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XCCDF
Redis Enterprise 6.x Security Technical Implementation Guide
Redis Enterprise 6.x Security Technical Implementation Guide
An XCCDF Benchmark
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71 rules organized in 71 groups
SRG-APP-000023-DB-000001
1 Rule
Redis Enterprise DBMS must integrate with an organization-level authentication/access mechanism providing account management and automation for all users, groups, roles, and any other principals.
High Severity
Enterprise environments make account management for applications and databases challenging and complex. A manual process for account management functions adds the risk of a potential oversight or other error. Managing accounts for the same person in multiple places is inefficient and prone to problems with consistency and synchronization. A comprehensive application account management process that includes automation helps to ensure that accounts designated as requiring attention are consistently and promptly addressed. Examples include, but are not limited to, using automation to act on multiple accounts designated as inactive, suspended, or terminated, or by disabling accounts located in non-centralized account stores, such as multiple servers. Account management functions can also 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 notify account managers when users are terminated or transferred; using the information system to monitor account usage; and using automated telephone notification to report atypical system account usage. The DBMS must be configured to automatically use organization-level account management functions, and these functions must immediately enforce the organization's current account policy. Automation may be comprised of differing technologies that when placed together contain an overall mechanism supporting an organization's automated account management requirements.
SRG-APP-000033-DB-000084
1 Rule
Redis Enterprise DBMS must enforce approved authorizations for logical access to information and system resources in accordance with applicable access control policies.
High Severity
Authentication with a DoD-approved PKI certificate does not necessarily imply authorization to access the DBMS. To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems, including databases, must be properly configured to implement access control policies. 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, a category that includes database management systems. If the DBMS does not follow applicable policy when approving access, it may be in conflict with networks or other applications in the information system. This may result in users either gaining or being denied access inappropriately and in conflict with applicable policy.
SRG-APP-000328-DB-000301
1 Rule
Redis Enterprise DBMS must enforce discretionary access control policies, as defined by the data owner, 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 table 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-000328-DB-000301
1 Rule
Redis Enterprise DBMS must enforce access control lists, as defined by the data owner, 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 table 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-DB-000304
1 Rule
Redis Enterprise DBMS 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. System documentation should include a definition of the functionality considered privileged. Depending on circumstances, privileged functions can 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. A privileged function in the DBMS/database context is any operation that modifies the structure of the database, its built-in logic, or its security settings. This would include all Data Definition Language (DDL) statements and all security-related statements. In an SQL environment, it encompasses, but is not necessarily limited to: CREATE ALTER DROP GRANT REVOKE DENY There may also be Data Manipulation Language (DML) statements that, subject to context, should be regarded as privileged. Possible examples include: TRUNCATE TABLE; DELETE, or DELETE affecting more than n rows, for some n, or DELETE without a WHERE clause; UPDATE or UPDATE affecting more than n rows, for some n, or UPDATE without a WHERE clause; any SELECT, INSERT, UPDATE, or DELETE to an application-defined security table executed by other than a security principal. Depending on the capabilities of the DBMS and the design of the database and associated applications, the prevention of unauthorized use of privileged functions may be achieved by means of DBMS security features, database triggers, other mechanisms, or a combination of these. Redis Enterprise comes with a configurable role-based access control mechanism that allows users to be given specific roles. These roles provide various levels of permissions to security safeguards and countermeasures.
SRG-APP-000342-DB-000302
1 Rule
Execution of software modules (to include stored procedures, functions, and triggers) with elevated privileges must be restricted to necessary cases only.
Medium Severity
In certain situations, to provide required functionality, a DBMS needs to execute internal logic (stored procedures, functions, triggers, etc.) and/or external code modules with elevated privileges. However, if the privileges required for execution are at a higher level than the privileges assigned to organizational users invoking the functionality applications/programs, those users are indirectly provided with greater privileges than assigned by organizations. Privilege elevation must be used only where necessary and protected from misuse. This calls for inspection of application source code, which will require collaboration with the application developers. It is recognized that in many cases, the database administrator (DBA) is organizationally separate from the application developers, and may have limited, if any, access to source code. Nevertheless, protections of this type are so important to the secure operation of databases that they must not be ignored. At a minimum, the DBA must attempt to obtain assurances from the development organization that this issue has been addressed and must document what has been discovered. Redis Enterprise comes with the ability to run Redis Enterprise software modules within each database to extend the database functionality.
SRG-APP-000089-DB-000064
1 Rule
Redis Enterprise DBMS must provide audit record generation capability for DoD-defined auditable events within all DBMS/database 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 DBMS (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 DBMS 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 login attempts, privileged activities, or other system-level access, starting and ending time for user access to the system, concurrent logins 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. Organizations may define additional events requiring continuous or ad hoc auditing.
SRG-APP-000090-DB-000065
1 Rule
Redis Enterprise DBMS must allow only the 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 or interfere with the auditing of critical events. Suppression of auditing could permit an adversary to evade detection. Misconfigured audits can 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.
SRG-APP-000508-DB-000358
1 Rule
Redis Enterprise DBMS must generate audit records for all direct access to the database(s).
Medium Severity
In this context, direct access is any query, command, or call to the DBMS that comes from any source other than the application(s) that it supports. Examples would be the command line or a database management utility program. The intent is to capture all activity from administrative and non-standard sources.
SRG-APP-000357-DB-000316
1 Rule
Redis Enterprise DBMS must allocate audit record storage capacity in accordance with organization-defined audit record storage requirements.
Medium Severity
To ensure sufficient storage capacity for the audit logs, the DBMS must be able to allocate audit record storage capacity. Although another requirement (SRG-APP-000515-DB-000318) mandates that audit data be offloaded to a centralized log management system, it remains necessary to provide space on the database server to serve as a buffer against outages and capacity limits of the offloading mechanism. The task of allocating audit record storage capacity is usually performed during initial installation of the DBMS 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. In determining the capacity requirements, consider such factors as: total number of users; expected number of concurrent users during busy periods; number and type of events being monitored; types and amounts of data being captured; the frequency/speed with which audit records are offloaded to the central log management system; and any limitations that exist on the DBMS's ability to reuse the space formerly occupied by offloaded records.
SRG-APP-000515-DB-000318
1 Rule
Redis Enterprise DBMS must offload audit data to a separate log management facility; this must be continuous and in near real time for systems with a network connection to the storage facility, and weekly or more often for stand-alone systems.
