III - Administrative Classified
Rules and Groups employed by this XCCDF Profile
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SRG-OS-000134-GPOS-00068
<GroupDescription></GroupDescription>Group -
The Ubuntu operating system must ensure only users who need access to security functions are part of sudo group.
<VulnDiscussion>An isolation boundary provides access control and protects the integrity of the hardware, software, and firmware that perform...Rule High Severity -
SRG-OS-000279-GPOS-00109
<GroupDescription></GroupDescription>Group -
The Ubuntu operating system must automatically terminate a user session after inactivity timeouts have expired.
<VulnDiscussion>Automatic session termination addresses the termination of user-initiated logical sessions in contrast to the termination of ...Rule Medium Severity -
SRG-OS-000373-GPOS-00156
<GroupDescription></GroupDescription>Group -
The Ubuntu operating system must require users to reauthenticate for privilege escalation or when changing roles.
<VulnDiscussion>Without reauthentication, users may access resources or perform tasks for which they do not have authorization. When oper...Rule Medium Severity -
SRG-OS-000480-GPOS-00228
<GroupDescription></GroupDescription>Group -
The Ubuntu operating system default filesystem permissions must be defined in such a way that all authenticated users can read and modify only their own files.
<VulnDiscussion>Setting the most restrictive default permissions ensures that when new accounts are created they do not have unnecessary acce...Rule Medium Severity -
SRG-OS-000105-GPOS-00052
<GroupDescription></GroupDescription>Group -
The Ubuntu operating system must implement smart card logins for multifactor authentication for local and network access to privileged and nonprivileged accounts.
<VulnDiscussion>Without the use of multifactor authentication, the ease of access to privileged functions is greatly increased. Multifactor...Rule Medium Severity -
SRG-OS-000125-GPOS-00065
<GroupDescription></GroupDescription>Group -
The Ubuntu operating system must use strong authenticators in establishing nonlocal maintenance and diagnostic sessions.
<VulnDiscussion>Nonlocal maintenance and diagnostic activities are those activities conducted by individuals communicating through a network,...Rule Medium Severity -
SRG-OS-000126-GPOS-00066
<GroupDescription></GroupDescription>Group -
The Ubuntu operating system must immediately terminate all network connections associated with SSH traffic after a period 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-000163-GPOS-00072
<GroupDescription></GroupDescription>Group -
The Ubuntu operating system must immediately terminate all network connections associated with SSH traffic at the end of the session or after 10 minutes of inactivity.
<VulnDiscussion>Terminating an idle session within a short time period reduces the window of opportunity for unauthorized personnel to take c...Rule Medium Severity -
SRG-OS-000228-GPOS-00088
<GroupDescription></GroupDescription>Group -
The Ubuntu operating system must display the Standard Mandatory DOD Notice and Consent Banner before granting any local or remote connection to the system.
<VulnDiscussion>Display of a standardized and approved use notification before granting access to the publicly accessible operating system en...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.
<VulnDiscussion>Without protection of the transmitted information, confidentiality and integrity may be compromised because unprotected commu...Rule High Severity
Node 2
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