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Rules and Groups employed by this XCCDF Profile

  • 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-000077-GPOS-00045

    <GroupDescription></GroupDescription>
    Group
  • The Ubuntu operating system must prohibit password reuse for a minimum of five generations.

    &lt;VulnDiscussion&gt;Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute...
    Rule Low Severity
  • SRG-OS-000078-GPOS-00046

    <GroupDescription></GroupDescription>
    Group
  • The Ubuntu operating system must enforce a minimum 15-character password length.

    &lt;VulnDiscussion&gt;The shorter the password, the lower the number of possible combinations that need to be tested before the password is comprom...
    Rule Medium Severity
  • SRG-OS-000120-GPOS-00061

    <GroupDescription></GroupDescription>
    Group
  • The Ubuntu operating system must employ a FIPS 140-2 approved cryptographic hashing algorithms for all created and stored passwords.

    &lt;VulnDiscussion&gt;The Ubuntu operating system must use a FIPS-compliant hashing algorithm to securely store the password. The FIPS-compliant ha...
    Rule Medium Severity
  • SRG-OS-000380-GPOS-00165

    <GroupDescription></GroupDescription>
    Group
  • The Ubuntu operating system must allow the use of a temporary password for system logons with an immediate change to a permanent password.

    &lt;VulnDiscussion&gt;Without providing this capability, an account may be created without a password. Non-repudiation cannot be guaranteed once an...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00225

    <GroupDescription></GroupDescription>
    Group
  • The Ubuntu operating system must prevent the use of dictionary words for passwords.

    &lt;VulnDiscussion&gt;If the Ubuntu operating system allows the user to select passwords based on dictionary words, then this increases the chances...
    Rule Medium Severity
  • SRG-OS-000373-GPOS-00156

    <GroupDescription></GroupDescription>
    Group
  • The Ubuntu operating system must require users to re-authenticate for privilege escalation and changing roles.

    &lt;VulnDiscussion&gt;Without re-authentication, users may access resources or perform tasks for which they do not have authorization. When the U...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00225

    <GroupDescription></GroupDescription>
    Group
  • The Ubuntu Operating system must be configured so that when passwords are changed or new passwords are established, pwquality must be used.

    &lt;VulnDiscussion&gt;Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, ...
    Rule Medium Severity
  • SRG-OS-000138-GPOS-00069

    <GroupDescription></GroupDescription>
    Group
  • The Ubuntu operating system must set a sticky bit on all public directories to prevent unauthorized and unintended information transferred via shared system resources.

    &lt;VulnDiscussion&gt;Preventing unauthorized information transfers mitigates the risk of information, including encrypted representations of infor...
    Rule Medium Severity
  • SRG-OS-000205-GPOS-00083

    <GroupDescription></GroupDescription>
    Group
  • The Ubuntu operating system must generate error messages that provide information necessary for corrective actions without revealing information that could be exploited by adversaries.

    &lt;VulnDiscussion&gt;Any operating system providing too much information in error messages risks compromising the data and security of the structu...
    Rule Medium Severity

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