AAA Services Security Requirements Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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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 -
SRG-APP-000150
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to require multifactor authentication using Common Access Card (CAC) Personal Identity Verification (PIV) credentials for authenticating non-privileged user accounts.
<VulnDiscussion>To assure accountability and prevent unauthenticated access, non-privileged users must utilize multifactor authentication to ...Rule Medium Severity -
SRG-APP-000158
<GroupDescription></GroupDescription>Group -
AAA Services used for 802.1x must be configured to uniquely identify network endpoints (supplicants) before the authenticator establishes any connection.
<VulnDiscussion>Without identifying devices, unidentified or unknown devices may be introduced, thereby facilitating malicious activity. For...Rule Medium Severity -
SRG-APP-000164
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to enforce a minimum 15-character password length.
<VulnDiscussion>Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute...Rule Medium Severity -
SRG-APP-000166
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to enforce password complexity by requiring that at least one uppercase character be used.
<VulnDiscussion>Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute...Rule Medium Severity -
SRG-APP-000167
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to enforce password complexity by requiring that at least one lowercase character be used.
<VulnDiscussion>Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute...Rule Medium Severity -
SRG-APP-000168
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to enforce password complexity by requiring that at least one numeric character be used.
<VulnDiscussion>Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute...Rule Medium Severity -
SRG-APP-000169
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to enforce password complexity by requiring that at least one special character be used.
<VulnDiscussion>Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute...Rule Medium Severity -
SRG-APP-000170
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to require the change of at least eight of the total number of characters when passwords are changed.
<VulnDiscussion>Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute...Rule Medium Severity -
For password-based authentication, AAA Services must be configured to store passwords using an approved salted key derivation function, preferably using a keyed hash.
<VulnDiscussion>Passwords must be protected at all times, and encryption is the standard method for protecting passwords. If passwords are no...Rule High Severity -
SRG-APP-000172
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to encrypt transmitted credentials using a FIPS-validated cryptographic module.
<VulnDiscussion>Passwords need to be protected at all times and encryption is the standard method for protecting passwords. If passwords are ...Rule High Severity -
SRG-APP-000173
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to enforce 24 hours as the minimum password lifetime.
<VulnDiscussion>Enforcing a minimum password lifetime helps prevent repeated password changes to defeat the password reuse or history enforce...Rule Medium Severity -
SRG-APP-000174
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to enforce a 60-day maximum password lifetime restriction.
<VulnDiscussion>Any password, no matter how complex, can eventually be cracked; therefore, passwords must be changed at specific intervals. ...Rule Medium Severity -
SRG-APP-000175
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to only accept certificates issued by a DoD-approved Certificate Authority for PKI-based authentication.
<VulnDiscussion>Without path validation, an informed trust decision by the relying party cannot be made when presented with any certificate n...Rule High Severity -
AAA Services must be configured to not accept certificates that have been revoked for PKI-based authentication.
<VulnDiscussion>Without path validation, an informed trust decision by the relying party cannot be made when presented with any certificate n...Rule High Severity -
SRG-APP-000176
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to enforce authorized access to the corresponding private key for PKI-based authentication.
<VulnDiscussion>If the private key is discovered, an attacker can use the key to authenticate as an authorized user and gain access to the ne...Rule Medium Severity -
SRG-APP-000177
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to map the authenticated identity to the user account for PKI-based authentication.
<VulnDiscussion>Without mapping the certificate used to authenticate to the user account, the ability to determine the identity of the indivi...Rule Medium Severity -
SRG-APP-000231
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to protect the confidentiality and integrity of all information at rest.
<VulnDiscussion>Information at rest refers to the state of information when it is located on a secondary storage device (e.g., disk drive and...Rule High Severity -
SRG-APP-000234
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to notify the system administrators (SAs) and information system security officer (ISSO) for account disabling actions.
<VulnDiscussion>When application accounts are disabled, user accessibility is affected. Accounts are utilized for identifying individual user...Rule Medium Severity -
SRG-APP-000294
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to prevent automatically removing emergency accounts.
<VulnDiscussion>Emergency accounts are administrator accounts that are established in response to crisis situations where the need for rapid ...Rule Medium Severity -
SRG-APP-000234
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to prevent automatically disabling emergency accounts.
<VulnDiscussion>Emergency accounts are administrator accounts that are established in response to crisis situations where the need for rapid ...Rule Low Severity -
SRG-APP-000291
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to notify the system administrators (SAs) and information system security officer (ISSO) when accounts are created.
<VulnDiscussion>Once an attacker establishes access to an application, the attacker often attempts to create a persistent method of re-establ...Rule Medium Severity -
SRG-APP-000292
<GroupDescription></GroupDescription>Group -
AAA Services must be configured to notify the system administrators (SAs) and information system security officer (ISSO) when accounts are modified.
<VulnDiscussion>When application accounts are modified, user accessibility is affected. Accounts are utilized for identifying individual user...Rule Medium Severity -
SRG-APP-000293
<GroupDescription></GroupDescription>Group
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