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Rules and Groups employed by this XCCDF Profile

  • SRG-OS-000266-GPOS-00101

    <GroupDescription></GroupDescription>
    Group
  • The Ubuntu operating system must enforce password complexity by requiring that at least one special character be used.

    &lt;VulnDiscussion&gt;Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity o...
    Rule Low 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-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-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.

    &lt;VulnDiscussion&gt;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-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.

    &lt;VulnDiscussion&gt;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.

    &lt;VulnDiscussion&gt;The use of PIV credentials facilitates standardization and reduces the risk of unauthorized access. DoD has mandated the u...
    Rule Medium Severity
  • SRG-OS-000377-GPOS-00162

    <GroupDescription></GroupDescription>
    Group
  • The Ubuntu operating system must electronically verify Personal Identity Verification (PIV) credentials.

    &lt;VulnDiscussion&gt;The use of PIV credentials facilitates standardization and reduces the risk of unauthorized access. DoD has mandated the u...
    Rule Medium Severity
  • SRG-OS-000384-GPOS-00167

    <GroupDescription></GroupDescription>
    Group
  • The Ubuntu operating system for PKI-based authentication, must implement a local cache of revocation data in case of the inability to access revocation information via the network.

    &lt;VulnDiscussion&gt;Without configuring a local cache of revocation data, there is the potential to allow access to users who are no longer autho...
    Rule Medium 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-000329-GPOS-00128

    <GroupDescription></GroupDescription>
    Group
  • The Ubuntu operating system must automatically lock an account until the locked account is released by an administrator when three unsuccessful logon attempts have been made.

    &lt;VulnDiscussion&gt;By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise...
    Rule Low Severity

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