. Event identifiers (if authenticated or otherwise known) include, but are not limited to, user database tables, primary key values, user names, or process identifiers.
SRG-APP-000101
1 Rule
The Mainframe Product must generate audit records containing the full-text recording of privileged commands or the individual identities of group account users.
Medium Severity
Reconstruction of harmful events or forensic analysis is not possible if audit records do not contain enough information. Organizations consider limiting the additional audit information to only that information explicitly needed for specific audit requirements. The additional information required is dependent on the type of information (i.e., sensitivity of the data and the environment within which it resides). At a minimum, the organization must audit either full-text recording of privileged commands or the individual identities of group users, or both. The organization must maintain audit trails in sufficient detail to reconstruct events to determine the cause and impact of compromise. In addition, the application must have the capability to include organization-defined additional, more detailed information in the audit records for audit events.
SRG-APP-000108
1 Rule
The Mainframe Product must alert the system administrator (SA) and information system security officer (ISSO) (at a minimum) in the event of an audit processing failure.
Medium Severity
It is critical for the appropriate personnel to be aware if a system is at risk of failing to process audit logs as required. Without this notification, the security personnel may be unaware of an impending failure of the audit capability and system operation may be adversely affected. Audit processing failures include software/hardware errors, failures in the audit capturing mechanisms, and audit storage capacity being reached or exceeded. This requirement applies to each audit data storage repository (i.e., distinct information system component where audit records are stored), the centralized audit storage capacity of organizations (i.e., all audit data storage repositories combined), or both.
SRG-APP-000111
1 Rule
The Mainframe Product must provide the capability to centrally review and analyze audit records from multiple components within the system.
Medium Severity
Successful incident response and auditing relies on timely, accurate system information and analysis in order to allow the organization to identify and respond to potential incidents in a proficient manner. If the application does not provide the ability to centrally review the application logs, forensic analysis is negatively impacted. Segregation of logging data to multiple disparate computer systems is counterproductive and makes log analysis and log event alarming difficult to implement and manage, particularly when the system or application has multiple logging components written to different locations or systems. Automated mechanisms for centralized reviews and analyses include, for example, Security Information Management products.
SRG-APP-000112
1 Rule
The Mainframe Product must prevent the execution of prohibited mobile code.
Medium Severity
Decisions regarding the employment of mobile code within organizational information systems are based on the potential for the code to cause damage to the system if used maliciously. Mobile code is defined as software modules obtained from remote systems, transferred across a network, and then downloaded and executed on a local system without explicit installation or execution by the recipient. Actions enforced before executing mobile code include, for example, prompting users prior to opening email attachments and disabling automatic execution. Usage restrictions and implementation guidance apply to both the selection and use of mobile code installed, downloaded, or executed on all endpoints (e.g., servers, workstations, and smart phones). This requirement applies to applications that execute, evaluate, or otherwise process mobile code (e.g., web applications, browsers, and anti-virus applications).
SRG-APP-000115
1 Rule
The Mainframe Products must provide the capability to filter audit records for events of interest as defined in site security plan.
Medium Severity
The ability to specify the event criteria that are of interest provides the persons reviewing the logs with the ability to quickly isolate and identify these events without having to review entries that are of little or no consequence to the investigation. Without this capability, forensic investigations are impeded. Events of interest can be identified by the content of specific audit record fields including, for example, identities of individuals, event types, event locations, event times, event dates, system resources involved, IP addresses involved, or information objects accessed. Organizations may define audit event criteria to any degree of granularity required, for example, locations selectable by general networking location (e.g., by network or subnetwork) or selectable by specific information system component. This requires applications to provide the capability to customize audit record reports based on organization-defined criteria.
SRG-APP-000116
1 Rule
The Mainframe Products must use internal system clocks to generate time stamps for audit records.
Medium Severity
Without an internal clock used as the reference for the time stored on each event to provide a trusted common reference for the time, forensic analysis would be impeded. Determining the correct time a particular event occurred on a system is critical when conducting forensic analysis and investigating system events. If the internal clock is not used, the system may not be able to provide time stamps for log messages. Additionally, externally generated time stamps may not be accurate. Applications can use the capability of an operating system or purpose-built module for this purpose.
SRG-APP-000118
1 Rule
The Mainframe Product must protect audit information from any type of unauthorized read access.
Medium Severity
If audit data were to become compromised, then competent forensic analysis and discovery of the true source of potentially malicious system activity is difficult if not impossible to achieve. In addition, access to audit records provides information an attacker could potentially use to his or her advantage. To ensure the veracity of audit data, the information system and/or the application must protect audit information from any and all unauthorized access. This includes read, write, and copy access. This requirement can be achieved through multiple methods which will depend upon system architecture and design. Commonly employed methods for protecting audit information include least privilege permissions as well as restricting the location and number of log file repositories. Additionally, applications with user interfaces to audit records should not allow for the unfettered manipulation of or access to those records via the application. If the application provides access to the audit data, the application becomes accountable for ensuring audit information is protected from unauthorized access. Audit information includes all information (e.g., audit records, audit settings, and audit reports) needed to successfully audit information system activity.
SRG-APP-000119
1 Rule
The Mainframe Product must protect audit information from unauthorized modification.
Medium Severity
If audit data were to become compromised, then forensic analysis and discovery of the true source of potentially malicious system activity is impossible to achieve. To ensure the veracity of audit data, the information system and/or the application must protect audit information from unauthorized modification. This requirement can be achieved through multiple methods, which will depend upon system architecture and design. Some commonly employed methods include ensuring log files receive the proper file system permissions, and limiting log data locations. Applications providing a user interface to audit data will leverage user permissions and roles identifying the user accessing the data and the corresponding rights that the user enjoys in order to make access decisions regarding the modification of audit data. Audit information includes all information (e.g., audit records, audit settings, and audit reports) needed to successfully audit information system activity.
SRG-APP-000120
1 Rule
The Mainframe Product must protect audit information from unauthorized deletion.
Medium Severity
If audit data were to become compromised, then forensic analysis and discovery of the true source of potentially malicious system activity is impossible to achieve. To ensure the veracity of audit data, the information system and/or the application must protect audit information from unauthorized deletion. This requirement can be achieved through multiple methods, which will depend upon system architecture and design. Some commonly employed methods include: ensuring log files receive the proper file system permissions using file system protections, restricting access, and backing up log data to ensure log data is retained. Applications providing a user interface to audit data will leverage user permissions and roles identifying the user accessing the data and the corresponding rights the user enjoys in order make access decisions regarding the deletion of audit data. Audit information includes all information (e.g., audit records, audit settings, and audit reports) needed to successfully audit information system activity. Audit information may include data from other applications or be included with the audit application itself.
SRG-APP-000121
1 Rule
The Mainframe Product must protect audit tools from unauthorized access.
Medium Severity
Protecting audit data also includes identifying and protecting the tools used to view and manipulate log data. Therefore, protecting audit tools is necessary to prevent unauthorized operation on audit data. Applications providing tools to interface with audit data will leverage user permissions and roles identifying the user accessing the tools and the corresponding rights the user enjoys in order make access decisions regarding the access to audit tools. Audit tools include, but are not limited to, vendor-provided and open source audit tools needed to successfully view and manipulate audit information system activity and records. Audit tools include custom queries and report generators.
SRG-APP-000122
1 Rule
The Mainframe Product must protect audit tools from unauthorized modification.
Medium Severity
Protecting audit data also includes identifying and protecting the tools used to view and manipulate log data. Therefore, protecting audit tools is necessary to prevent unauthorized operation on audit data. Applications providing tools to interface with audit data will leverage user permissions and roles identifying the user accessing the tools and the corresponding rights the user enjoys in order make access decisions regarding the modification of audit tools. Audit tools include, but are not limited to, vendor-provided and open source audit tools needed to successfully view and manipulate audit information system activity and records. Audit tools include custom queries and report generators.
SRG-APP-000123
1 Rule
The Mainframe Product must protect audit tools from unauthorized deletion.
Medium Severity
Protecting audit data also includes identifying and protecting the tools used to view and manipulate log data. Therefore, protecting audit tools is necessary to prevent unauthorized operation on audit data. Applications providing tools to interface with audit data will leverage user permissions and roles identifying the user accessing the tools and the corresponding rights the user enjoys in order make access decisions regarding the deletion of audit tools. Audit tools include, but are not limited to, vendor-provided and open source audit tools needed to successfully view and manipulate audit information system activity and records. Audit tools include custom queries and report generators.
SRG-APP-000131
1 Rule
The Mainframe Product must prevent the installation of patches, service packs, or application components without verification that the software component has been digitally signed using a certificate that is recognized and approved by the organization.
Medium Severity
Changes to any software components can have significant effects on the overall security of the application. Verifying software components have been digitally signed using a certificate that is recognized and approved by the organization ensures the software has not been tampered with and that it has been provided by a trusted vendor. Accordingly, patches, service packs, or application components must be signed with a certificate recognized and approved by the organization. Verifying the authenticity of the software prior to installation validates the integrity of the patch or upgrade received from a vendor. This ensures the software has not been tampered with and that it has been provided by a trusted vendor. Self-signed certificates are disallowed by this requirement. The application must not have to verify the software again. This requirement does not mandate DOD certificates for this purpose; however, the certificate used to verify the software must be from an approved CA.
SRG-APP-000133
1 Rule
The Mainframe Product must limit privileges to change the Mainframe Product installation datasets to system programmers and authorized users in accordance with applicable access control policies.
Medium Severity
If the application were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process. This requirement applies to applications with software libraries that are accessible and configurable, as in the case of interpreted languages. Software libraries also include privileged programs that execute with escalated privileges. Only qualified and authorized individuals must be allowed to obtain access to information system components for purposes of initiating changes, including upgrades and modifications.
SRG-APP-000133
1 Rule
The Mainframe Product must limit privileges to change Mainframe Product started task and job datasets to system programmers and authorized users in accordance with applicable access control policies.
Medium Severity
If the application were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process. This requirement applies to applications with software libraries that are accessible and configurable, as in the case of interpreted languages. Software libraries also include privileged programs that execute with escalated privileges. Only qualified and authorized individuals must be allowed to obtain access to information system components for purposes of initiating changes, including upgrades and modifications.
SRG-APP-000133
1 Rule
The Mainframe Product must limit privileges to change Mainframe Product user datasets to authorized individuals.
Medium Severity
If the application were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process. This requirement applies to applications with software libraries that are accessible and configurable, as in the case of interpreted languages. Software libraries also include privileged programs that execute with escalated privileges. Only qualified and authorized individuals must be allowed to obtain access to information system components for purposes of initiating changes, including upgrades and modifications.
SRG-APP-000141
1 Rule
The Mainframe Product must be configured to disable non-essential capabilities.
Medium Severity
It is detrimental for applications to provide, or install by default, functionality exceeding requirements or mission objectives. These unnecessary capabilities or services are often overlooked and therefore may remain unsecured. They increase the risk to the platform by providing additional attack vectors. Applications are capable of providing a wide variety of functions and services. Some of the functions and services, provided by default, may not be necessary to support essential organizational operations (e.g., key missions, functions). Examples of non-essential capabilities include, but are not limited to, advertising software or browser plug-ins not related to requirements or providing a wide array of functionality not required for every mission, but cannot be disabled.
SRG-APP-000148
1 Rule
The Mainframe Product must uniquely identify and authenticate organizational users (or processes acting on behalf of organizational users).
