I - Mission Critical Classified
Rules and Groups employed by this XCCDF Profile
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SRG-APP-000024
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to automatically remove temporary user accounts after 72 hours.
<VulnDiscussion>When temporary user accounts remain active after no longer needed or for an excessive period, these accounts may be used to g...Rule Medium Severity -
SRG-APP-000024
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to automatically remove authorizations for temporary user accounts after 72 hours.
<VulnDiscussion>When temporary user accounts remain active after no longer needed or for an excessive period, these accounts may be used to g...Rule Medium Severity -
SRG-APP-000025
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to automatically disable accounts after a 35-day period of account inactivity.
<VulnDiscussion>Attackers that are able to exploit an inactive account can potentially obtain and maintain undetected access to an applicatio...Rule Medium Severity -
SRG-APP-000026
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to automatically audit account creation.
<VulnDiscussion>Once an attacker establishes access to a system, the attacker often attempts to create a persistent method of reestablishing ...Rule Medium Severity -
SRG-APP-000027
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to automatically audit account modification.
<VulnDiscussion>Once an attacker establishes access to a system, the attacker often attempts to create a persistent method of reestablishing ...Rule Medium Severity -
SRG-APP-000028
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to automatically audit account disabling actions.
<VulnDiscussion>When application accounts are disabled, user accessibility is affected. Once an attacker establishes access to an application...Rule Medium Severity -
SRG-APP-000029
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to automatically audit account removal actions.
<VulnDiscussion>When application accounts are removed, user accessibility is affected. Once an attacker establishes access to an application,...Rule Medium Severity -
SRG-APP-000065
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to automatically lock user accounts after three consecutive invalid logon attempts within a 15-minute time period.
<VulnDiscussion>By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise...Rule Medium Severity -
SRG-APP-000089
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to audit each authentication and authorization transaction.
<VulnDiscussion>Without the capability to generate audit records, it would be difficult to establish, correlate, and investigate the events r...Rule Medium Severity -
SRG-APP-000095
<GroupDescription></GroupDescription>Group -
AAA Services configuration audit records must identify what type of events occurred.
<VulnDiscussion>Without establishing what type of event occurred, it would be difficult to establish, correlate, and investigate the events r...Rule Medium Severity -
SRG-APP-000096
<GroupDescription></GroupDescription>Group -
AAA Services configuration audit records must identify when (date and time) the events occurred.
<VulnDiscussion>Without establishing when events occurred, it is impossible to establish, correlate, and investigate the events relating to a...Rule Medium Severity -
SRG-APP-000097
<GroupDescription></GroupDescription>Group -
AAA Services configuration audit records must identify where the events occurred.
<VulnDiscussion>Without establishing where events occurred, it is impossible to establish, correlate, and investigate the events relating to ...Rule Medium Severity -
SRG-APP-000098
<GroupDescription></GroupDescription>Group -
AAA Services configuration audit records must identify the source of the events.
<VulnDiscussion>Without establishing the source of the event, it is impossible to establish, correlate, and investigate the events leading up...Rule Medium Severity -
SRG-APP-000099
<GroupDescription></GroupDescription>Group -
AAA Services configuration audit records must identify the outcome of the events.
<VulnDiscussion>Without information about the outcome of events, security personnel cannot make an accurate assessment as to whether an attac...Rule Medium Severity -
SRG-APP-000100
<GroupDescription></GroupDescription>Group -
AAA Services configuration audit records must identify any individual user or process associated with the event.
<VulnDiscussion>Without information that establishes the identity of the subjects (i.e., users or processes acting on behalf of users) associ...Rule Medium Severity -
SRG-APP-000108
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to alert the SA and ISSO when any audit processing failure occurs.
<VulnDiscussion>It is critical for the appropriate personnel to be aware if a system is at risk of failing to process audit logs as required....Rule Medium Severity -
SRG-APP-000109
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to generate audit records overwriting the oldest audit records in a first-in-first-out manner.
<VulnDiscussion>It is critical that when AAA Services are at risk of failing to process audit logs as required, they take action to mitigate ...Rule Medium Severity -
SRG-APP-000109
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to queue audit records locally until communication is restored when any audit processing failure occurs.
<VulnDiscussion>It is critical that when AAA Services are at risk of failing to process audit logs as required, it take action to mitigate th...Rule Medium Severity -
SRG-APP-000116
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to use internal system clocks to generate time stamps for audit records.
<VulnDiscussion>Without an internal clock used as the reference for the time stored on each event to provide a trusted common reference for t...Rule Medium Severity -
SRG-APP-000141
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to disable non-essential modules.
<VulnDiscussion>It is detrimental for applications to provide, or install by default, functionality exceeding requirements or mission objecti...Rule Medium Severity -
SRG-APP-000142
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to use secure protocols when connecting to directory services.
<VulnDiscussion>Authenticity protection provides protection against man-in-the-middle attacks/session hijacking and the insertion of false in...Rule High Severity -
SRG-APP-000142
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to use protocols that encrypt credentials when authenticating clients, as defined in the PPSM CAL and vulnerability assessments.
<VulnDiscussion>Authentication protection of the client credentials (specifically the password or shared secret) prevents unauthorized access...Rule High Severity -
SRG-APP-000142
<GroupDescription></GroupDescription>Group -
AAA Services 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.
<VulnDiscussion>In order to prevent unauthorized connection of devices, unauthorized transfer of information, or unauthorized tunneling (i.e....Rule Medium Severity -
SRG-APP-000148
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to uniquely identify and authenticate organizational users.
<VulnDiscussion>To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to pre...Rule High Severity -
SRG-APP-000149
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to require multifactor authentication using Personal Identity Verification (PIV) credentials for authenticating privileged user accounts.
<VulnDiscussion>Without the use of multifactor authentication, the ease of access to privileged functions is greatly increased. Multifactor...Rule Medium Severity
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