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Canonical Ubuntu 20.04 LTS Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • SRG-OS-000030-GPOS-00011

    <GroupDescription></GroupDescription>
    Group
  • The Ubuntu operating system must allow users to directly initiate a session lock for all connection types.

    &lt;VulnDiscussion&gt;A session lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the ...
    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.

    &lt;VulnDiscussion&gt;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-000075-GPOS-00043

    <GroupDescription></GroupDescription>
    Group
  • The Ubuntu operating system must enforce 24 hours/1 day as the minimum password lifetime. Passwords for new users must have a 24 hours/1 day minimum password lifetime restriction.

    &lt;VulnDiscussion&gt;Enforcing a minimum password lifetime helps to prevent repeated password changes to defeat the password reuse or history enfo...
    Rule Low Severity
  • SRG-OS-000076-GPOS-00044

    <GroupDescription></GroupDescription>
    Group
  • The Ubuntu operating system must enforce a 60-day maximum password lifetime restriction. Passwords for new users must have a 60-day maximum password lifetime restriction.

    &lt;VulnDiscussion&gt;Any password, no matter how complex, can eventually be cracked. Therefore, passwords need to be changed periodically. If the ...
    Rule Low Severity
  • SRG-OS-000080-GPOS-00048

    <GroupDescription></GroupDescription>
    Group
  • The Ubuntu operating system must require users to reauthenticate for privilege escalation or when changing roles.

    &lt;VulnDiscussion&gt;Without reauthentication, users may access resources or perform tasks for which they do not have authorization. When oper...
    Rule Medium Severity

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