Medium Severity
To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to prevent potential misuse and compromise of the system. Organizational users include organizational employees or individuals the organization deems to have equivalent status of employees (e.g., contractors). Organizational users (and any processes acting on behalf of users) must be uniquely identified and authenticated for all accesses, except the following: (i) Accesses explicitly identified and documented by the organization. Organizations document specific user actions that can be performed on the information system without identification or authentication; and (ii) Accesses that occur through authorized use of group authenticators without individual authentication. Organizations may require unique identification of individuals in group accounts (e.g., shared privilege accounts) or for detailed accountability of individual activity.
SRG-APP-000149
1 Rule
The Mainframe Product must use multifactor authentication for network access to privileged accounts.
Medium Severity
Without the use of multifactor authentication, the ease of access to privileged functions is greatly increased. Multifactor authentication requires using two or more factors to achieve authentication. Factors include: (i) something a user knows (e.g., password/PIN); (ii) something a user has (e.g., cryptographic identification device, token); or (iii) something a user is (e.g., biometric). A privileged account is defined as an information system account with authorizations of a privileged user. Network access is defined as access to an information system by a user (or a process acting on behalf of a user) communicating through a network (e.g., local area network, wide area network, or the Internet).
SRG-APP-000150
1 Rule
The Mainframe Product must use multifactor authentication for network access to non-privileged accounts.
Medium Severity
To assure accountability and prevent unauthenticated access, non-privileged users must use multifactor authentication to prevent potential misuse and compromise of the system. Multifactor authentication uses two or more factors to achieve authentication. Factors include: (i) Something you know (e.g., password/PIN); (ii) Something you have (e.g., cryptographic identification device, token); or (iii) Something you are (e.g., biometric). A non-privileged account is any information system account with authorizations of a non-privileged user. Network access is any access to an application by a user (or process acting on behalf of a user) where said access is obtained through a network connection. Applications integrating with the DoD Active Directory and using the DoD CAC are examples of compliant multifactor authentication solutions.
SRG-APP-000151
1 Rule
The Mainframe Product must use multifactor authentication for local access to privileged accounts.
Medium Severity
To ensure accountability and prevent unauthenticated access, privileged users must use multifactor authentication to prevent potential misuse and compromise of the system. Multifactor authentication is defined as: Using two or more factors to achieve authentication. Factors include: (i) Something a user knows (e.g., password/PIN); (ii) Something a user has (e.g., cryptographic identification device, token); or (iii) Something a user is (e.g., biometric). A privileged account is defined as an information system account with authorizations of a privileged user. Local access is defined as access to an organizational information system by a user (or process acting on behalf of a user) communicating through a direct connection without the use of a network. Applications integrating with the DOD Active Directory and using the DOD CAC are examples of compliant multifactor authentication solutions.
SRG-APP-000152
1 Rule
The Mainframe Product must use multifactor authentication for local access to nonprivileged accounts.
Medium Severity
To ensure accountability, prevent unauthenticated access, and prevent misuse of the system, nonprivileged users must use multifactor authentication for local access. Multifactor authentication is defined as: Using two or more factors to achieve authentication. Factors include: (i) Something a user knows (e.g., password/PIN); (ii) Something a user has (e.g., cryptographic identification device, token); or (iii) Something a user is (e.g., biometric). A nonprivileged account is defined as an information system account with authorizations of a regular or nonprivileged user. Local access is defined as access to an organizational information system by a user (or process acting on behalf of a user) communicating through a direct connection without the use of a network. Applications integrating with the DOD Active Directory and using the DOD CAC are examples of compliant multifactor authentication solutions.
SRG-APP-000153
1 Rule
The Mainframe Product must verify users are authenticated with an individual authenticator prior to using a group authenticator.
Medium Severity
To ensure individual accountability and prevent unauthorized access, application users must be individually identified and authenticated. Individual accountability mandates that each user is uniquely identified. A group authenticator is a shared account or some other form of authentication that allows multiple unique individuals to access the application using a single account. If an application allows or provides for group authenticators, it must first individually authenticate users prior to implementing group authenticator functionality. Some applications may not have the need to provide a group authenticator; this is considered a matter of application design. In those instances where the application design includes the use of a group authenticator, this requirement will apply. There may also be instances when specific user actions need to be performed on the information system without unique user identification or authentication. An example of this type of access is a web server which contains publicly releasable information.
SRG-APP-000164
1 Rule
The Mainframe Product must enforce a minimum 15-character password length.
Medium Severity
The shorter the password, the lower the number of possible combinations that need to be tested before the password is compromised. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. Password length is one factor of several that helps to determine strength and how long it takes to crack a password. The shorter the password, the lower the number of possible combinations that need to be tested before the password is compromised. Use of more characters in a password helps to exponentially increase the time and/or resources required to compromise the password.
SRG-APP-000166
1 Rule
The Mainframe Product must enforce password complexity by requiring that at least one uppercase character be used.
Medium Severity
Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. Password complexity is one factor of several that determine how long it takes to crack a password. The more complex the password is, the greater the number of possible combinations that need to be tested before the password is compromised.
SRG-APP-000167
1 Rule
The Mainframe Product must enforce password complexity by requiring that at least one lowercase character be used.
Medium Severity
Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. Password complexity is one factor of several that determine how long it takes to crack a password. The more complex the password, the greater the number of possible combinations that need to be tested before the password is compromised.
SRG-APP-000168
1 Rule
The Mainframe Product must enforce password complexity by requiring that at least one numeric character be used.
Medium Severity
Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. Password complexity is one factor of several that determine how long it takes to crack a password. The more complex the password, the greater the number of possible combinations that need to be tested before the password is compromised.
SRG-APP-000169
1 Rule
The Mainframe Product must enforce password complexity by requiring that at least one special character be used.
Medium Severity
Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. Password complexity is one factor in determining how long it takes to crack a password. The more complex the password, the greater the number of possible combinations that need to be tested before the password is compromised. Special characters are characters that are not alphanumeric. Examples include: ~ ! @ # $ % ^ *.
SRG-APP-000170
1 Rule
The Mainframe Product must require the change of at least eight of the total number of characters when passwords are changed.
Medium Severity
If the application allows the user to consecutively reuse extensive portions of passwords, this increases the chances of password compromise by increasing the window of opportunity for attempts at guessing and brute-force attacks. The number of changed characters refers to the number of changes required with respect to the total number of positions in the current password. In other words, characters may be the same within the two passwords; however, the positions of the like characters must be different.
SRG-APP-000171
1 Rule
The Mainframe Product must store only cryptographically protected passwords.
Medium Severity
Passwords need to be protected at all times and encryption is the standard method for protecting passwords. If passwords are not encrypted, they can be plainly read (i.e., clear text) and easily compromised. Applications must enforce password encryption when storing passwords.
SRG-APP-000172
1 Rule
The Mainframe Product must transmit only cryptographically protected passwords.
Medium Severity
Passwords need to be protected at all times and encryption is the standard method for protecting passwords. If passwords are not encrypted, they can be plainly read (i.e., clear text) and easily compromised. Applications can accomplish this by making direct function calls to encryption modules or by leveraging operating system encryption capabilities.
SRG-APP-000173
1 Rule
The Mainframe Product must enforce 24 hours/1 day as the minimum password lifetime.
Medium Severity
Enforcing a minimum password lifetime helps prevent repeated password changes to defeat the password reuse or history enforcement requirement. Restricting this setting limits the user's ability to change their password. Passwords need to be changed at specific policy-based intervals; however, if the application allows the user to immediately and continually change their password, then the password could be repeatedly changed in a short period of time to defeat the organization's policy regarding password reuse.
SRG-APP-000174
1 Rule
The Mainframe Product must enforce a 60-day maximum password lifetime restriction.
Medium Severity
Any password, no matter how complex, can eventually be cracked; therefore, passwords need to be changed at specific intervals. One method of minimizing this risk is to use complex passwords and periodically change them. If the application does not limit the lifetime of passwords and force users to change their passwords, there is the risk that the system and/or application passwords could be compromised. This requirement does not include emergency administration accounts that are meant for access to the application in case of failure. These accounts are not required to have maximum password lifetime restrictions.
SRG-APP-000175
1 Rule
The Mainframe Product, when using PKI-based authentication, must validate certificates by constructing a certification path (which includes status information) to an accepted trust anchor.
Medium Severity
Without path validation, an informed trust decision by the relying party cannot be made when presented with any certificate not already explicitly trusted. A trust anchor is an authoritative entity represented via a public key and associated data. It is used in the context of public key infrastructures, X.509 digital certificates, and DNSSEC. When there is a chain of trust, usually the top entity to be trusted becomes the trust anchor; it can be, for example, a Certification Authority (CA). A certification path starts with the subject certificate and proceeds through a number of intermediate certificates up to a trusted root certificate, typically issued by a trusted CA. This requirement verifies that a certification path to an accepted trust anchor is used for certificate validation and that the path includes status information. Path validation is necessary for a relying party to make an informed trust decision when presented with any certificate not already explicitly trusted. Status information for certification paths includes certificate revocation lists or online certificate status protocol responses. Validation of the certificate status information is out of scope for this requirement.
SRG-APP-000176
1 Rule
The Mainframe Product, when using PKI-based authentication, must enforce authorized access to the corresponding private key.
Medium Severity
If the private key is discovered, an attacker can use the key to authenticate as an authorized user and gain access to the network infrastructure. The cornerstone of the PKI is the private key used to encrypt or digitally sign information. If the private key is stolen, this will lead to the compromise of the authentication and non-repudiation gained through PKI because the attacker can use the private key to digitally sign documents and pretend to be the authorized user. Both the holders of a digital certificate and the issuing authority must protect the computers, storage devices, or whatever they use to keep the private keys.
SRG-APP-000177
1 Rule
The Mainframe Product must map the authenticated identity to the individual user or group account for PKI-based authentication.
Medium Severity
Without mapping the certificate used to authenticate to the user account, the ability to determine the identity of the individual user or group will not be available for forensic analysis.
SRG-APP-000178
1 Rule
The Mainframe Product must obscure feedback of authentication information during the authentication process to protect the information from possible exploitation/use by unauthorized individuals.
Medium Severity
To prevent the compromise of authentication information such as passwords during the authentication process, the feedback from the information system must not provide any information that would allow an unauthorized user to compromise the authentication mechanism. Obfuscation of user-provided information when typed into the system is a method used in addressing this risk. Displaying asterisks when a user types in a password is an example of obscuring feedback of authentication information.
SRG-APP-000179
1 Rule
The Mainframe Product must use mechanisms meeting the requirements of applicable federal laws, Executive orders, directives, policies, regulations, standards, and guidance for authentication to a cryptographic module.
Medium Severity
Unapproved mechanisms that are used for authentication to the cryptographic module are not verified and therefore cannot be relied on to provide confidentiality or integrity, and DoD data may be compromised. Applications using encryption are required to use FIPS-compliant mechanisms for authenticating to cryptographic modules. FIPS 140-2 is the current standard for validating that mechanisms used to access cryptographic modules use authentication that meets DoD requirements.
SRG-APP-000180
1 Rule
The Mainframe Product must uniquely identify and authenticate non-organizational users (or processes acting on behalf of non-organizational users).
Medium Severity
Lack of authentication and identification enables non-organizational users to gain access to the application or possibly other information systems and provides an opportunity for intruders to compromise resources within the application or information system. Non-organizational users include all information system users other than organizational users which include organizational employees or individuals the organization deems to have equivalent status of employees (e.g., contractors and guest researchers). Non-organizational users must be uniquely identified and authenticated for all accesses other than those accesses explicitly identified and documented by the organization when related to the use of anonymous access, such as accessing a web server.
SRG-APP-000181
1 Rule
The Mainframe Product must provide an audit reduction capability that supports on-demand reporting requirements.
