III - Administrative Sensitive
Rules and Groups employed by this XCCDF Profile
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SRG-OS-000027-GPOS-00008
Group -
Nutanix AOS must limit the number of concurrent sessions to ten for all accounts and/or account types.
Operating system management includes the ability to control the number of users and user sessions that utilize an operating system. Limiting the number of allowed users and sessions per user is hel...Rule Medium Severity -
SRG-OS-000029-GPOS-00010
Group -
Nutanix AOS must disconnect a session after 15 minutes of idle time for all connection types.
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 log out because of the temporary nature ...Rule Medium Severity -
SRG-OS-000279-GPOS-00109
Group -
Nutanix AOS must automatically terminate a user session after inactivity time-outs have expired or at shutdown.
Automatic session termination addresses the termination of user-initiated logical sessions in contrast to the termination of network connections associated with communications sessions (i.e., netwo...Rule Medium Severity -
SRG-OS-000032-GPOS-00013
Group -
Nutanix AOS must monitor remote access methods.
Remote access services, such as those providing remote access to network devices and information systems, which lack automated monitoring capabilities, increase risk and make remote user access man...Rule Medium Severity -
SRG-OS-000297-GPOS-00115
Group -
Nutanix AOS must control remote access methods.
Remote access services, such as those providing remote access to network devices and information systems, which lack automated control capabilities, increase risk and make remote user access manage...Rule Medium Severity -
SRG-OS-000033-GPOS-00014
Group -
Nutanix AOS must implement DoD-approved encryption to protect the confidentiality of remote access sessions.
Without confidentiality protection mechanisms, unauthorized individuals may gain access to sensitive information via a remote access session. Remote access is access to DoD nonpublic information s...Rule High Severity -
SRG-OS-000002-GPOS-00002
Group -
Nutanix AOS must automatically remove or disable temporary user accounts after 72 hours.
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 al...Rule Low Severity -
SRG-OS-000004-GPOS-00004
Group -
Nutanix AOS must audit all account actions.
Once an attacker establishes access to a system, the attacker often attempts to create a persistent method of reestablishing access. One way to accomplish this is for the attacker to create an acco...Rule Medium Severity -
SRG-OS-000080-GPOS-00048
Group -
Nutanix AOS must be configured with an encrypted boot password for root.
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., web servers and web portals) must be...Rule Low Severity -
SRG-OS-000312-GPOS-00122
Group -
Nutanix AOS must enforce discretionary access control on symlinks and hardlinks.
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...Rule Medium Severity -
SRG-OS-000327-GPOS-00127
Group -
Nutanix AOS must audit the execution of privileged functions.
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...Rule Medium Severity -
SRG-OS-000021-GPOS-00005
Group -
Nutanix AOS must enforce the limit of three consecutive invalid logon attempts by a user during a 15-minute time period.
By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by locking...Rule Medium Severity -
SRG-OS-000023-GPOS-00006
Group -
Nutanix AOS must be configured to display the Standard Mandatory DoD Notice and Consent Banner before granting access.
Display of a standardized and approved use notification before granting access to the operating system ensures privacy and security notification verbiage used is consistent with applicable federal ...Rule Low Severity -
SRG-OS-000228-GPOS-00088
Group -
Any publicly accessible connection to Nutanix AOS must display the Standard Mandatory DoD Notice and Consent Banner before granting access to the system.
Display of a standardized and approved use notification before granting access to the publicly accessible operating system ensures privacy and security notification verbiage used is consistent with...Rule Medium Severity -
SRG-OS-000062-GPOS-00031
Group -
Nutanix AOS must provide audit record generation capability for DoD-defined auditable events for successful and unsuccessful attempts to access, modify, or delete privileges, security objects, security levels, or categories of information (e.g., classification levels).
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 rec...Rule Medium Severity -
SRG-OS-000062-GPOS-00031
Group -
Nutanix AOS must provide audit record generation capability for DoD-defined auditable events for system and account management actions.
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 rec...Rule Medium Severity -
SRG-OS-000062-GPOS-00031
Group -
Nutanix AOS must provide audit record generation capability for DoD-defined auditable events for file attribute management actions.
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 rec...Rule Medium Severity -
SRG-OS-000062-GPOS-00031
Group -
Nutanix AOS must provide audit record generation capability for DoD-defined auditable events for system module management actions.
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 rec...Rule Medium Severity -
SRG-OS-000062-GPOS-00031
Group -
Nutanix AOS must provide audit record generation capability for DoD-defined auditable events for directory and permissions management actions.
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 rec...Rule Medium Severity -
SRG-OS-000062-GPOS-00031
Group -
Nutanix AOS must provide audit record generation capability for DoD-defined auditable events for file management actions.
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 rec...Rule Medium Severity -
SRG-OS-000062-GPOS-00031
Group -
Nutanix AOS must provide audit record generation capability for DoD-defined auditable events for all account creations, modifications, disabling, and terminations.
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 rec...Rule Medium Severity -
SRG-OS-000063-GPOS-00032
Group -
Nutanix AOS must allow only the ISSM (or individuals or roles appointed by the ISSM) to select which auditable events are to be audited.
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 audi...Rule Medium Severity -
SRG-OS-000064-GPOS-00033
Group -
Nutanix AOS must produce audit records containing the full-text recording of successful and unsuccessful uses and variations of the chown privileged commands.
Without generating audit records 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...Rule Medium Severity -
SRG-OS-000064-GPOS-00033
Group -
Nutanix AOS must produce audit records containing the full-text recording of successful and unsuccessful uses and variations of the creat privileged commands.
Without generating audit records 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...Rule Medium Severity -
SRG-OS-000064-GPOS-00033
Group -
Nutanix AOS must produce audit records containing the full-text recording of successful and unsuccessful uses and variations of the open-related privileged commands.
Without generating audit records 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...Rule Medium Severity
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