Medium Severity
Information stored in one location is vulnerable to accidental or incidental deletion or alteration. Offloading is a common process in information systems with limited audit storage capacity. The DBMS may write audit records to database tables, to files in the file system, to other kinds of local repository, or directly to a centralized log management system. Whatever the method used, it must be compatible with offloading the records to the centralized system. For more information, refer to: https://docs.redislabs.com/latest/rs/administering/logging/rsyslog-logging/ and https://redislabs.com/blog/sending-redis-cluster-alerts-to-slack-with-syslog/
SRG-APP-000359-DB-000319
1 Rule
Redis Enterprise DBMS must provide a warning to appropriate support staff when allocated audit record storage volume reaches 75 percent of maximum audit record storage capacity.
Medium Severity
Organizations are required to use a central log management system, so under normal conditions, the audit space allocated to the DBMS on its own server will not be an issue. However, space will still be required on the DBMS server for audit records in transit, and, under abnormal conditions, this could fill up. Since a requirement exists to halt processing upon audit failure, a service outage would result. If support personnel are not notified immediately upon storage volume utilization reaching 75 percent, they are unable to plan for storage capacity expansion. The appropriate support staff include, at a minimum, the ISSO and the DBA/SA.
SRG-APP-000360-DB-000320
1 Rule
Redis Enterprise DBMS must provide an immediate real-time alert to appropriate support staff of all audit log failures.
Medium Severity
Redis Enterprise does not send immediate real-time alerts to support staff in the event of audit log failures; however, the host RHEL server can be configured to send such alerts using scripts or other third-party tools. 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. The appropriate support staff include, at a minimum, the ISSO and the DBA/SA. A failure of database auditing will result in either the database continuing to function without auditing or in a complete halt to database operations. When audit processing fails, appropriate personnel must be alerted immediately to avoid further downtime or unaudited transactions. 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-000109-DB-000049
1 Rule
Redis Enterprise DBMS must by default shut down upon audit failure, to include the unavailability of space for more audit log records; or must be configurable to shut down upon audit failure.
Medium Severity
Redis Enterprise can be configured to generate alerts for certain other key events, but not in the instance of an audit failure. The DBMS would depend on the base Linux OS to detect and shut down in the event of an audit processing failure. It is critical that when the DBMS is at risk of failing to process audit logs as required, it take action to mitigate the failure. Audit processing failures include software/hardware errors; failures in the audit capturing mechanisms; and audit storage capacity being reached or exceeded. Responses to audit failure depend upon the nature of the failure mode. When the need for system availability does not outweigh the need for a complete audit trail, the DBMS should shut down immediately, rolling back all in-flight transactions. Systems where audit trail completeness is paramount will most likely be at a lower MAC level than MAC I; the final determination is the prerogative of the application owner, subject to Authorizing Official concurrence. In any case, sufficient auditing resources must be allocated to avoid a shutdown in all but the most extreme situations.
SRG-APP-000109-DB-000321
1 Rule
Redis Enterprise DBMS must be configurable to overwrite audit log records, oldest first (First-In-First-Out [FIFO]), in the event of unavailability of space for more audit log records.
Medium Severity
It is critical that when the DBMS is at risk of failing to process audit logs as required, it take action to mitigate the failure. Audit processing failures include software/hardware errors; failures in the audit capturing mechanisms; and audit storage capacity being reached or exceeded. Responses to audit failure depend upon the nature of the failure mode. When availability is an overriding concern, approved actions in response to an audit failure are as follows: (i) If the failure was caused by the lack of audit record storage capacity, the DBMS must continue generating audit records, if possible (automatically restarting the audit service if necessary), overwriting the oldest audit records in a first-in-first-out manner. (ii) If audit records are sent to a centralized collection server and communication with this server is lost or the server fails, the DBMS must queue audit records locally until communication is restored or until the audit records are retrieved manually. Upon restoration of the connection to the centralized collection server, action should be taken to synchronize the local audit data with the collection server. Systems where availability is paramount will most likely be MAC I; the final determination is the prerogative of the application owner, subject to Authorizing Official concurrence. In any case, sufficient auditing resources must be allocated to avoid audit data loss in all but the most extreme situations.
SRG-APP-000374-DB-000322
1 Rule
Redis Enterprise DBMS must record time stamps, in audit records and application data, that can be mapped to Coordinated Universal Time (UTC, formerly GMT).
Medium Severity
If time stamps are not consistently applied and there is no common time reference, it is difficult to perform forensic analysis. Time stamps generated by the DBMS must include date and time. 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. Some DBMS products offer a data type called TIMESTAMP that is not a representation of date and time. Rather, it is a database state counter and does not correspond to calendar and clock time. This requirement does not refer to that meaning of TIMESTAMP. Redis Enterprise application components allow the setting of a UTC timestamp associated with the logs of the database.
SRG-APP-000118-DB-000059
1 Rule
The audit information produced by Redis Enterprise DBMS must be protected from unauthorized read access.
Medium Severity
If audit data were to become compromised, competent forensic analysis and discovery of the true source of potentially malicious system activity would be 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, copy, etc. This requirement can be achieved through multiple methods which will depend upon system architecture and design. Some commonly employed methods include ensuring log files enjoy the proper file system permissions, utilizing file system protections, and limiting log data location. 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 that 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-DB-000060
1 Rule
The audit information produced by Redis Enterprise DBMS must be protected from unauthorized modification.
Medium Severity
If audit data were to become compromised, competent forensic analysis and discovery of the true source of potentially malicious system activity would be 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 that will depend upon system architecture and design. Some commonly employed methods include ensuring log files enjoy 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 user rights 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. Modification of database audit data could mask the theft of, or the unauthorized modification of, sensitive data stored in the database.
SRG-APP-000120-DB-000061
1 Rule
The audit information produced by Redis Enterprise DBMS must be protected from unauthorized deletion.
Medium Severity
If audit data were to become compromised, competent forensic analysis and discovery of the true source of potentially malicious system activity would be 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 enjoy the proper file system permissions utilizing 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. Deletion of database audit data could mask the theft of, or the unauthorized modification of, sensitive data stored in the database.
SRG-APP-000121-DB-000202
1 Rule
Redis Enterprise DBMS must protect its audit features from unauthorized access.