Medium Severity
The ability to generate on-demand reports, including after the audit data has been subjected to audit reduction, greatly facilitates the organization's ability to generate incident reports as needed to better handle larger-scale or more complex security incidents. Audit reduction is a process that manipulates collected audit information and organizes such information in a summary format that is more meaningful to analysts. The report generation capability provided by the application must support on-demand (i.e., customizable, ad-hoc, and as-needed) reports. This requirement is specific to applications with audit reduction capabilities; however, applications need to support on-demand audit review and analysis.
SRG-APP-000206
1 Rule
The Mainframe Product must identify prohibited mobile code.
Medium Severity
Decisions regarding the employment of mobile code within applications are based on the potential for the code to cause damage to the system if used maliciously. Mobile code is defined as software modules obtained from remote systems, transferred across a network, and then downloaded and executed on a local system without explicit installation or execution by the recipient. DoD has identified prohibited mobile code in DoDI 8552.01 as: all Category 1X mobile code, unsigned Category 1A mobile code, Category 2 mobile code that violates usage requirements, all Emerging Technologies mobile code (all mobile code technologies, systems, platforms, or languages whose capabilities and threat level have not yet undergone a risk assessment and been assigned to a risk category), and all mobile code that downloads via an email body or email attachment that executes automatically when the user opens the email body or attachment. Usage restrictions and implementation guidance apply to both the selection and use of mobile code installed, downloaded, or executed on all endpoints (e.g., servers, workstations, and smart phones). This requirement applies to applications that execute, evaluate, or otherwise process mobile code (e.g., web applications, browsers, and anti-virus applications).
SRG-APP-000207
1 Rule
The Mainframe Product must block, quarantine, and/or alert system administrators when prohibited mobile code is identified.
Medium Severity
Decisions regarding the employment of mobile code within organizational information systems are based on the potential for the code to cause damage to the system if used maliciously. Mobile code is defined as software modules obtained from remote systems, transferred across a network, and then downloaded and executed on a local system without explicit installation or execution by the recipient. DoD has defined the corrective actions to be taken, when prohibited mobile code is identified, in DoDI 8552.01, "Use of Mobile Code Technologies in DoD Information Systems". DoD has identified prohibited mobile code in DoDI 8552.01 as: all Category 1X mobile code, unsigned Category 1A mobile code, Category 2 mobile code that violates usage requirements, all Emerging Technologies mobile code (all mobile code technologies, systems, platforms, or languages whose capabilities and threat level have not yet undergone a risk assessment and been assigned to a risk category), and all mobile code that downloads via an email body or email attachment that executes automatically when the user opens the email body or attachment. Usage restrictions and implementation guidance apply to both the selection and use of mobile code installed, downloaded, or executed on all endpoints (e.g., servers, workstations, and smart phones). This requirement applies to applications that execute, evaluate, or otherwise process mobile code (e.g., web applications, browsers, and anti-virus applications). Corrective actions when unacceptable mobile code is detected include, for example, blocking, quarantine, or alerting administrators. Blocking includes, for example, preventing transmission of word processing files with embedded macros when such macros have been defined to be unacceptable mobile code.
SRG-APP-000209
1 Rule
The Mainframe Product must prevent the download of prohibited mobile code.
Medium Severity
Decisions regarding the employment of mobile code within organizational information systems are based on the potential for the code to cause damage to the system if used maliciously. Mobile code is defined as software modules obtained from remote systems, transferred across a network, and then downloaded and executed on a local system without explicit installation or execution by the recipient. Usage restrictions and implementation guidance apply to both the selection and use of mobile code installed, downloaded, or executed on all endpoints (e.g., servers, workstations, and smart phones). This requirement applies to applications that execute, evaluate, or otherwise process mobile code (e.g., web applications, browsers, and anti-virus applications).
SRG-APP-000210
1 Rule
The Mainframe Product must prevent the automatic execution of mobile code in, at a minimum, office applications, browsers, email clients, mobile code run-time environments, and mobile agent systems.
Medium Severity
Mobile code can cause damage to the system. It can execute without explicit action from, or notification to, a user. Preventing automatic execution of mobile code includes, for example, disabling auto execute features on information system components. This requirement applies to mobile code-enabled software, which is capable of executing one or more types of mobile code.
SRG-APP-000211
1 Rule
The Mainframe Product must separate user functionality (including user interface services) from information system management functionality.
Medium Severity
Application management functionality includes functions necessary for administration and requires privileged user access. Allowing non-privileged users to access application management functionality capabilities increases the risk that non-privileged users may obtain elevated privileges. The separation of user functionality from information system management functionality is either physical or logical and is accomplished by using different computers, different central processing units, different instances of the operating system, different network addresses, different TCP/UDP ports, virtualization techniques, combinations of these methods, or other methods, as appropriate. An example of this type of separation is observed in web administrative interfaces that use separate authentication methods for users of any other information system resources. This may include isolating the administrative interface on a different security domain and with additional access controls.
SRG-APP-000225
1 Rule
The Mainframe Product must fail to a secure state if system initialization fails, shutdown fails, or aborts fail.
Medium Severity
Failure to a known safe state helps prevent systems from failing to a state that may cause loss of data or unauthorized access to system resources. Applications or systems that fail suddenly and with no incorporated failure state planning may leave the hosting system available but with a reduced security protection capability. Preserving information system state information also facilitates system restart and return to the operational mode of the organization with less disruption of mission-essential processes. In general, application security mechanisms should be designed so that a failure will follow the same execution path as disallowing the operation. For example, security methods, such as is Authorized(), is Authenticated(), and validate(), should all return false if there is an exception during processing. If security controls can throw exceptions, they must be very clear about exactly what that condition means. Abort refers to stopping a program or function before it has finished naturally. The term abort refers to both requested and unexpected terminations.
SRG-APP-000226
1 Rule
In the event of application failure, Mainframe Products must preserve any information necessary to determine the cause of failure and any information necessary to return to operations with the least disruption to mission processes.
Medium Severity
Failure to a known state can address safety or security in accordance with the mission/business needs of the organization. Failure to a known secure state helps prevent a loss of confidentiality, integrity, or availability in the event of a failure of the information system or a component of the system. Preserving application state information helps to facilitate application restart and return to the operational mode of the organization with less disruption to mission-essential processes.
SRG-APP-000231
1 Rule
The Mainframe Product must protect the confidentiality and integrity of all information at rest.
Medium Severity
Information at rest refers to the state of information when it is located on a secondary storage device (e.g., disk drive and tape drive) within an organizational information system. Mobile devices, laptops, desktops, and storage devices can be either lost or stolen, and the contents of their data storage (e.g., hard drives and non-volatile memory) can be read, copied, or altered. Applications and application users generate information throughout the course of their application use. This requirement addresses protection of user-generated data, as well as, operating system-specific configuration data. Organizations may choose to employ different mechanisms to achieve confidentiality and integrity protections, as appropriate, in accordance with the security category and/or classification of the information.
SRG-APP-000233
1 Rule
The Mainframe Product must isolate security functions from nonsecurity functions.
Medium Severity
An isolation boundary provides access control and protects the integrity of the hardware, software, and firmware that perform security functions. Security functions are the hardware, software, and/or firmware of the information system responsible for enforcing the system security policy and supporting the isolation of code and data on which the protection is based. Developers and implementers can increase the assurance in security functions by employing well-defined security policy models; structured, disciplined, and rigorous hardware and software development techniques; and sound system/security engineering principles. Implementation may include isolation of memory space and libraries. Applications restrict access to security functions through the use of access control mechanisms and by implementing least privilege capabilities.
SRG-APP-000234
1 Rule
The Mainframe Product must be configured such that emergency accounts are never automatically removed or disabled.
Medium Severity
Emergency accounts are administrator accounts which are established in response to crisis situations where the need for rapid account activation is required. Therefore, emergency account activation may bypass normal account authorization processes. If these accounts are automatically disabled, system maintenance during emergencies may not be possible, thus adversely affecting system availability. Emergency accounts are different from infrequently used accounts (i.e., local logon accounts used by system administrators when network or normal logon/access is not available). Infrequently used accounts also remain available and are not subject to automatic termination dates. However, an emergency account is normally a different account which is created for use by vendors or system maintainers. To address access requirements, many application developers choose to integrate their applications with enterprise-level authentication/access mechanisms that meet or exceed access control policy requirements. Such integration allows the application developer to off-load those access control functions and focus on core application features and functionality.
SRG-APP-000251
1 Rule
The Mainframe Product must check the validity of all data inputs except those specifically identified by the organization.
Medium Severity
Invalid user input occurs when a user inserts data or characters into an application's data entry fields and the application is unprepared to process that data. This results in unanticipated application behavior, potentially leading to an application or information system compromise. Invalid input is one of the primary methods employed when attempting to compromise an application. Checking the valid syntax and semantics of information system inputs (e.g., character set, length, numerical range, and acceptable values) verifies that inputs match specified definitions for format and content. Software applications typically follow well-defined protocols that use structured messages (i.e., commands or queries) to communicate between software modules or system components. Structured messages can contain raw or unstructured data interspersed with metadata or control information. If software applications use attacker-supplied inputs to construct structured messages without properly encoding such messages, then the attacker could insert malicious commands or special characters that can cause the data to be interpreted as control information or metadata. Consequently, the module or component that receives the tainted output will perform the wrong operations or otherwise interpret the data incorrectly. Prescreening inputs prior to passing to interpreters prevents the content from being unintentionally interpreted as commands. Input validation helps to ensure accurate and correct inputs and prevent attacks such as cross-site scripting and a variety of injection attacks.
SRG-APP-000266
1 Rule
The Mainframe Product must generate error messages that provide information necessary for corrective actions without revealing information that could be exploited by adversaries.
Medium Severity
Any application providing too much information in error messages risks compromising the data and security of the application and system. The structure and content of error messages needs to be carefully considered by the organization and development team. Organizations carefully consider the structure/content of error messages. The extent to which information systems are able to identify and handle error conditions is guided by organizational policy and operational requirements. Information that could be exploited by adversaries includes, for example, erroneous logon attempts with passwords entered by mistake as the username, mission/business information that can be derived from (if not stated explicitly by) information recorded, and personal information, such as account numbers, social security numbers, and credit card numbers.
SRG-APP-000267
1 Rule
The Mainframe Product must reveal full-text detail error messages only to system programmers and/or security administrators.
Medium Severity
Only authorized personnel should be aware of errors and the details of the errors. Error messages are an indicator of an organization's operational state or can identify the application. Additionally, Personally Identifiable Information (PII) and operational information must not be revealed through error messages to unauthorized personnel or their designated representatives. The structure and content of error messages must be carefully considered by the organization and development team. The extent to which the information system is able to identify and handle error conditions is guided by organizational policy and operational requirements.
SRG-APP-000272
1 Rule
The Mainframe Product must update malicious code protection mechanisms whenever new releases are available in accordance with organizational configuration management policy.
Medium Severity
Malicious software detection applications need to be constantly updated in order to identify new threats as they are discovered. All malicious software detection software must come with an update mechanism that automatically updates the application and any associated signature definitions. The organization (including any contractor to the organization) is required to promptly install security-relevant malicious code protection software updates. Examples of relevant updates include antivirus signatures, detection heuristic rule sets, and/or file reputation data employed to identify and/or block malicious software from executing. Malicious code includes viruses, worms, Trojan horses, and spyware. This requirement applies to applications providing malicious code protection.
SRG-APP-000275
1 Rule
The Mainframe product must notify the system programmer and security administrator of failed security verification tests.
