III - Administrative Classified
Rules and Groups employed by this XCCDF Profile
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SRG-OS-000163-GPOS-00072
<GroupDescription></GroupDescription>Group -
The Ubuntu operating system must automatically terminate all network connections associated with SSH traffic at the end of the session or after 10 minutes of inactivity.
<VulnDiscussion>Automatic session termination addresses the termination of user-initiated logical sessions in contrast to the termination of ...Rule Medium Severity -
SRG-OS-000250-GPOS-00093
<GroupDescription></GroupDescription>Group -
The Ubuntu operating system must configure the SSH daemon to only use Message Authentication Codes (MACs) employing FIPS 140-2 approved cryptographic hash algorithms to protect the integrity of nonlocal maintenance and diagnostic communications.
<VulnDiscussion>Without cryptographic integrity protections, information can be altered by unauthorized users without detection. Nonlocal ma...Rule Medium Severity -
SRG-OS-000423-GPOS-00187
<GroupDescription></GroupDescription>Group -
The Ubuntu operating system must use SSH to protect the confidentiality and integrity of transmitted information unless otherwise protected by alternative physical safeguards, such as, at a minimum, a Protected Distribution System (PDS).
<VulnDiscussion>Without protection of the transmitted information, confidentiality and integrity may be compromised because unprotected commu...Rule High Severity -
SRG-OS-000480-GPOS-00229
<GroupDescription></GroupDescription>Group -
The Ubuntu operating system must not allow unattended or automatic login via ssh.
<VulnDiscussion>Failure to restrict system access to authenticated users negatively impacts Ubuntu operating system security.</VulnDiscuss...Rule High Severity -
SRG-OS-000066-GPOS-00034
<GroupDescription></GroupDescription>Group -
The Ubuntu operating system, for PKI-based authentication, must validate certificates by constructing a certification path (which includes status information) to an accepted trust anchor.
<VulnDiscussion>Without path validation, an informed trust decision by the relying party cannot be made when presented with any certificate n...Rule Medium Severity -
SRG-OS-000068-GPOS-00036
<GroupDescription></GroupDescription>Group -
The Ubuntu operating system must map the authenticated identity to the user or group 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 High Severity -
SRG-OS-000105-GPOS-00052
<GroupDescription></GroupDescription>Group -
The Ubuntu operating system must implement smart card logins for multifactor authentication for access to accounts.
<VulnDiscussion>Without the use of multifactor authentication, the ease of access to privileged functions is greatly increased. Multifactor ...Rule Medium Severity -
SRG-OS-000375-GPOS-00160
<GroupDescription></GroupDescription>Group -
The Ubuntu operating system must implement multifactor authentication for remote access to privileged accounts in such a way that one of the factors is provided by a device separate from the system gaining access.
<VulnDiscussion>Using an authentication device, such as a CAC or token that is separate from the information system, ensures that even if the...Rule Medium Severity -
SRG-OS-000376-GPOS-00161
<GroupDescription></GroupDescription>Group -
The Ubuntu operating system must accept Personal Identity Verification (PIV) credentials.
<VulnDiscussion>The use of PIV credentials facilitates standardization and reduces the risk of unauthorized access. DoD has mandated the use...Rule Medium Severity -
SRG-OS-000377-GPOS-00162
<GroupDescription></GroupDescription>Group -
The Ubuntu operating system must implement certificate status checking for multifactor authentication.
<VulnDiscussion>The use of PIV credentials facilitates standardization and reduces the risk of unauthorized access. DoD has mandated the use...Rule Medium Severity
Node 2
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