Medium Severity
Redis Enterprise does not come with unique tools to view log data and logging is not configurable. Logs are stored in a standard log file on the host operating system that is accessible using standard Linux tooling. Only users in the admin role can view or modify privileged settings in the Redis Enterprise UI. Protecting audit data also includes identifying and protecting the tools used to view and manipulate log data. Depending upon the log format and application, system and application log tools may provide the only means to manipulate and manage application and system log data. It is, therefore, imperative that access to audit tools be controlled and protected from unauthorized access. 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, OS-provided audit tools, vendor-provided audit tools, and open-source audit tools needed to successfully view and manipulate audit information system activity and records. If an attacker were to gain access to audit tools, they could analyze audit logs for system weaknesses or weaknesses in the auditing itself. An attacker could also manipulate logs to hide evidence of malicious activity.
SRG-APP-000122-DB-000203
1 Rule
Redis Enterprise DBMS must protect its audit configuration from unauthorized modification.
Medium Severity
Redis Enterprise does not come with unique tools to view log data and logging is not configurable. Logs are stored in a standard log file on the host operating system that is accessible using standard Linux tooling. Only users in the admin role can view or modify privileged settings in the Redis Enterprise UI. 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-DB-000204
1 Rule
Redis Enterprise DBMS must protect its audit features from unauthorized removal.
Medium Severity
Redis Enterprise does not come with unique tools to view log data and logging is not configurable. Logs are stored in a standard log file on the host operating system that is accessible using standard Linux tooling. Only users in the admin role can view or modify privileged settings in the Redis Enterprise UI. 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-000378-DB-000365
1 Rule
Redis Enterprise DBMS must prohibit user installation of logic modules (stored procedures, functions, triggers, views, etc.) without explicit privileged status.
Medium Severity
Redis Enterprise permits the installation of logic modules through a control plane layer to the database, which requires privilege access to the control plane. This is provisioned for support during database runtime by a user with permissions to create a database. The ability to load modules directly within the database is not supported in Redis Enterprise; however, it is supported in open-source Redis.
SRG-APP-000380-DB-000360
1 Rule
Redis Enterprise DBMS must enforce access restrictions associated with changes to the configuration of Redis Enterprise DBMS or database(s).
Medium Severity
Failure to provide logical access restrictions associated with changes to 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 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 system components for the purposes of initiating changes, including upgrades and modifications.
SRG-APP-000133-DB-000179
1 Rule
Redis Enterprise DBMS must limit privileges to change software modules; to include stored procedures, functions, and triggers, and links to software external to Redis Enterprise DBMS.
Medium Severity
If the system were to allow any user to make changes to software libraries, those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process. Accordingly, only qualified and authorized individuals must be allowed to obtain access to information system components for purposes of initiating changes, including upgrades and modifications. Unmanaged changes that occur to the database software libraries or configuration can lead to unauthorized or compromised installations. For Redis Enterprise this is largely handled by the RHEL OS. The OS audit logs record any changes made to the database software libraries, related applications, and configuration files. Redis Enterprise also generates audit logs by default. All log entries are shown on the Log page in the Redis Enterprise web UI as well as written in the syslog. Only users in the admin role on the Redis Enterprise web UI and users with privileged access to the server can view, add, or remove modules. In both cases, this is logged.
SRG-APP-000133-DB-000198
1 Rule
Redis Enterprise DBMS software installation account must be restricted to authorized users.
Medium Severity
When dealing with change control issues, it should be noted any changes to the hardware, software, and/or firmware components of the information system and/or application can have significant effects on the overall security of the system. If the system were to allow any user to make changes to software libraries, those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process. Accordingly, only qualified and authorized individuals must be allowed access to information system components for purposes of initiating changes, including upgrades and modifications. DBA and other privileged administrative or application owner accounts are granted privileges that allow actions that can have a great impact on database security and operation. It is especially important to grant privileged access to only those persons who are qualified and authorized to use them.
SRG-APP-000133-DB-000199
1 Rule
Database software, including DBMS configuration files, must be stored in dedicated directories, or DASD pools, separate from the host OS and other applications.
Medium Severity
When dealing with change control issues, it should be noted 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. Multiple applications can provide a cumulative negative effect. A vulnerability and subsequent exploit to one application can lead to an exploit of other applications sharing the same security context. For example, an exploit to a web server process that leads to unauthorized administrative access to host system directories can most likely lead to a compromise of all applications hosted by the same system. Database software not installed using dedicated directories both threatens and is threatened by other hosted applications. Access controls defined for one application may by default provide access to the other application's database objects or directories. Any method that provides any level of separation of security context assists in the protection between applications.
SRG-APP-000133-DB-000362
1 Rule
The role(s)/group(s) used to modify database structure (including but not necessarily limited to tables, indexes, storage, etc.) and logic modules (stored procedures, functions, triggers, links to software external to Redis Enterprise DBMS, etc.) must be restricted to authorized users.
Medium Severity
If the DBMS were to allow any user to make changes to database structure or logic, those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process. Accordingly, only qualified and authorized individuals must be allowed to obtain access to information system components for purposes of initiating changes, including upgrades and modifications. Unmanaged changes that occur to the database software libraries or configuration can lead to unauthorized or compromised installations. Redis Enterprise provides configurable role-based access control inherently within the product. To ensure that users are provided the appropriate permissions that they are authorized to use, check each user's assigned roles.
SRG-APP-000516-DB-000363
1 Rule
Redis Enterprise DBMS must be configured in accordance with the security configuration settings based on DoD security configuration and implementation guidance, including STIGs, NSA configuration guides, CTOs, DTMs, and IAVMs.
Medium Severity
Configuring the DBMS to implement organization-wide security implementation guides and security checklists ensures compliance with federal standards and establishes a common security baseline across the DoD that reflects the most restrictive security posture consistent with operational requirements. In addition to this STIG, sources of guidance on security and information assurance exist. These include NSA configuration guides, CTOs, DTMs, and IAVMs. The DBMS must be configured in compliance with guidance from all such relevant sources.
SRG-APP-000383-DB-000364
1 Rule
Redis Enterprise DBMS must disable network functions, ports, protocols, and services deemed by the organization to be nonsecure, in accord with the Ports, Protocols, and Services Management (PPSM) guidance.
Medium Severity
Use of nonsecure network functions, ports, protocols, and services exposes the system to avoidable threats.
SRG-APP-000141-DB-000091
1 Rule
Unused database components, DBMS software, and database objects must be removed.
Medium Severity
Information systems 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). It is detrimental for software products to provide, or install by default, functionality exceeding requirements or mission objectives. DBMSs must adhere to the principles of least functionality by providing only essential capabilities. Modules are not needed for Redis Enterprise to function properly but can make some tasks easier. The following come by default on Redis Enterprise 6: RedisBloom RediSearch RedisGraph RedisJSON RedisTimeSeries More information can be found at: https://docs.redislabs.com/latest/modules/?s=modules
SRG-APP-000141-DB-000092
1 Rule
Unused database components that are integrated in Redis Enterprise DBMS and cannot be uninstalled must be disabled.