Medium Severity
If personnel are not notified of failed security verification tests, they will not be able to take corrective action and the unsecure condition(s) will remain. Security function is defined as the hardware, software, and/or firmware of the information system responsible for enforcing the system security policy and supporting the isolation of code and data on which the protection is based. Security functionality includes, but is not limited to, establishing system accounts, configuring access authorizations (i.e., permissions, privileges), setting events to be audited, and setting intrusion detection parameters. Notifications provided by information systems include messages to local computer consoles, and/or hardware indications, such as lights. This requirement applies to applications performing security functions and the applications performing security function verification/testing.
SRG-APP-000276
1 Rule
The Mainframe Product must update malicious code protection mechanisms whenever new releases are available in accordance with organizational configuration management procedures.
Medium Severity
Malicious code includes viruses, worms, Trojan horses, and spyware. Malicious code specific to mainframes may be any code that corrupts system files. The code provides the ability for a malicious user to read from and write to files and folders on a computer's hard drive. Malicious code may also be able to run and attach programs, which may allow the unauthorized distribution of malicious mobile code. Once this code is installed on endpoints within the network, unauthorized users may be able to breach firewalls and gain access to sensitive data. This requirement applies to applications providing malicious code protection. Malicious code protection mechanisms include, but are not limited to, antivirus and malware detection software. Malicious code protection mechanisms specific to Mainframe Products are designed to periodically scan system files to validate their integrity. Malicious code protection mechanisms (including signature definitions and rule sets) must be updated when new releases are available.
SRG-APP-000277
1 Rule
The Mainframe Product must configure malicious code protection mechanisms to perform periodic scans of the information system every seven days.
Medium Severity
Malicious code protection mechanisms include, but are not limited to, anti-virus and malware detection software. Malicious code protection mechanisms specific to Mainframe Products are designed to periodically scan system files to validate their integrity. In order to minimize potential negative impact to the organization that can be caused by malicious code, it is imperative that malicious code is identified and eradicated. Malicious code includes viruses, worms, Trojan horses, and spyware. It is not enough to simply have the software installed; this software must periodically scan the system to search for malware on an organization-defined frequency. This requirement applies to applications providing malicious code protection.
SRG-APP-000290
1 Rule
The Mainframe Product must use cryptographic mechanisms to protect the integrity of audit tools.
Medium Severity
Protecting the integrity of the tools used for auditing purposes is a critical step to ensuring the integrity of audit data. Audit data includes all information (e.g., audit records, audit settings, and audit reports) needed to successfully audit information system activity. Audit tools include, but are not limited to, vendor-provided and open source audit tools needed to successfully view and manipulate audit information system activity and records. Audit tools include custom queries and report generators. It is not uncommon for attackers to replace the audit tools or inject code into the existing tools with the purpose of providing the capability to hide or erase system activity from the audit logs. To address this risk, audit tools must be cryptographically signed in order to provide the capability to identify when the audit tools have been modified, manipulated, or replaced. An example is a checksum hash of the file or files.
SRG-APP-000291
1 Rule
The Mainframe Product must notify system programmers and security administrators when accounts are created.
Medium Severity
Once an attacker establishes access to an application, the attacker often attempts to create a persistent method of re-establishing access. One way to accomplish this is for the attacker to simply create a new account. Sending notification of account creation events to the system administrator (SA) and information security system officer (ISSO) is one method for mitigating this risk. To address access requirements, many application developers choose to integrate their applications with enterprise-level authentication/access/auditing mechanisms that meet or exceed access control policy requirements. Such integration allows the application developer to offload those access control functions and focus on core application features and functionality.
SRG-APP-000292
1 Rule
The Mainframe Product must notify system programmers and security administrators when accounts are modified.
Medium Severity
When application accounts are modified, user accessibility is affected. Accounts are utilized for identifying individual users or for identifying the application processes themselves. Sending notification of account modification events to the system administrator (SA) and information system security officer (ISSO) is one method for mitigating this risk. Such a capability greatly reduces the risk that application accessibility will be negatively affected for extended periods of time and also provides logging that can be used for forensic purposes. To address access requirements, many operating systems can be integrated with enterprise-level authentication/access/auditing mechanisms that meet or exceed access control policy requirements.
SRG-APP-000293
1 Rule
The Mainframe Product must notify system programmers and security administrators for account disabling actions.
Medium Severity
When application accounts are disabled, user accessibility is affected. Accounts are utilized for identifying individual users or for identifying the application processes themselves. Sending notification of account disabling events to the system administrator (SA) and information system security officer (ISSO) is one method for mitigating this risk. Such a capability greatly reduces the risk that application accessibility will be negatively affected for extended periods of time and also provides logging that can be used for forensic purposes. To address access requirements, many operating systems can be integrated with enterprise-level authentication/access/auditing mechanisms that meet or exceed access control policy requirements.
SRG-APP-000294
1 Rule
The Mainframe Product must notify system programmers and security administrators for account removal actions.
Medium Severity
When application accounts are removed, user accessibility is affected. Accounts are utilized for identifying users or for identifying the application processes themselves. Sending notification of account removal events to the system administrator (SA) and information system security officer (ISSO) is one method for mitigating this risk. Such a capability greatly reduces the risk that application accessibility will be negatively affected for extended periods of time and also provides logging that can be used for forensic purposes. To address access requirements, many operating systems can be integrated with enterprise-level authentication/access/auditing mechanisms that meet or exceed access control policy requirements.
SRG-APP-000295
1 Rule
The Mainframe Product must automatically terminate a user session after conditions, as defined in site security plan, are met or trigger events requiring session disconnect.
Medium Severity
Automatic session termination addresses the termination of user-initiated logical sessions in contrast to the termination of network connections that are associated with communications sessions (i.e., network disconnect). A logical session (for local, network, and remote access) is initiated whenever a user (or process acting on behalf of a user) accesses an organizational information system. Such user sessions can be terminated (and thus terminate user access) without terminating network sessions. Session termination terminates all processes associated with a user's logical session except those processes that are specifically created by the user (i.e., session owner) to continue after the session is terminated. Conditions or trigger events requiring automatic session termination can include, for example, organization-defined periods of user inactivity, targeted responses to certain types of incidents, and time-of-day restrictions on information system use. This capability is typically reserved for specific application system functionality where the system owner, data owner, or organization requires additional assurance. Based on requirements and events specified by the data or application owner, the application developer must incorporate logic into the application that will provide a control mechanism that disconnects users upon the defined event trigger. The methods for incorporating this requirement will be determined and specified on a case by case basis during the application design and development stages.
SRG-APP-000296
1 Rule
Mainframe Products requiring user access authentication must provide a logoff capability for a user-initiated communication session.
Medium Severity
If a user cannot explicitly end an application session, the session may remain open and be exploited by an attacker; this is referred to as a zombie session. Information resources to which users gain access via authentication include, for example, local workstations, databases, and password-protected websites/web-based services. However, for some types of interactive sessions including, for example, file transfer protocol (FTP) sessions, information systems typically send logoff messages as final messages prior to terminating sessions.
SRG-APP-000297
1 Rule
The Mainframe Product must display an explicit logoff message to users indicating the reliable termination of authenticated communications sessions.
Medium Severity
If a user cannot explicitly end an application session, the session may remain open and be exploited by an attacker; this is referred to as a zombie session. Users need to be aware of whether or not the session has been terminated. Information resources to which users gain access via authentication include, for example, local workstations, databases, and password-protected websites/web-based services. Logoff messages for web page access, for example, can be displayed after authenticated sessions have been terminated. However, for some types of interactive sessions including, for example, file transfer protocol (FTP) sessions, information systems typically send logoff messages as final messages prior to terminating sessions.
SRG-APP-000311
1 Rule
The Mainframe Product must associate types of security attributes having security attribute values as defined in site security plan with information in storage.
Medium Severity
Without the association of security attributes to information, there is no basis for the application to make security related access-control decisions. Security attributes are abstractions representing the basic properties or characteristics of an entity (e.g., subjects and objects) with respect to safeguarding information. These attributes are typically associated with internal data structures (e.g., records, buffers, files) within the information system and are used to enable the implementation of access control and flow control policies, reflect special dissemination, handling or distribution instructions, or support other aspects of the information security policy. One example includes marking data as classified or FOUO. These security attributes may be assigned manually or during data processing but either way, it is imperative these assignments are maintained while the data is in storage. If the security attributes are lost when the data is stored, there is the risk of a data compromise.
SRG-APP-000313
1 Rule
The Mainframe Product must associate types of security attributes having security attribute values as defined in site security plan with information in process.
Medium Severity
Without the association of security attributes to information, there is no basis for the application to make security related access-control decisions. Security attributes are abstractions representing the basic properties or characteristics of an entity (e.g., subjects and objects) with respect to safeguarding information. These attributes are typically associated with internal data structures (e.g., records, buffers, files) within the information system and are used to enable the implementation of access control and flow control policies, reflect special dissemination, handling or distribution instructions, or support other aspects of the information security policy. One example includes marking data as classified or FOUO. These security attributes may be assigned manually or during data processing but either way, it is imperative these assignments are maintained while the data is in process. If the security attributes are lost when the data is being processed, there is the risk of a data compromise.
SRG-APP-000317
1 Rule
The Mainframe Product must terminate shared/group account credentials when members leave the group.
Medium Severity
If shared/group account credentials are not terminated when individuals leave the group, the user that left the group can still gain access even though they are no longer authorized. A shared/group account credential is a shared form of authentication that allows multiple individuals to access the application using a single account. There may also be instances when specific user actions need to be performed on the information system without unique user identification or authentication. Examples of credentials include passwords and group membership certificates.
SRG-APP-000319
1 Rule
The Mainframe Product must automatically audit account enabling actions.
Medium Severity
Once an attacker establishes access to an application, the attacker often attempts to create a persistent method of re-establishing access. One way to accomplish this is for the attacker to simply enable a new or disabled account. Automatically auditing account enabling actions provides logging that can be used for forensic purposes. To address access requirements, many application developers choose to integrate their applications with enterprise-level authentication/access/auditing mechanisms that meet or exceed access control policy requirements. Such integration allows the application developer to off-load those access control functions and focus on core application features and functionality.
SRG-APP-000320
1 Rule
The Mainframe Product must notify system programmers and security administrators of account enabling actions.
Medium Severity
Once an attacker establishes access to an application, the attacker often attempts to create a persistent method of re-establishing access. One way to accomplish this is for the attacker to simply enable a new or disabled account. Sending notification of account enabling events to the system administrator (SA) and information system security officer (ISSO) is one method for mitigating this risk. Such a capability greatly reduces the risk that application accessibility will be negatively affected for extended periods of time and also provides logging that can be used for forensic purposes. To detect and respond to events that affect user accessibility and application processing, applications must notify the appropriate individuals so they can investigate the event. To address access requirements, many application developers choose to integrate their applications with enterprise-level authentication/access/auditing mechanisms that meet or exceed access control policy requirements. Such integration allows the application developer to offload those access control functions and focus on core application features and functionality.
SRG-APP-000328
1 Rule
The Mainframe Product must enforce organization-defined discretionary access control policies over defined subjects and objects.
Medium Severity
Discretionary Access Control (DAC) is based on the notion that individual users are "owners" of objects and therefore have discretion over who should be authorized to access the object and in which mode (e.g., read or write). Ownership is usually acquired as a consequence of creating the object or via specified ownership assignment. DAC allows the owner to determine who will have access to objects they control. An example of DAC includes user-controlled file permissions. When discretionary access control policies are implemented, subjects are not constrained with regard to what actions they can take with information for which they have already been granted access. Thus, subjects that have been granted access to information are not prevented from passing (i.e., the subjects have the discretion to pass) the information to other subjects or objects. A subject that is constrained in its operation by Mandatory Access Control policies is still able to operate under the less rigorous constraints of this requirement. Thus, while Mandatory Access Control imposes constraints preventing a subject from passing information to another subject operating at a different sensitivity level, this requirement permits the subject to pass the information to any subject at the same sensitivity level. The policy is bounded by the information system boundary. Once the information is passed outside of the control of the information system, additional means may be required to ensure the constraints remain in effect. While the older, more traditional definitions of discretionary access control require identity-based access control, that limitation is not required for this use of discretionary access control.
SRG-APP-000340
1 Rule
The Mainframe Product must prevent non-privileged users from executing privileged functions to include disabling, circumventing, or altering implemented security safeguards/countermeasures.
Medium Severity
Preventing non-privileged users from executing privileged functions mitigates the risk that unauthorized individuals or processes may gain unnecessary access to information or privileges. Privileged functions include, for example, establishing accounts, performing system integrity checks, or administering cryptographic key management activities. Non-privileged users are individuals that do not possess appropriate authorizations. Circumventing intrusion detection and prevention mechanisms or malicious code protection mechanisms are examples of privileged functions that require protection from non-privileged users.
SRG-APP-000342
1 Rule
The Mainframe Product must prevent software as identified in the site security plan from executing at higher privilege levels than users executing the software.
Medium Severity
In certain situations, software applications/programs need to execute with elevated privileges to perform required functions. However, if the privileges required for execution are at a higher level than the privileges assigned to organizational users invoking such applications/programs, those users are indirectly provided with greater privileges than assigned by organizations.
SRG-APP-000343
1 Rule
The Mainframe Product must audit the execution of privileged functions.
Medium Severity
Misuse of privileged functions, either intentionally or unintentionally by authorized users, or by unauthorized external entities that have compromised information system accounts, is a serious and ongoing concern and can have significant adverse impacts on organizations. Auditing the use of privileged functions is one way to detect such misuse, and identify the risk from insider threats and the advanced persistent threat.
SRG-APP-000345
1 Rule
The Mainframe Product must automatically lock the account until the locked account is released by an administrator when three unsuccessful logon attempts in 15 minutes are exceeded.
Medium Severity
By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute forcing, is reduced. Limits are imposed by locking the account.
SRG-APP-000357
1 Rule
The mainframe product must allocate audit record storage capacity in accordance with organization-defined audit record storage requirements.
Medium Severity
In order to ensure applications have a sufficient storage capacity in which to write the audit logs, applications need to be able to allocate audit record storage capacity. The task of allocating audit record storage capacity is usually performed during initial installation of the application and is closely associated with the DBA and system administrator roles. The DBA or system administrator will usually coordinate the allocation of physical drive space with the application owner/installer and the application will prompt the installer to provide the capacity information, the physical location of the disk, or both.
SRG-APP-000358
1 Rule
The Mainframe Product must off-load audit records onto a different system or media than the system being audited.
Medium Severity
Information stored in one location is vulnerable to accidental or incidental deletion or alteration. Off-loading is a common process in information systems with limited audit storage capacity.
SRG-APP-000359
1 Rule
The Mainframe Product must provide an immediate warning to the system programmer and security administrator (at a minimum) when allocated audit record storage volume reaches 75 percent of repository maximum audit record storage capacity.
Medium Severity
If security personnel are not notified immediately upon storage volume utilization reaching 75 percent, they are unable to plan for storage capacity expansion.
SRG-APP-000360
1 Rule
The Mainframe Product must provide an immediate real-time alert to the operations staff, system programmers, and/or security administrators, at a minimum, of all audit failure events requiring real-time alerts.
Medium Severity
It is critical for the appropriate personnel to be aware if a system is at risk of failing to process audit logs as required. Without a real-time alert, security personnel may be unaware of an impending failure of the audit capability and system operation may be adversely affected. Alerts provide organizations with urgent messages. Real-time alerts provide these messages immediately (i.e., the time from event detection to alert occurs in seconds or less).
SRG-APP-000364
1 Rule
The Mainframe Product must provide an audit reduction capability that supports on-demand audit review and analysis.
Medium Severity
The ability to perform on-demand audit review and analysis, including after the audit data has been subjected to audit reduction, greatly facilitates the organization's ability to generate incident reports as needed to better handle larger-scale or more complex security incidents. Audit reduction is a technique used to reduce the volume of audit records in order to facilitate a manual review. Audit reduction does not alter original audit records. The report generation capability provided by the application must support on-demand (i.e., customizable, ad-hoc, and as-needed) reports. This requirement is specific to applications with audit reduction capabilities; however, applications need to support on-demand audit review and analysis.
SRG-APP-000365
1 Rule
The Mainframe Product must provide an audit reduction capability that supports after-the-fact investigations of security incidents.
Medium Severity
If the audit reduction capability does not support after-the-fact investigations, it is difficult to establish, correlate, and investigate the events leading up to an outage or attack, or identify those responses for one. This capability is also required to comply with applicable Federal laws and DoD policies. Audit reduction capability must support after-the-fact investigations of security incidents either natively or through the use of third-party tools. This requirement is specific to applications with audit reduction capabilities.
SRG-APP-000366
1 Rule
The Mainframe Product must provide a report generation capability that supports on-demand audit review and analysis.
Medium Severity
The report generation capability must support on-demand review and analysis in order to facilitate the organization's ability to generate incident reports as needed to better handle larger-scale or more complex security incidents. Report generation must be capable of generating on-demand (i.e., customizable, ad-hoc, and as-needed) reports. On-demand reporting allows personnel to report issues more rapidly to more effectively meet reporting requirements. Collecting log data and aggregating it to present the data in a single, consolidated report achieves this objective. Audit reduction and report generation capabilities do not always reside on the same information system or within the same organizational entities conducting auditing activities. The audit reduction capability can include, for example, modern data mining techniques with advanced data filters to identify anomalous behavior in audit records. The report generation capability provided by the information system can generate customizable reports. Time ordering of audit records can be a significant issue if the granularity of the timestamp in the record is insufficient. This requirement is specific to applications with report generation capabilities; however, applications need to support on-demand audit review and analysis.
SRG-APP-000367
1 Rule
The Mainframe Product must provide a report generation capability that supports on-demand reporting requirements.
Medium Severity
The report generation capability must support on-demand reporting in order to facilitate the organization's ability to generate incident reports as needed to better handle larger-scale or more complex security incidents The report generation capability provided by the application must be capable of generating on-demand (i.e., customizable, ad-hoc, and as-needed) reports. On-demand reporting allows personnel to report issues more rapidly to more effectively meet reporting requirements. Collecting log data and aggregating it to present the data in a single, consolidated report achieves this objective. This requirement is specific to applications with report generation capabilities; however, applications need to support on-demand reporting requirements.
SRG-APP-000368
1 Rule
The Mainframe Product must provide a report generation capability that supports after-the-fact investigations of security incidents.
Medium Severity
If the report generation capability does not support after-the-fact investigations, it is difficult to establish, correlate, and investigate the events leading up to an outage or attack, or identify those responses for one. This capability is also required to comply with applicable Federal laws and DoD policies. The report generation capability must support after-the-fact investigations of security incidents either natively or through the use of third-party tools. This requirement is specific to applications with report generation capabilities; however, applications need to support on-demand reporting requirements.
SRG-APP-000369
1 Rule
The Mainframe Product must provide an audit reduction capability that does not alter original content or time ordering of audit records.
Medium Severity
If the audit reduction capability alters the content or time ordering of audit records, the integrity of the audit records is compromised, and the records are no longer usable for forensic analysis. Time ordering refers to the chronological organization of records based on time stamps. The degree of time stamp precision can affect this. Audit reduction is a process that manipulates collected audit information and organizes such information in a summary format that is more meaningful to analysts. This requirement is specific to applications with audit reduction capabilities; however, applications need to support on-demand audit review and analysis.
SRG-APP-000370
1 Rule
The Mainframe Product must provide a report generation capability that does not alter original content or time ordering of audit records.
Medium Severity
If the audit report generation capability alters the original content or time ordering of audit records, the integrity of the audit records is compromised, and the records are no longer usable for forensic analysis. Time ordering refers to the chronological organization of records based on time stamps. The degree of time stamp precision can affect this. The report generation capability provided by the application can generate customizable reports. This requirement is specific to applications with audit reduction capabilities; however, applications need to support on-demand audit review and analysis.
SRG-APP-000378
1 Rule
The Mainframe product must prohibit user installation of software without explicit privileged status.
Medium Severity
Allowing regular users to install software, without explicit privileges, creates the risk that untested or potentially malicious software will be installed on the system. Explicit privileges (escalated or administrative privileges) provide the regular user with explicit capabilities and control that exceeds the rights of a regular user. Application functionality will vary, and while users are not permitted to install unapproved applications, there may be instances where the organization allows the user to install approved software packages, such as from an approved software repository. The application must enforce software installation by users based on what types of software installations are permitted (e.g., updates and security patches to existing software) and what types of installations are prohibited (e.g., software whose pedigree with regard to being potentially malicious is unknown or suspect) by the organization. This requirement applies, for example, to applications that provide the ability to extend application functionality (e.g., plug-ins, add-ons) and software management applications.
SRG-APP-000379
1 Rule
The Mainframe Product must implement organization-defined automated security responses if baseline configurations are changed in an unauthorized manner.
Medium Severity
Unauthorized changes to the baseline configuration could make the system vulnerable to various attacks or allow unauthorized access to the system. Changes to information system configurations can have unintended side effects, some of which may be relevant to security. Detecting such changes and providing an automated response can help avoid unintended, negative consequences that could ultimately affect the security state of the application. Examples of security responses include, but are not limited to, the following: halting application processing; halting selected application functions; or issuing alerts/notifications to organizational personnel when there is an unauthorized modification of a configuration item.
SRG-APP-000380
1 Rule
The Mainframe Product must enforce access restrictions associated with changes to application configuration.
Medium Severity
Failure to provide logical access restrictions associated with changes to application configuration may have significant effects on the overall security of the system. When dealing with access restrictions pertaining to change control, it should be noted that any changes to the hardware, software, and/or firmware components of the information system and/or application can potentially have significant effects on the overall security of the system. Accordingly, only qualified and authorized individuals should be allowed to obtain access to application components for the purposes of initiating changes, including upgrades and modifications. Logical access restrictions include, for example, controls that restrict access to workflow automation, media libraries, abstract layers (e.g., changes implemented into third-party interfaces rather than directly into information systems), and change windows (e.g., changes occur only during specified times, making unauthorized changes easy to discover).
SRG-APP-000381
1 Rule
The Mainframe Product must audit the enforcement actions used to restrict access associated with changes to the application.
Medium Severity
Without auditing the enforcement of access restrictions against changes to the application configuration, it will be difficult to identify attempted attacks and an audit trail will not be available for forensic investigation for after-the-fact actions. Enforcement actions are the methods or mechanisms used to prevent unauthorized changes to configuration settings. Enforcement action methods may be as simple as denying access to a file based on the application of file permissions (access restriction). Audit items may consist of lists of actions blocked by access restrictions or changes identified after the fact.
SRG-APP-000391
1 Rule
The Mainframe Product must accept Personal Identity Verification (PIV) credentials.
Medium Severity
The use of PIV credentials facilitates standardization and reduces the risk of unauthorized access. DoD has mandated the use of the CAC to support identity management and personal authentication for systems covered under HSPD 12, as well as a primary component of layered protection for national security systems.
SRG-APP-000392
1 Rule
The Mainframe Product must electronically verify Personal Identity Verification (PIV) credentials.
Medium Severity
The use of PIV credentials facilitates standardization and reduces the risk of unauthorized access. DoD has mandated the use of the CAC to support identity management and personal authentication for systems covered under HSPD 12, as well as a primary component of layered protection for national security systems.