Medium Severity
Information systems 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). It is detrimental for software products to provide, or install by default, functionality exceeding requirements or mission objectives. DBMSs must adhere to the principles of least functionality by providing only essential capabilities. Unused, unnecessary DBMS components increase the attack vector for the DBMS by introducing additional targets for attack. By minimizing the services and applications installed on the system, the number of potential vulnerabilities is reduced. Components of the system that are unused and cannot be uninstalled must be disabled. The techniques available for disabling components will vary by DBMS product, OS, and the nature of the component and may include DBMS configuration settings, OS service settings, OS file access security, and DBMS user/role permissions.
SRG-APP-000141-DB-000093
1 Rule
Access to external executables must be disabled or restricted.
Medium Severity
Information systems 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). It is detrimental for applications to provide, or install by default, functionality exceeding requirements or mission objectives. Applications must adhere to the principles of least functionality by providing only essential capabilities. DBMSs may spawn additional external processes to execute procedures that are defined in the DBMS but stored in external host files (external procedures). The spawned process used to execute the external procedure may operate within a different OS security context than the DBMS and provide unauthorized access to the host system.
SRG-APP-000142-DB-000094
1 Rule
Redis Enterprise DBMS must be configured to prohibit or restrict the use of organization-defined functions, ports, protocols, and/or services, as defined in the PPSM CAL and vulnerability assessments.
Medium Severity
To prevent unauthorized connection of devices, unauthorized transfer of information, or unauthorized tunneling (i.e., embedding of data types within data types), organizations must disable or restrict unused or unnecessary physical and logical ports/protocols/services on information systems. 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. Additionally, it is sometimes convenient to provide multiple services from a single component (e.g., email and web services); however, doing so increases risk over limiting the services provided by any one component. To support the requirements and principles of least functionality, the application must support the organizational requirements providing only essential capabilities and limiting the use of ports, protocols, and/or services to only those required, authorized, and approved to conduct official business or to address authorized quality of life issues. Database Management Systems using ports, protocols, and services deemed unsafe are open to attack through those ports, protocols, and services. This can allow unauthorized access to the database and through the database to other components of the information system.
SRG-APP-000389-DB-000372
1 Rule
Redis Enterprise DBMS must require users to reauthenticate when organization-defined circumstances or situations require reauthentication.
Medium Severity
The DOD standard for authentication of an interactive user is the presentation of a Common Access Card (CAC) or other physical token bearing a valid, current, DOD-issued Public Key Infrastructure (PKI) certificate, coupled with a Personal Identification Number (PIN) to be entered by the user at the beginning of each session and whenever reauthentication is required. Without reauthentication, users may access resources or perform tasks for which they do not have authorization. When applications provide the capability to change security roles or escalate the functional capability of the application, it is critical the user reauthenticate. In addition to the reauthentication requirements associated with session locks, organizations may require reauthentication of individuals and/or devices in other situations, including (but not limited to) the following circumstances: (i) When authenticators change; (ii) When roles change; (iii) When security categories of information systems change; (iv) When the execution of privileged functions occurs; (v) After a fixed period of time; or (vi) Periodically. Within the DOD, the minimum circumstances requiring reauthentication are privilege escalation and role changes. For more information refer to: https://docs.redislabs.com/latest/rs/administering/access-control/.
SRG-APP-000148-DB-000103
1 Rule
Redis Enterprise DBMS must uniquely identify and authenticate organizational users (or processes acting on behalf of organizational users).
Medium Severity
Redis Enterprise allows the user to configure unique users per role. Review roles and ensure roles use unique organizational principles per user to the database. Redis does come with a default user for backwards compatibility. This user may be disabled.
SRG-APP-000171-DB-000074
1 Rule
If passwords are used for authentication, Redis Enterprise DBMS must store only hashed, salted representations of passwords.
Medium Severity
The DOD standard for authentication is DOD-approved PKI certificates. Authentication based on User ID and Password may be used only when it is not possible to employ a PKI certificate, and requires authorizing official (AO) approval. In such cases, database passwords stored in clear text, using reversible encryption, or using unsalted hashes would be vulnerable to unauthorized disclosure. Database passwords must always be in the form of one-way, salted hashes when stored internally or externally to the DBMS.
SRG-APP-000400-DB-000367
1 Rule
Redis Enterprise DBMS must prohibit the use of cached authenticators after an organization-defined time period.
Medium Severity
If cached authentication information is out of date, the validity of the authentication information may be questionable. For more information on configuring time out periods on Redis Enterprise refer to: https://docs.redislabs.com/latest/rs/administering/access-control/
SRG-APP-000175-DB-000067
1 Rule
Redis Enterprise DBMS, when utilizing PKI-based authentication, must validate certificates by performing RFC 5280-compliant certification path validation.
Medium Severity
The DoD standard for authentication is DoD-approved PKI certificates. A certificate's certification path is the path from the end entity certificate to a trusted root certification authority (CA). Certification path validation is necessary for a relying party to make an informed decision regarding acceptance of an end entity certificate. Certification path validation includes checks such as certificate issuer trust, time validity, and revocation status for each certificate in the certification path. Revocation status information for CA and subject certificates in a certification path is commonly provided via certificate revocation lists (CRLs) or online certificate status protocol (OCSP) responses. Database Management Systems that do not validate certificates by performing RFC 5280-compliant certification path validation are in danger of accepting certificates that are invalid and/or counterfeit. This could allow unauthorized access to the database. For more information refer to: https://docs.redislabs.com/latest/rs/administering/designing-production/security/
SRG-APP-000176-DB-000068
1 Rule
Redis Enterprise DBMS must enforce authorized access to all PKI private keys stored/used by Redis Enterprise DBMS.
High Severity
The DoD standard for authentication is DoD-approved PKI certificates. PKI certificate-based authentication is performed by requiring the certificate holder to cryptographically prove possession of the corresponding private key. If the private key is stolen, an attacker can use the private key(s) to impersonate the certificate holder. In cases where the DBMS-stored private keys are used to authenticate the DBMS to the system's clients, loss of the corresponding private keys would allow an attacker to successfully perform undetected man-in-the-middle attacks against the DBMS system and its clients. Both the holder of a digital certificate and the issuing authority must take careful measures to protect the corresponding private key. Private keys should always be generated and protected in FIPS 140-2 or 140-3 validated cryptographic modules. All access to the private key(s) of the DBMS must be restricted to authorized and authenticated users. If unauthorized users have access to one or more of the DBMS's private keys, an attacker could gain access to the key(s) and use them to impersonate the database on the network or otherwise perform unauthorized actions.