SRG-APP-000400
1 Rule
The Mainframe Product must prohibit the use of cached authenticators after one hour.
Medium Severity
If cached authentication information is out of date, the validity of the authentication information may be questionable.
SRG-APP-000402
1 Rule
The Mainframe Product must accept Personal Identity Verification (PIV) credentials from other federal agencies.
Medium Severity
Access may be denied to authorized users if federal agency PIV credentials are not accepted. PIV credentials are those credentials issued by federal agencies that conform to FIPS Publication 201 and supporting guidance documents. OMB Memorandum 11-11 requires federal agencies to continue implementing the requirements specified in HSPD-12 to enable agency-wide use of PIV credentials.
SRG-APP-000403
1 Rule
The Mainframe Product must electronically verify Personal Identity Verification (PIV) credentials from other federal agencies.
Medium Severity
Inappropriate access may be granted to unauthorized users if federal agency PIV credentials are not electronically verified. PIV credentials are those credentials issued by federal agencies that conform to FIPS Publication 201 and supporting guidance documents. OMB Memorandum 11-11 requires federal agencies to continue implementing the requirements specified in HSPD-12 to enable agency-wide use of PIV credentials.
SRG-APP-000404
1 Rule
The Mainframe Product must accept Federal Identity, Credential, and Access Management (FICAM)-approved third-party credentials.
Medium Severity
Access may be denied to legitimate users if FICAM-approved third-party credentials are not accepted. This requirement typically applies to organizational information systems that are accessible to nonfederal government agencies and other partners. This allows federal government relying parties to trust such credentials at their approved assurance levels. Third-party credentials are those credentials issued by nonfederal government entities approved by the FICAM Trust Framework Solutions initiative.
SRG-APP-000405
1 Rule
The Mainframe Product must conform to Federal Identity, Credential, and Access Management (FICAM)-issued profiles.
Medium Severity
Without conforming to FICAM-issued profiles, the information system may not be interoperable with FICAM-authentication protocols, such as SAML 2.0 and OpenID 2.0. This requirement addresses open identity management standards.
SRG-APP-000409
1 Rule
Mainframe Products must audit nonlocal maintenance and diagnostic sessions audit events as defined in site security plan.
Medium Severity
If events associated with nonlocal administrative access or diagnostic sessions are not logged and audited, a major tool for assessing and investigating attacks would not be available. This requirement addresses auditing-related issues associated with maintenance tools used specifically for diagnostic and repair actions on organizational information systems. This requirement applies to hardware/software diagnostic test equipment or tools. This requirement does not cover hardware/software components that may support information system maintenance, yet are a part of the system (e.g., the software implementing "ping," "ls," "ipconfig," or the hardware and software implementing the monitoring port of an Ethernet switch).
SRG-APP-000411
1 Rule
Mainframe Products must implement cryptographic mechanisms to protect the integrity of nonlocal maintenance and diagnostic communications.
Medium Severity
Privileged access contains control and configuration information which is particularly sensitive, so additional protections are necessary. This is maintained by using cryptographic mechanisms to protect integrity. Nonlocal maintenance and diagnostic activities are those activities conducted by individuals communicating through a network, either an external network (e.g., the Internet) or an internal network. Local maintenance and diagnostic activities are those activities carried out by individuals physically present at the information system or information system component and not communicating across a network connection. This requirement applies to hardware/software diagnostic test equipment or tools. This requirement does not cover hardware/software components that may support information system maintenance, yet are a part of the system (e.g., the software implementing "ping," "ls," "ipconfig," or the hardware and software implementing the monitoring port of an Ethernet switch). The application can meet this requirement through leveraging a cryptographic module.
SRG-APP-000412
1 Rule
Mainframe Products must implement cryptographic mechanisms to protect the confidentiality of nonlocal maintenance and diagnostic communications.
Medium Severity
Privileged access contains control and configuration information which is particularly sensitive, so additional protections are necessary. This is maintained by using cryptographic mechanisms to protect confidentiality. Nonlocal maintenance and diagnostic activities are those activities conducted by individuals communicating through a network, either an external network (e.g., the Internet) or an internal network. Local maintenance and diagnostic activities are those activities carried out by individuals physically present at the information system or information system component and not communicating across a network connection. The application can meet this requirement through leveraging a cryptographic module.
SRG-APP-000413
1 Rule
Mainframe Products must verify remote disconnection at the termination of nonlocal maintenance and diagnostic sessions.
Medium Severity
If the remote connection is not closed and verified as closed, the session may remain open and be exploited by an attacker; this is referred to as a zombie session. Remote connections must be disconnected and verified as disconnected when nonlocal maintenance sessions have been terminated and are no longer available for use.
SRG-APP-000414
1 Rule
The Mainframe Product must implement privileged access authorization to all information systems and infrastructure components for selected vulnerability scanning activities as defined in the site security plan.
Medium Severity
In certain situations, the nature of the vulnerability scanning may be more intrusive, or the information system component that is the subject of the scanning may contain highly sensitive information. Privileged access authorization to selected system components facilitates more thorough vulnerability scanning and also protects the sensitive nature of such scanning. The vulnerability scanning application must use privileged access authorization for the scanning account.
SRG-APP-000428
1 Rule
The Mainframe Product must implement cryptographic mechanisms to prevent unauthorized modification of all information not cleared for public release at rest on system components outside of organization facilities.
High Severity
Applications handling data requiring "data at rest" protections must employ cryptographic mechanisms to prevent unauthorized disclosure and modification of the information at rest. Selection of a cryptographic mechanism is based on the need to protect the integrity of organizational information. The strength of the mechanism is commensurate with the security category and/or classification of the information. Organizations have the flexibility to either encrypt all information on storage devices (i.e., full disk encryption) or encrypt specific data structures (e.g., files, records, or fields).
SRG-APP-000429
1 Rule
The Mainframe Product must implement cryptographic mechanisms to prevent unauthorized disclosure of all information not cleared for public release at rest on system components outside of organization facilities.
High Severity
Applications handling data requiring "data at rest" protections must employ cryptographic mechanisms to prevent unauthorized disclosure and modification of the information at rest. Selection of a cryptographic mechanism is based on the need to protect the confidentiality of organizational information. The strength of mechanism is commensurate with the security category and/or classification of the information. Organizations have the flexibility to either encrypt all information on storage devices (i.e., full disk encryption) or encrypt specific data structures (e.g., files, records, or fields).
SRG-APP-000431
1 Rule
The Mainframe Product must maintain a separate execution domain for each executing process.
Medium Severity
Applications can maintain separate execution domains for each executing process by assigning each process a separate address space. Each process has a distinct address space so that communication between processes is performed in a manner controlled through the security functions, and one process cannot modify the executing code of another process. Maintaining separate execution domains for executing processes can be achieved, for example, by implementing separate address spaces. An example is a web browser with process isolation that provides tabs that are separate processes using separate address spaces to prevent one tab crashing the entire browser.
SRG-APP-000447
1 Rule
The Mainframe Product must behave in a predictable and documented manner that reflects organizational and system objectives when invalid inputs are received.
Medium Severity
A common vulnerability of applications is unpredictable behavior when invalid inputs are received. This requirement guards against adverse or unintended system behavior caused by invalid inputs, where information system responses to the invalid input may be disruptive or cause the system to fail into an unsafe state. The behavior will be derived from the organizational and system requirements and includes, but is not limited to, notification of the appropriate personnel, creating an audit record, and rejecting invalid input.
SRG-APP-000450
1 Rule
The Mainframe Product must implement security safeguards to protect its memory from unauthorized code execution.
Medium Severity
Some adversaries launch attacks with the intent of executing code in non-executable regions of memory or in memory locations that are prohibited. Security safeguards employed to protect memory include, for example, data execution prevention and address space layout randomization. Data execution prevention safeguards can either be hardware-enforced or software-enforced with hardware providing the greater strength of mechanism. Examples of attacks are buffer overflow attacks.
SRG-APP-000454
1 Rule
The Mainframe Product must remove all upgraded/replaced software components that are no longer required for operation after updated versions have been installed.
Medium Severity
Previous versions of software components that are not removed from the information system after updates have been installed may be exploited by adversaries. Some information technology products may remove older versions of software automatically from the information system.
SRG-APP-000456
1 Rule
The Mainframe Product must install security-relevant software updates within the time period directed by an authoritative source (e.g., IAVMs, CTOs, DTMs, and STIGs).
Medium Severity
Security flaws with software applications are discovered daily. Vendors are constantly updating and patching their products to address newly discovered security vulnerabilities. Organizations (including any contractor to the organization) are required to promptly install security-relevant software updates (e.g., patches, service packs, and hot fixes). Flaws discovered during security assessments, continuous monitoring, incident response activities, or information system error handling must also be addressed expeditiously. Organization-defined time periods for updating security-relevant software may vary based on a variety of factors including, for example, the security category of the information system or the criticality of the update (i.e., severity of the vulnerability related to the discovered flaw). This requirement will apply to software patch management solutions that are used to install patches across the enclave and also to applications themselves that are not part of that patch management solution. For example, many browsers today provide the capability to install their own patch software. Patch criticality, as well as system criticality will vary. Therefore, the tactical situations regarding the patch management process will also vary. This means that the time period used must be a configurable parameter. Time frames for application of security-relevant software updates may be dependent upon the Information Assurance Vulnerability Management (IAVM) process. The application will be configured to check for and install security-relevant software updates within an identified time period from the availability of the update. The specific time period will be defined by an authoritative source (e.g., IAVM, CTOs, DTMs, and STIGs).
SRG-APP-000472
1 Rule
The Mainframe Product performing organization-defined security functions must verify correct operation of security functions.
Medium Severity
Without verification, security functions may not operate correctly and this failure may go unnoticed. Security function is defined as the hardware, software, and/or firmware of the information system responsible for enforcing the system security policy and supporting the isolation of code and data on which the protection is based. Security functionality includes, but is not limited to, establishing system accounts, configuring access authorizations (i.e., permissions, privileges), setting events to be audited, and setting intrusion detection parameters. This requirement applies to applications performing security functions and the applications performing security function verification/testing.
SRG-APP-000473
1 Rule
The Mainframe Product must perform verification of the correct operation of security functions upon system startup and/or restart; upon command by a user with privileged access; and/or every 30 days.
Medium Severity
Without verification, security functions may not operate correctly and this failure may go unnoticed. Security function is defined as the hardware, software, and/or firmware of the information system responsible for enforcing the system security policy and supporting the isolation of code and data on which the protection is based. Security functionality includes, but is not limited to, establishing system accounts, configuring access authorizations (i.e., permissions, privileges), setting events to be audited, and setting intrusion detection parameters. Notifications provided by information systems include, for example, electronic alerts to system administrators, messages to local computer consoles, and/or hardware indications, such as lights. This requirement applies to applications performing security functions and the applications performing security function verification/testing.
SRG-APP-000474
1 Rule
The Mainframe Product must either shut down, restart, and/or notify the appropriate personnel when anomalies in the operation of the security functions as defined in site security plan are discovered.
Medium Severity
If anomalies are not acted on, security functions may fail to secure the system. Security function is defined as the hardware, software, and/or firmware of the information system responsible for enforcing the system security policy and supporting the isolation of code and data on which the protection is based. Security functionality includes, but is not limited to, establishing system accounts, configuring access authorizations (i.e., permissions, privileges), setting events to be audited, and setting intrusion detection parameters. Notifications provided by information systems include messages to local computer consoles, and/or hardware indications, such as lights. This requirement applies to applications performing security functions and the applications performing security function verification/testing.