SRG-APP-000177-DB-000069
1 Rule
Redis Enterprise DBMS must map the PKI-authenticated identity to an associated user account.
Medium Severity
The DoD standard for authentication is DoD-approved PKI certificates. Once a PKI certificate has been validated, it must be mapped to a DBMS user account for the authenticated identity to be meaningful to the DBMS and useful for authorization decisions.
SRG-APP-000178-DB-000083
1 Rule
Redis Enterprise DBMS must obscure feedback of authentication information during the authentication process to protect the information from possible exploitation/use by unauthorized individuals.
High Severity
The DoD standard for authentication is DoD-approved PKI certificates. Normally, with PKI authentication, the interaction with the user for authentication will be handled by a software component separate from the DBMS, such as ActivID ActivClient. However, in cases where the DBMS controls the interaction, this requirement applies. To prevent the compromise of authentication information such as passwords and PINs during the authentication process, the feedback from the system must not provide any information that would allow an unauthorized user to compromise the authentication mechanism. Obfuscation of user-provided authentication secrets when typed into the system is a method used in addressing this risk. Displaying asterisks when a user types in a password or a smart card PIN is an example of obscuring feedback of authentication secrets. This calls for review of applications, which will require collaboration with the application developers. It is recognized that in many cases, the database administrator (DBA) is organizationally separate from the application developers, and may have limited, if any, access to source code. Nevertheless, protections of this type are so important to the secure operation of databases that they must not be ignored. At a minimum, the DBA must attempt to obtain assurances from the development organization that this issue has been addressed and must document what has been discovered.
SRG-APP-000179-DB-000114
1 Rule
Redis Enterprise DBMS must use NIST FIPS 140-2 or 140-3 validated cryptographic modules for cryptographic operations.
High Severity
Use of weak or not validated cryptographic algorithms undermines the purposes of utilizing encryption and digital signatures to protect data. Weak algorithms can be easily broken and not validated cryptographic modules may not implement algorithms correctly. Unapproved cryptographic modules or algorithms should not be relied on for authentication, confidentiality, or integrity. Weak cryptography could allow an attacker to gain access to and modify data stored in the database as well as the administration settings of the DBMS. Applications, including DBMSs, utilizing cryptography are required to use approved NIST FIPS 140-2 or 140-3 validated cryptographic modules that meet the requirements of applicable federal laws, Executive Orders, directives, policies, regulations, standards, and guidance. NSA Type-X (where X=1, 2, 3, 4) products are NSA-certified, hardware-based encryption modules. The standard for validating cryptographic modules will transition to the NIST FIPS 140-3 publication. FIPS 140-2 modules can remain active for up to five years after validation or until September 21, 2026, when the FIPS 140-2 validations will be moved to the historical list. Even on the historical list, CMVP supports the purchase and use of these modules for existing systems. While Federal Agencies decide when they move to FIPS 140-3 only modules, purchasers are reminded that for several years there may be a limited selection of FIPS 140-3 modules from which to choose. CMVP recommends purchasers consider all modules that appear on the Validated Modules Search Page: https://csrc.nist.gov/projects/cryptographic-module-validation-program/validated-modules More information on the FIPS 140-3 transition can be found here: https://csrc.nist.gov/Projects/fips-140-3-transition-effort/ For more detailed information on Redis, refer to: https://docs.redislabs.com/latest/rs/administering/designing-production/security/
SRG-APP-000180-DB-000115
1 Rule
Redis Enterprise DBMS must uniquely identify and authenticate non-organizational users (or processes acting on behalf of non-organizational users).
Medium Severity
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, guest researchers, individuals from allied nations). 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. Accordingly, a risk assessment is used in determining the authentication needs of the organization. Scalability, practicality, and security are simultaneously considered in balancing the need to ensure ease of use for access to federal information and information systems with the need to protect and adequately mitigate risk to organizational operations, organizational assets, individuals, other organizations, and the nation.
SRG-APP-000416-DB-000380
1 Rule
Redis Enterprise DBMS must use NSA-approved cryptography to protect classified information in accordance with the data owners requirements.
High Severity
Use of weak or untested encryption algorithms undermines the purposes of utilizing 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. It is the responsibility of the data owner to assess the cryptography requirements in light of applicable federal laws, Executive Orders, directives, policies, regulations, and standards. NSA-approved cryptography for classified networks is hardware based. This requirement addresses the compatibility of a DBMS with the encryption devices. Redis Enterprise does not encrypt data at rest. Redis Enterprise encryption of data at rest is handled by the underlying Linux OS.
SRG-APP-000514-DB-000381
1 Rule
Redis Enterprise DBMS must implement NIST FIPS 140-2 or 140-3 validated cryptographic modules to provision digital signatures.
Medium Severity
Use of weak or untested encryption algorithms undermines the purposes of utilizing 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 or Publication 140-3, 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-DB-000382
1 Rule
Redis Enterprise DBMS must implement NIST FIPS 140-2 or 140-3 validated cryptographic modules to generate and validate cryptographic hashes.
Medium Severity
Use of weak or untested encryption algorithms undermines the purposes of utilizing 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 or Publication 140-3, 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-DB-000383
1 Rule
Redis Enterprise DBMS must implement NIST FIPS 140-2 or 140-3 validated cryptographic modules to protect unclassified information requiring confidentiality and cryptographic protection, in accordance with the data owners requirements.
Medium Severity
Use of weak or untested encryption algorithms undermines the purposes of utilizing 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. It is the responsibility of the data owner to assess the cryptography requirements in light of applicable federal laws, Executive Orders, directives, policies, regulations, and standards. For detailed information, refer to NIST FIPS Publication 140-2 or Publication 140-3, Security Requirements for Cryptographic Modules. Note that the product's cryptographic modules must be validated and certified by NIST as FIPS-compliant. The DBMS relies on the underlying Linux operating system to meet this check.
SRG-APP-000211-DB-000122
1 Rule
Redis Enterprise DBMS must separate user functionality (including user interface services) from database management functionality.
Medium Severity
Information system management functionality includes functions necessary to administer databases, network components, workstations, or servers and typically requires privileged user access. 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, 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 domain and with additional access controls. If administrative functionality or information regarding DBMS management is presented on an interface available for users, information on DBMS settings may be inadvertently made available to the user.
SRG-APP-000211-DB-000122
1 Rule
Access to the Redis Enterprise control plane must be restricted.
High Severity
If administrative functionality or information regarding DBMS management is presented on an interface available for users, information on DBMS settings may be inadvertently made available to the user. The Redis administrative control plane helps facilitate configuration and application integrations with the database. Exposing the control plane application to any network interface that is available to non-administrative personnel leaves the server vulnerable to attempts to access the management application. To mitigate this risk, the management application must only be run on network interfaces tied to a dedicated management network or firewall rule to limit access to dedicated trusted machines. Redis does not provide a configuration setting that can be used to restrict access to the administrative control plane, so firewall controls must be applied.
SRG-APP-000223-DB-000168
1 Rule
Redis Enterprise DBMS must recognize only system-generated session identifiers.
Medium Severity
This requirement focuses on communications protection for the DBMS session rather than for the network packet. The intent of this control is to establish grounds for confidence at each end of a communications session in the ongoing identity of the other party and in the validity of the information being transmitted. Redis Enterprise Software (RS) uses self-signed certificates out-of-the-box to make sure that sessions are secure by default. When using the default self-signed certificates, an untrusted connection notification is shown in the web UI. Depending on the browser used, the user can allow the connection for each session or add an exception to make the site trusted in future sessions.
SRG-APP-000224-DB-000384
1 Rule
Redis Enterprise DBMS must maintain the authenticity of communications sessions by guarding against man-in-the-middle attacks that guess at Session ID values.
Medium Severity
Session IDs are tokens generated by web applications to uniquely identify an application user's session. Applications will make application decisions and execute business logic based on the session ID. Unique session identifiers or IDs are the opposite of sequentially generated session IDs, which can be easily guessed by an attacker. Unique session IDs help to reduce predictability of said identifiers. Unique session IDs address man-in-the-middle attacks, including session hijacking or insertion of false information into a session. If the attackers are unable to identify or guess the session information related to pending application traffic, they will have more difficulty in hijacking the session or otherwise manipulating valid sessions. When a user logs out, or when any other session termination event occurs, the application must terminate the user session to minimize the potential for an attacker to hijack that particular user session.
SRG-APP-000427-DB-000385
1 Rule
Redis Enterprise DBMS must only accept end entity certificates issued by DoD PKI or DoD-approved PKI Certification Authorities (CAs) for the establishment of all encrypted sessions.
Medium Severity
Only DoD-approved external PKIs have been evaluated to ensure that they have security controls and identity vetting procedures in place which are sufficient for DoD systems to rely on the identity asserted in the certificate. PKIs lacking sufficient security controls and identity vetting procedures risk being compromised and issuing certificates that enable adversaries to impersonate legitimate users.
SRG-APP-000225-DB-000153
1 Rule
Redis Enterprise DBMS must fail to a secure state if system initialization fails, shutdown fails, or aborts fail.
Medium Severity
Failure to a known state can address safety or security in accordance with the mission/business needs of the organization. Databases must fail to a known consistent state. Transactions must be successfully completed or rolled back. All data is stored and managed exclusively in either RAM or RAM + Flash Memory (Redis on Flash) and therefore, is at risk of being lost upon a process or server failure. As Redis Enterprise Software is not just a caching solution, but also a full-fledged database, persistence to disk is critical. Therefore, Redis Enterprise Software supports persisting data to disk on a per-database basis. Append Only File (AOF) is a continuous writing of data to disk Snapshot. It is not a replacement for backups but should be done in addition to backups. AOF writes the latest "write" commands into a file either every second or during every write. It resembles a traditional RDBMS's redo log. This file can later be replayed to recover from a crash. To ensure data availability, Redis Enterprise Software must be implemented in, at a minimum, a three-node cluster. A three-node cluster can withstand one node failure without data loss. If more than one node is lost in a three-node cluster and persistence is not enabled, then data loss is to be expected. The Append Only File is a persistence mode that provides much better durability. For instance, using the default data fsync policy, Redis can lose just one second of writes in a dramatic event like a server power outage, or a single write if something goes wrong with the Redis process itself, but the operating system is still running correctly. AOF and RDB persistence can be enabled at the same time without problems. If the AOF is enabled on startup Redis will load the AOF, that is the file with the better durability guarantees. Check http://redis.io/topics/persistence for more information. Redis Labs additionally recommends using the wait command. Review the wait command at: https://redis.io/commands/wait and determine if this meets organizational needs.
SRG-APP-000226-DB-000147
1 Rule
In the event of a system failure, Redis Enterprise DBMS must preserve any information necessary to determine cause of failure and any information necessary to return to operations with 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 information system state information helps to facilitate system restart and return to the operational mode of the organization with less disruption of mission/business processes. Since it is usually not possible to test this capability in a production environment, systems should either be validated in a testing environment or prior to installation. This requirement is usually a function of the design of the IDPS component. Compliance can be verified by acceptance/validation processes or vendor attestation. Additional information can be found at: https://docs.redislabs.com/latest/rs/administering/troubleshooting/cluster-recovery/
SRG-APP-000231-DB-000154
1 Rule
Redis Enterprise DBMS must protect the confidentiality and integrity of all information at rest.
High Severity
This control is intended to address the confidentiality and integrity of information at rest in non-mobile devices and covers user information and system information. Information at rest refers to the state of information when it is located on a secondary storage device (e.g., disk drive, tape drive) within an organizational information system. Applications and application users generate information throughout the course of their application use. User data generated, as well as application-specific configuration data, needs to be protected. Organizations may choose to employ different mechanisms to achieve confidentiality and integrity protections, as appropriate. If the confidentiality and integrity of application data is not protected, the data will be open to compromise and unauthorized modification. Redis Enterprise does not inherently encrypt data at rest and is designed to have the OS handle encryption for data at rest.
SRG-APP-000428-DB-000386
1 Rule
Redis Enterprise DBMS must implement cryptographic mechanisms to prevent unauthorized modification of organization-defined information at rest (to include, at a minimum, PII and classified information) on organization-defined information system components.
High Severity
DBMSs handling data requiring data at rest protections must employ cryptographic mechanisms to prevent unauthorized disclosure and modification of the information at rest. These cryptographic mechanisms may be native to the DBMS or implemented via additional software or operating system/file system settings, as appropriate to the situation. 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). The decision whether and what to encrypt rests with the data owner and is also influenced by the physical measures taken to secure the equipment and media on which the information resides. Redis Enterprise does not inherently encrypt data at rest; however, this can be handled at the OS level.