SRG-APP-000475
1 Rule
The Mainframe product must perform an integrity check of all software from vendors/sources that provide cryptographic mechanisms to enable the validation of code authenticity and integrity at startup, at transitional states as defined in site security plan or security-relevant events, or annually.
Medium Severity
Unauthorized changes to software can occur due to errors or malicious activity (e.g., tampering). Software includes, for example, operating systems (with key internal components such as kernels, drivers), middleware, and applications. State-of-the-practice integrity-checking mechanisms (e.g., parity checks, cyclical redundancy checks, cryptographic hashes) and associated tools can automatically monitor the integrity of information systems and hosted applications. Security-relevant events include, for example, the identification of a new threat to which organizational information systems are susceptible and the installation of new hardware, software, or firmware. Transitional states include, for example, system startup, restart, shutdown, and abort. This requirement applies to integrity verification tools that are used to detect unauthorized changes to organization-defined software.
SRG-APP-000477
1 Rule
The Mainframe Product must perform an integrity check of information as defined in site security plan at startup, at transitional states as defined in site security plan or security-relevant events, or annually.
Medium Severity
Unauthorized changes to information can occur due to errors or malicious activity (e.g., tampering). Information includes metadata, such as security attributes associated with information. State-of-the-practice integrity-checking mechanisms (e.g., parity checks, cyclical redundancy checks, cryptographic hashes) and associated tools can automatically monitor the integrity of information systems and hosted applications. Security-relevant events include, for example, the identification of a new threat to which organizational information systems are susceptible and the installation of new hardware, software, or firmware. Transitional states include, for example, system startup, restart, shutdown, and abort. This requirement applies to integrity verification tools that are used to detect unauthorized changes to organization-defined information.
SRG-APP-000480
1 Rule
The Mainframe Product must automatically shut down the information system, restart the information system, and/or implement security safeguards as conditions as defined in site security plan when integrity violations are discovered.
Medium Severity
Unauthorized changes to software, firmware, and information can occur due to errors or malicious activity (e.g., tampering). Information includes metadata, such as security attributes associated with information. State-of-the-practice integrity-checking mechanisms (e.g., parity checks, cyclical redundancy checks, cryptographic hashes) and associated tools can automatically monitor the integrity of information systems and hosted applications. Organizations may define different integrity checking and anomaly responses by type of information (e.g., firmware, software, user data); by specific information (e.g., boot firmware, boot firmware for a specific types of machines); or a combination of both. Automatic implementation of specific safeguards within organizational information systems includes, for example, reversing the changes, halting the information system, restarting the information system, notification to the appropriate personnel or roles, or triggering audit alerts when unauthorized modifications to critical security files occur. This capability must take into account operational requirements for availability for selecting an appropriate response.
SRG-APP-000484
1 Rule
The Mainframe Product must audit detected potential integrity violations.
Medium Severity
Without an audit capability, an integrity violation may not be detected. Organizations select response actions based on types of software, specific software, or information for which there are potential integrity violations. The integrity verification application must have the capability to audit and it must be enabled.
SRG-APP-000485
1 Rule
The Mainframe Product, upon detection of a potential integrity violation, must initiate one or more of the following actions: generate an audit record, alert the current user, alert personnel or roles as defined in the site security plan, and/or perform other actions as defined in the SSP.
Medium Severity
Without an audit capability, an integrity violation may not be detected. Organizations select response actions based on types of software, specific software, or information for which there are potential integrity violations. The integrity verification application must be configured to perform one or more of following actions: generates an audit record; alerts current user; alerts organization-defined personnel or roles. The organization may define additional actions to be taken.
SRG-APP-000488
1 Rule
The Mainframe Product must prompt the user for action prior to executing mobile code.
Medium Severity
Mobile code can cause damage to the system. It can execute without explicit action from, or notification to, a user. Actions enforced before executing mobile code include, for example, prompting users prior to opening email attachments and disabling automatic execution. This requirement applies to mobile code-enabled software, which is capable of executing one or more types of mobile code.
SRG-APP-000492
1 Rule
The Mainframe Product must generate audit records when successful/unsuccessful attempts to access security objects occur.
Medium Severity
Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident, or identify those responsible for one. Audit records can be generated from various components within the information system (e.g., module or policy filter).
SRG-APP-000493
1 Rule
The Mainframe Product must generate audit records when successful/unsuccessful attempts to access security levels occur.
Medium Severity
Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident, or identify those responsible for one. Audit records can be generated from various components within the information system (e.g., module or policy filter).
SRG-APP-000494
1 Rule
The Mainframe Product must generate audit records when successful/unsuccessful attempts to access categories of information (e.g., classification levels) occur.
Medium Severity
Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident, or identify those responsible for one. Audit records can be generated from various components within the information system (e.g., module or policy filter).
SRG-APP-000495
1 Rule
The Mainframe Product must generate audit records when successful/unsuccessful attempts to modify privileges occur.
Medium Severity
Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident, or identify those responsible for one. Audit records can be generated from various components within the information system (e.g., module or policy filter).
SRG-APP-000496
1 Rule
The Mainframe Product must generate audit records when successful/unsuccessful attempts to modify security objects occur.
Medium Severity
Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident, or identify those responsible for one. Audit records can be generated from various components within the information system (e.g., module or policy filter).
SRG-APP-000497
1 Rule
The Mainframe Product must generate audit records when successful/unsuccessful attempts to modify security levels occur.
Medium Severity
Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident, or identify those responsible for one. Audit records can be generated from various components within the information system (e.g., module or policy filter).
SRG-APP-000498
1 Rule
The Mainframe Product must generate audit records when successful/unsuccessful attempts to modify categories of information (e.g., classification levels) occur.
Medium Severity
Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident, or identify those responsible for one. Audit records can be generated from various components within the information system (e.g., module or policy filter).
SRG-APP-000499
1 Rule
The Mainframe Product must generate audit records when successful/unsuccessful attempts to delete privileges occur.
Medium Severity
Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident, or identify those responsible for one. Audit records can be generated from various components within the information system (e.g., module or policy filter).
SRG-APP-000500
1 Rule
The Mainframe Product must generate audit records when successful/unsuccessful attempts to delete security levels occur.
Medium Severity
Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident, or identify those responsible for one. Audit records can be generated from various components within the information system (e.g., module or policy filter).
SRG-APP-000501
1 Rule
The Mainframe Product must generate audit records when successful/unsuccessful attempts to delete security objects occur.
Medium Severity
Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident, or identify those responsible for one. Audit records can be generated from various components within the information system (e.g., module or policy filter).
SRG-APP-000502
1 Rule
The Mainframe Product must generate audit records when successful/unsuccessful attempts to delete categories of information (e.g., classification levels) occur.
Medium Severity
Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident, or identify those responsible for one. Audit records can be generated from various components within the information system (e.g., module or policy filter).
SRG-APP-000503
1 Rule
The Mainframe Product must generate audit records when successful/unsuccessful logon attempts occur.
Medium Severity
Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident, or identify those responsible for one. Audit records can be generated from various components within the information system (e.g., module or policy filter).
SRG-APP-000504
1 Rule
The Mainframe Product must generate audit records for privileged activities or other system-level access.
Medium Severity
Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident, or identify those responsible for one. Audit records can be generated from various components within the information system (e.g., module or policy filter).
SRG-APP-000505
1 Rule
The Mainframe Product must generate audit records showing starting and ending time for user access to the system.
Medium Severity
Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident, or identify those responsible for one. Audit records can be generated from various components within the information system (e.g., module or policy filter).
SRG-APP-000506
1 Rule
The Mainframe Product must generate audit records when concurrent logons from different workstations occur.
Medium Severity
Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident, or identify those responsible for one. Audit records can be generated from various components within the information system (e.g., module or policy filter).
SRG-APP-000507
1 Rule
The Mainframe Product must generate audit records when successful/unsuccessful accesses to objects occur.
Medium Severity
Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident, or identify those responsible for one. Audit records can be generated from various components within the information system (e.g., module or policy filter).
SRG-APP-000508
1 Rule
The Mainframe Product must generate audit records for all direct access to the information system.
Medium Severity
Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident, or identify those responsible for one. Audit records can be generated from various components within the information system (e.g., module or policy filter).
SRG-APP-000509
1 Rule
The Mainframe Product must generate audit records for all account creations, modifications, disabling, and termination events.
Medium Severity
Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident, or identify those responsible for one. Audit records can be generated from various components within the information system (e.g., module or policy filter).
SRG-APP-000510
1 Rule
The Mainframe Product must generate audit records for all kernel module load, unload, and restart events, and for all program initiations.
Medium Severity
Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an incident, or identify those responsible for one. Audit records can be generated from various components within the information system (e.g., module or policy filter).
SRG-APP-000514
1 Rule
The Mainframe Product must implement NIST FIPS-validated cryptography to provision digital signatures in accordance with applicable federal laws, Executive orders, directives, policies, regulations, and standards.
Medium Severity
Use of weak or untested encryption algorithms undermines the purposes of using encryption to protect data. The application must implement cryptographic modules adhering to the higher standards approved by the federal government since this provides assurance they have been tested and validated. For detailed information, refer to NIST FIPS Publication 140-2, Security Requirements For Cryptographic Modules. Note that the product's cryptographic modules must be validated and certified by NIST as FIPS compliant.
SRG-APP-000514
1 Rule
The Mainframe Product must implement NIST FIPS-validated cryptography to generate and validate cryptographic hashes in accordance with applicable federal laws, Executive orders, directives, policies, regulations, and standards.
Medium Severity
Use of weak or untested encryption algorithms undermines the purposes of using encryption to protect data. The application must implement cryptographic modules adhering to the higher standards approved by the federal government since this provides assurance they have been tested and validated.
SRG-APP-000514
1 Rule
The Mainframe Product must implement NIST FIPS-validated cryptography to protect unclassified information requiring confidentiality and cryptographic protection in accordance with applicable federal laws, Executive orders, directives, policies, regulations, and standards.
Medium Severity
Use of weak or untested encryption algorithms undermines the purposes of using encryption to protect data. The application must implement cryptographic modules adhering to the higher standards approved by the federal government since this provides assurance they have been tested and validated.
SRG-APP-000516
1 Rule
The Mainframe Product must be configured in accordance with the security configuration settings based on DoD security configuration or implementation guidance, including STIGs, NSA configuration guides, CTOs, and DTMs.
Medium Severity
Configuring the application to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security baseline across DoD that reflects the most restrictive security posture consistent with operational requirements. Configuration settings are the set of parameters that can be changed that affect the security posture and/or functionality of the system. Security-related parameters are those parameters impacting the security state of the application, including the parameters required to satisfy other security control requirements.
SRG-APP-000516
1 Rule
The Mainframe Product must provide the capability for authorized users to select a user session to capture/record or view/hear.
Medium Severity
Without the capability to select a user session to capture/record or view/hear, investigations into suspicious or harmful events would be hampered by the volume of information captured. The volume of information captured may also adversely impact the operation for the network. Session audits may include monitoring keystrokes, tracking websites visited, and recording information and/or file transfers.
SRG-APP-000516
1 Rule
The Mainframe Product must provide the capability for authorized users to remotely view/hear, in real time, all content related to an established user session from a component separate from the Mainframe Product being monitored.
Medium Severity
Without the capability to remotely view/hear all content related to a user session, investigations into suspicious user activity would be hampered. Real-time monitoring allows authorized personnel to take action before additional damage is done. The ability to observe user sessions as they are happening allows for interceding in ongoing events that after-the-fact review of captured content would not allow. This requirement does not apply to applications that do not have a concept of a user session (e.g., calculator).
SRG-APP-000416
1 Rule
The Mainframe Product must implement NSA-approved cryptography to protect classified information in accordance with applicable federal laws, Executive orders, directives, policies, regulations, and standards.