SRG-APP-000429-DB-000387
1 Rule
Redis Enterprise DBMS must implement cryptographic mechanisms preventing the unauthorized disclosure of organization-defined information at rest on organization-defined information system components.
High Severity
DBMSs handling data requiring "data at rest" protections must employ cryptographic mechanisms to prevent unauthorized disclosure and modification of the information at rest. These cryptographic mechanisms may be native to the DBMS or implemented via additional software or operating system/file system settings, as appropriate to the situation. 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). The decision whether and what to encrypt rests with the data owner and is also influenced by the physical measures taken to secure the equipment and media on which the information resides. Redis Enterprise does not inherently encrypt data at rest; however, this can be handled at the OS level.
SRG-APP-000243-DB-000128
1 Rule
Database contents must be protected from unauthorized and unintended information transfer by enforcement of a data-transfer policy.
Medium Severity
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.
SRG-APP-000243-DB-000373
1 Rule
Redis Enterprise DBMS must prevent unauthorized and unintended information transfer via shared system resources.
Medium Severity
The purpose of this control is to prevent information, including encrypted representations of information, produced by the actions of a prior user/role (or the actions of a process acting on behalf of a prior user/role) from being available to any current user/role (or current process) that obtains access to a shared system resource (e.g., registers, main memory, secondary storage) after the resource has been released back to the information system. Control of information in shared resources is also referred to as object reuse. For more information, refer to: https://redis.io/topics/acl more information on creating clearly defined categories and adding/editing users to categories and ACLs. and https://docs.redislabs.com/latest/rs/administering/access-control/user-roles/
SRG-APP-000243-DB-000374
1 Rule
Access to database files must be limited to relevant processes and to authorized, administrative users.
Medium Severity
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.
SRG-APP-000441-DB-000378
1 Rule
Redis Enterprise DBMS must maintain the confidentiality and integrity of information during preparation for transmission.
Medium Severity
Information can be either unintentionally or maliciously disclosed or modified during preparation for transmission, including, for example, during aggregation, at protocol transformation points, and during packing/unpacking. These unauthorized disclosures or modifications compromise the confidentiality or integrity of the information. Use of this requirement will be limited to situations where the data owner has a strict requirement for ensuring data integrity and confidentiality is maintained at every step of the data transfer and handling process. When transmitting data, the DBMS, associated applications, and infrastructure must leverage transmission protection mechanisms. For more detailed information, refer to: https://docs.redislabs.com/latest/rs/administering/designing-production/security/
SRG-APP-000442-DB-000379
1 Rule
Redis Enterprise DBMS must maintain the confidentiality and integrity of information during reception.
Medium Severity
Information can be either unintentionally or maliciously disclosed or modified during reception, including, for example, during aggregation, at protocol transformation points, and during packing/unpacking. These unauthorized disclosures or modifications compromise the confidentiality or integrity of the information. This requirement applies only to those applications that are either distributed or can allow access to data nonlocally. Use of this requirement will be limited to situations where the data owner has a strict requirement for ensuring data integrity and confidentiality is maintained at every step of the data transfer and handling process. When receiving data, the DBMS, associated applications, and infrastructure must leverage protection mechanisms.
SRG-APP-000251-DB-000391
1 Rule
Redis Enterprise DBMS and associated applications must reserve the use of dynamic code execution for situations that require it.
Medium Severity
With respect to database management systems, one class of threat is known as code injection. It takes advantage of the dynamic execution capabilities of various programming languages, including dialects of LUA and SQL. In such cases, the attacker deduces the manner in which code is processed, either from inside knowledge or by observing system behavior in response to invalid inputs. When the attacker identifies scenarios where code is executed dynamically, the attacker is then able to craft input strings that subvert it. Potentially, the attacker can gain unauthorized access to data, including security settings, and severely corrupt or destroy the database. The principal protection against code injection is not to use dynamic execution except where it provides necessary functionality that cannot be used otherwise. Use strongly typed data items rather than general-purpose strings as input parameters to task-specific, pre-compiled stored procedures and functions (and triggers). Because Redis does not rely on a query language, there is no known method of SQL injection that would apply to Redis. Redis is a key value store and relies on commands that do not have a unified query language. Redis does have an embedded LUA interpreter and the user will need to disable these. When dynamic execution is necessary, ways to mitigate the risk include the following, which should be implemented both in the on-screen application and at the database level, in the stored procedures: - Allow strings as input only when necessary. - Rely on data typing to validate numbers, dates, etc. Do not accept invalid values. If substituting other values for them, think carefully about whether this could be subverted. - Limit the size of input strings to what is truly necessary. - If single quotes/apostrophes, double quotes, semicolons, equals signs, angle brackets, or square brackets will never be valid as input, reject them. - If comment markers will never be valid as input, reject them. - If HTML and XML tags, entities, comments, etc., will never be valid, reject them. - If wildcards are present, reject them unless truly necessary. - If there are range limits on the values that may be entered, enforce those limits. - Institute procedures for inspection of programs for correct use of dynamic coding by a party other than the developer. - Conduct rigorous testing of program modules that use dynamic coding, searching for ways to subvert the intended use. - Record the inspection and testing in the system documentation. - Bear in mind that all this applies not only to screen input, but also to the values in an incoming message to a web service or to a stored procedure called by a software component that has not itself been hardened in these ways. Not only can the caller be subject to such vulnerabilities, but it may also itself be the attacker. This calls for inspection of application source code, which will require collaboration with the application developers. It is recognized that in many cases, the database administrator (DBA) is organizationally separate from the application developers, and may have limited, if any, access to source code. Nevertheless, protections of this type are so important to the secure operation of databases that they must not be ignored. At a minimum, the DBA must attempt to obtain assurances from the development organization that this issue has been addressed and must document what has been discovered.
SRG-APP-000251-DB-000392
1 Rule
Redis Enterprise DBMS and associated applications, when making use of dynamic code execution, must scan input data for invalid values that may indicate a code injection attack.
Medium Severity
With respect to database management systems, one class of threat is known as code injection. It takes advantage of the dynamic execution capabilities of various programming languages, including dialects of LUA and SQL. In such cases, the attacker deduces the manner in which code is processed, either from inside knowledge or by observing system behavior in response to invalid inputs. When the attacker identifies scenarios where code is executed dynamically, the attacker is then able to craft input strings that subvert it. Potentially, the attacker can gain unauthorized access to data, including security settings, and severely corrupt or destroy the database. The principal protection against code injection is not to use dynamic execution except where it provides necessary functionality that cannot be used otherwise. Use strongly typed data items rather than general-purpose strings as input parameters to task-specific, pre-compiled stored procedures and functions (and triggers). Because Redis does not rely on a query language there is no known method of SQL injection that would apply to Redis. Redis is a key value store and relies on commands that do not have a unified query language. Redis does have an embedded LUA interpreter and the user will need to disable these. When dynamic execution is necessary, ways to mitigate the risk include the following, which should be implemented both in the on-screen application and at the database level, in the stored procedures: - Allow strings as input only when necessary. - Rely on data typing to validate numbers, dates, etc. Do not accept invalid values. If substituting other values for them, think carefully about whether this could be subverted. - Limit the size of input strings to what is truly necessary. - If single quotes/apostrophes, double quotes, semicolons, equals signs, angle brackets, or square brackets will never be valid as input, reject them. - If comment markers will never be valid as input, reject them. - If HTML and XML tags, entities, comments, etc., will never be valid, reject them. - If wildcards are present, reject them unless truly necessary. - If there are range limits on the values that may be entered, enforce those limits. - Institute procedures for inspection of programs for correct use of dynamic coding, by a party other than the developer. - Conduct rigorous testing of program modules that use dynamic coding, searching for ways to subvert the intended use. - Record the inspection and testing in the system documentation. - Bear in mind that all this applies not only to screen input, but also to the values in an incoming message to a web service or to a stored procedure called by a software component that has not itself been hardened in these ways. Not only can the caller be subject to such vulnerabilities; it may itself be the attacker. This calls for inspection of application source code, which will require collaboration with the application developers. It is recognized that in many cases, the database administrator (DBA) is organizationally separate from the application developers, and may have limited, if any, access to source code. Nevertheless, protections of this type are so important to the secure operation of databases that they must not be ignored. At a minimum, the DBA must attempt to obtain assurances from the development organization that this issue has been addressed and must document what has been discovered.
SRG-APP-000454-DB-000389
1 Rule
When updates are applied to Redis Enterprise DBMS software, any software components that have been replaced or made unnecessary must be removed.
Low Severity
Previous versions of DBMS components that are not removed from the information system after updates have been installed may be exploited by adversaries. Some DBMSs' installation tools may remove older versions of software automatically from the information system. In other cases, manual review and removal will be required. In planning installations and upgrades, organizations must include steps (automated, manual, or both) to identify and remove the outdated modules. A transition period may be necessary when both the old and the new software are required. This should be considered in the planning.
SRG-APP-000456-DB-000390
1 Rule
Security-relevant software updates to Redis Enterprise DBMS must be installed within the time period directed by an authoritative source (e.g., IAVM, CTOs, DTMs, and STIGs).
Medium Severity
Security flaws with software applications, including database management systems, 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). For more information, refer to: https://docs.redislabs.com/latest/rs/installing-upgrading/upgrading/
SRG-APP-000089-DB-000064
1 Rule
Redis Enterprise DBMS must generate audit records for DoD-defined auditable events within all DBMS/database components.
Medium Severity
Redis Enterprise does not generate all the DoD-required audit records. This could lead to incomplete information as follows: - Without an audit trail, unauthorized access to protected data and attempts to elevate or restrict privileges could go undetected. - It would be difficult to establish, correlate, and investigate the events relating to an incident or identify those responsible for one. - Without the creation of certain audit logs, it would be difficult to identify attempted attacks, and an audit trail would not be available for some forensic investigation for after-the-fact actions. For a complete list of unsupported audit requirements, email "disa.letterkenny.re.mbx.stig-customer-support-mailbox@mail.mil". Once the identity of the requester has been verified and the specifics of missing audit requirements obtained, risk can be assessed and a determination made as to whether it is acceptable.
SRG-APP-000164-DB-000401
1 Rule
If DBMS authentication using passwords is employed, Redis Enterprise DBMS must enforce the DOD standards for password complexity and lifetime.
Medium Severity
OS/enterprise authentication and identification must be used (SRG-APP-000023-DB-000001). Native DBMS authentication may be used only when circumstances make it unavoidable and must be documented and authorizing official (AO)-approved. The DOD standard for authentication is DOD-approved PKI certificates. Authentication based on User ID and Password may be used only when it is not possible to employ a PKI certificate, and requires AO approval. In such cases, the DOD standards for password complexity and lifetime must be implemented. DBMS products that can inherit the rules for these from the operating system or access control program (e.g., Microsoft Active Directory) must be configured to do so. For other DBMSs, the rules must be enforced using available configuration parameters or custom code.
SRG-APP-000456-DB-000400
1 Rule
Redis Enterprise products must be a version supported by the vendor.
High Severity
Unsupported commercial and database systems should not be used because fixes to newly identified bugs will not be implemented by the vendor. The lack of support can result in potential vulnerabilities. Systems at unsupported servicing levels or releases will not receive security updates for new vulnerabilities, which leaves them subject to exploitation. When maintenance updates and patches are no longer available, the database software is no longer considered supported and should be upgraded or decommissioned.
SRG-APP-000001-DB-000031
1 Rule
Redis Enterprise DBMS must limit the number of concurrent sessions to an organization-defined number per user for all accounts and/or account types.
Low Severity
Database management includes the ability to control the number of users and user sessions utilizing a DBMS. Unlimited concurrent connections to the DBMS could allow a successful denial-of-service (DoS) attack by exhausting connection resources; and a system can also fail or be degraded by an overload of legitimate users. Limiting the number of concurrent sessions per user is helpful in reducing these risks. This requirement addresses concurrent session control for a single account. It does not address concurrent sessions by a single user via multiple system accounts; and it does not deal with the total number of sessions across all accounts. The capability to limit the number of concurrent sessions per user must be configured in or added to the DBMS (for example, by use of a logon trigger), when this is technically feasible. Note that it is not sufficient to limit sessions via a web server or application server alone, because legitimate users and adversaries can potentially connect to the DBMS by other means. The organization will need to define the maximum number of concurrent sessions by account type, by account, or a combination thereof. In deciding on the appropriate number, it is important to consider the work requirements of the various types of users. For example, 2 might be an acceptable limit for general users accessing the database via an application; but 10 might be too few for a database administrator using a database management GUI tool, where each query tab and navigation pane may count as a separate session. (Sessions may also be referred to as connections or logons, which for the purposes of this requirement are synonyms.)