Medium Severity
Use of weak or untested encryption algorithms undermines the purposes of using encryption to protect data. The application must implement cryptographic modules adhering to the higher standards approved by the federal government since this provides assurance they have been tested and validated.
SRG-APP-000700
1 Rule
The Mainframe Product must disable accounts when the accounts have expired.
Medium Severity
Disabling expired, inactive, or otherwise anomalous accounts supports the concepts of least privilege and least functionality which reduce the attack surface of the system.
SRG-APP-000705
1 Rule
The Mainframe Product must disable accounts when the accounts are no longer associated to a user.
Medium Severity
Disabling expired, inactive, or otherwise anomalous accounts supports the concepts of least privilege and least functionality, which reduce the attack surface of the system.
SRG-APP-000745
1 Rule
The Mainframe Product must implement the capability to centrally review and analyze audit records from multiple components within the system.
Medium Severity
Automated mechanisms for centralized reviews and analyses include Security Information and Event Management products.
SRG-APP-000795
1 Rule
The Mainframe Product must alert organization-defined personnel or roles upon detection of unauthorized access, modification, or deletion of audit information.
Medium Severity
Audit information includes all information needed to successfully audit system activity, such as audit records, audit log settings, audit reports, and personally identifiable information. Audit logging tools are those programs and devices used to conduct system audit and logging activities. Protection of audit information focuses on technical protection and limits the ability to access and execute audit logging tools to authorized individuals. Physical protection of audit information is addressed by both media protection controls and physical and environmental protection controls.
SRG-APP-000820
1 Rule
The Mainframe Product must implement multifactor authentication for local; network; and/or remote access to privileged accounts; and/or nonprivileged accounts such that one of the factors is provided by a device separate from the system gaining access.
Medium Severity
The purpose of requiring a device that is separate from the system to which the user is attempting to gain access for one of the factors during multifactor authentication is to reduce the likelihood of compromising authenticators or credentials stored on the system. Adversaries may be able to compromise such authenticators or credentials and subsequently impersonate authorized users. Implementing one of the factors on a separate device (e.g., a hardware token), provides a greater strength of mechanism and an increased level of assurance in the authentication process.
SRG-APP-000825
1 Rule
The Mainframe Product must implement multifactor authentication for local; network; and/or remote access to privileged accounts; and/or nonprivileged accounts such that the device meets organization-defined strength of mechanism requirements.
Medium Severity
The purpose of requiring a device that is separate from the system to which the user is attempting to gain access for one of the factors during multifactor authentication is to reduce the likelihood of compromising authenticators or credentials stored on the system. Adversaries may be able to compromise such authenticators or credentials and subsequently impersonate authorized users. Implementing one of the factors on a separate device (e.g., a hardware token), provides a greater strength of mechanism and an increased level of assurance in the authentication process.
SRG-APP-000830
1 Rule
The Mainframe Product must, for password-based authentication, maintain a list of commonly used, expected, or compromised passwords on an organization-defined frequency.
Medium Severity
Password-based authentication applies to passwords regardless of whether they are used in single-factor or multifactor authentication. Long passwords or passphrases are preferable over shorter passwords. Enforced composition rules provide marginal security benefits while decreasing usability. However, organizations may choose to establish certain rules for password generation (e.g., minimum character length for long passwords) under certain circumstances and can enforce this requirement in IA-5(1)(h). Account recovery can occur, for example, in situations when a password is forgotten. Cryptographically protected passwords include salted one-way cryptographic hashes of passwords. The list of commonly used, compromised, or expected passwords includes passwords obtained from previous breach corpuses, dictionary words, and repetitive or sequential characters. The list includes context-specific words, such as the name of the service, username, and derivatives thereof.
SRG-APP-000835
1 Rule
The Mainframe Product must, for password-based authentication, update the list of passwords on an organization-defined frequency.
Medium Severity
Password-based authentication applies to passwords regardless of whether they are used in single-factor or multifactor authentication. Long passwords or passphrases are preferable over shorter passwords. Enforced composition rules provide marginal security benefits while decreasing usability. However, organizations may choose to establish certain rules for password generation (e.g., minimum character length for long passwords) under certain circumstances and can enforce this requirement in IA-5(1)(h). Account recovery can occur, for example, in situations when a password is forgotten. Cryptographically protected passwords include salted one-way cryptographic hashes of passwords. The list of commonly used, compromised, or expected passwords includes passwords obtained from previous breach corpuses, dictionary words, and repetitive or sequential characters. The list includes context-specific words, such as the name of the service, username, and derivatives thereof.
SRG-APP-000840
1 Rule
The Mainframe Product must, for password-based authentication, update the list of passwords when organizational passwords are suspected to have been compromised directly or indirectly.
Medium Severity
Password-based authentication applies to passwords regardless of whether they are used in single-factor or multifactor authentication. Long passwords or passphrases are preferable over shorter passwords. Enforced composition rules provide marginal security benefits while decreasing usability. However, organizations may choose to establish certain rules for password generation (e.g., minimum character length for long passwords) under certain circumstances and can enforce this requirement in IA-5(1)(h). Account recovery can occur, for example, in situations when a password is forgotten. Cryptographically protected passwords include salted one-way cryptographic hashes of passwords. The list of commonly used, compromised, or expected passwords includes passwords obtained from previous breach corpuses, dictionary words, and repetitive or sequential characters. The list includes context-specific words, such as the name of the service, username, and derivatives thereof.
SRG-APP-000845
1 Rule
The Mainframe Product must, for password-based authentication, verify when users create or update passwords, that the passwords are not found on the list of commonly-used, expected, or compromised passwords in IA-5 (1) (a).
Medium Severity
Password-based authentication applies to passwords regardless of whether they are used in single-factor or multifactor authentication. Long passwords or passphrases are preferable over shorter passwords. Enforced composition rules provide marginal security benefits while decreasing usability. However, organizations may choose to establish certain rules for password generation (e.g., minimum character length for long passwords) under certain circumstances and can enforce this requirement in IA-5(1)(h). Account recovery can occur, for example, in situations when a password is forgotten. Cryptographically protected passwords include salted one-way cryptographic hashes of passwords. The list of commonly used, compromised, or expected passwords includes passwords obtained from previous breach corpuses, dictionary words, and repetitive or sequential characters. The list includes context-specific words, such as the name of the service, username, and derivatives thereof.
SRG-APP-000855
1 Rule
The Mainframe Product must, for password-based authentication, require immediate selection of a new password upon account recovery.
Medium Severity
Password-based authentication applies to passwords regardless of whether they are used in single-factor or multifactor authentication. Long passwords or passphrases are preferable over shorter passwords. Enforced composition rules provide marginal security benefits while decreasing usability. However, organizations may choose to establish certain rules for password generation (e.g., minimum character length for long passwords) under certain circumstances and can enforce this requirement in IA-5(1)(h). Account recovery can occur, for example, in situations when a password is forgotten. Cryptographically protected passwords include salted one-way cryptographic hashes of passwords. The list of commonly used, compromised, or expected passwords includes passwords obtained from previous breach corpuses, dictionary words, and repetitive or sequential characters. The list includes context-specific words, such as the name of the service, username, and derivatives thereof.
SRG-APP-000860
1 Rule
The Mainframe Product must, for password-based authentication, allow user selection of long passwords and passphrases, including spaces and all printable characters.
Medium Severity
Password-based authentication applies to passwords regardless of whether they are used in single-factor or multifactor authentication. Long passwords or passphrases are preferable over shorter passwords. Enforced composition rules provide marginal security benefits while decreasing usability. However, organizations may choose to establish certain rules for password generation (e.g., minimum character length for long passwords) under certain circumstances and can enforce this requirement in IA-5(1)(h). Account recovery can occur, for example, in situations when a password is forgotten. Cryptographically protected passwords include salted one-way cryptographic hashes of passwords. The list of commonly used, compromised, or expected passwords includes passwords obtained from previous breach corpuses, dictionary words, and repetitive or sequential characters. The list includes context-specific words, such as the name of the service, username, and derivatives thereof.
SRG-APP-000865
1 Rule
The Mainframe Product must, for password-based authentication, employ automated tools to assist the user in selecting strong password authenticators.
Medium Severity
Password-based authentication applies to passwords regardless of whether they are used in single-factor or multifactor authentication. Long passwords or passphrases are preferable over shorter passwords. Enforced composition rules provide marginal security benefits while decreasing usability. However, organizations may choose to establish certain rules for password generation (e.g., minimum character length for long passwords) under certain circumstances and can enforce this requirement in IA-5(1)(h). Account recovery can occur, for example, in situations when a password is forgotten. Cryptographically protected passwords include salted one-way cryptographic hashes of passwords. The list of commonly used, compromised, or expected passwords includes passwords obtained from previous breach corpuses, dictionary words, and repetitive or sequential characters. The list includes context-specific words, such as the name of the service, username, and derivatives thereof.
SRG-APP-000875
1 Rule
The Mainframe Product must for public key-based authentication, implement a local cache of revocation data to support path discovery and validation.
Medium Severity
Public key cryptography is a valid authentication mechanism for individuals, machines, and devices. For PKI solutions, status information for certification paths includes certificate revocation lists or certificate status protocol responses. For PIV cards, certificate validation involves the construction and verification of a certification path to the Common Policy Root trust anchor, which includes certificate policy processing. Implementing a local cache of revocation data to support path discovery and validation also supports system availability in situations where organizations are unable to access revocation information via the network.
SRG-APP-000880
1 Rule
The Mainframe Product must protect nonlocal maintenance sessions by separating the maintenance session from other network sessions with the system by logically separated communications paths.
Medium Severity
Nonlocal maintenance and diagnostic activities are conducted by individuals who communicate through either an external or internal network. Communications paths can be logically separated using encryption.
SRG-APP-000910
1 Rule
The Mainframe Product must include only approved trust anchors in trust stores or certificate stores managed by the organization.
Medium Severity
Public key infrastructure (PKI) certificates are certificates with visibility external to organizational systems and certificates related to the internal operations of systems, such as application-specific time services. In cryptographic systems with a hierarchical structure, a trust anchor is an authoritative source (i.e., a certificate authority) for which trust is assumed and not derived. A root certificate for a PKI system is an example of a trust anchor. A trust store or certificate store maintains a list of trusted root certificates.
SRG-APP-000915
1 Rule
The Mainframe Product must provide protected storage for cryptographic keys with organization-defined safeguards and/or hardware protected key store.
Medium Severity
A Trusted Platform Module (TPM) is an example of a hardware-protected data store that can be used to protect cryptographic keys.
SRG-APP-000920
1 Rule
The Mainframe Product must synchronize system clocks within and between systems or system components.
Medium Severity
Time synchronization of system clocks is essential for the correct execution of many system services, including identification and authentication processes that involve certificates and time-of-day restrictions as part of access control. Denial of service or failure to deny expired credentials may result without properly synchronized clocks within and between systems and system components. Time is commonly expressed in Coordinated Universal Time (UTC), a modern continuation of Greenwich Mean Time (GMT), or local time with an offset from UTC. The granularity of time measurements refers to the degree of synchronization between system clocks and reference clocks, such as clocks synchronizing within hundreds of milliseconds or tens of milliseconds. Organizations may define different time granularities for system components. Time service can be critical to other security capabilities such as access control and identification and authentication depending on the nature of the mechanisms used to support the capabilities.
SRG-APP-000925
1 Rule
The Mainframe Product must compare the internal system clocks on an organization-defined frequency with organization-defined authoritative time source.
Medium Severity
Synchronization of internal system clocks with an authoritative source provides uniformity of time stamps for systems with multiple system clocks and systems connected over a network.