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II - Mission Support Classified

Rules and Groups employed by this XCCDF Profile

  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • RHEL 9 SSH daemon must not allow compression or must only allow compression after successful authentication.

    &lt;VulnDiscussion&gt;If compression is allowed in an SSH connection prior to authentication, vulnerabilities in the compression software could res...
    Rule Medium Severity
  • SRG-OS-000364-GPOS-00151

    <GroupDescription></GroupDescription>
    Group
  • RHEL 9 SSH daemon must not allow GSSAPI authentication.

    &lt;VulnDiscussion&gt;Generic Security Service Application Program Interface (GSSAPI) authentication is used to provide additional authentication m...
    Rule Medium Severity
  • SRG-OS-000364-GPOS-00151

    <GroupDescription></GroupDescription>
    Group
  • RHEL 9 SSH daemon must not allow Kerberos authentication.

    &lt;VulnDiscussion&gt;Kerberos authentication for SSH is often implemented using Generic Security Service Application Program Interface (GSSAPI). I...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • RHEL 9 SSH daemon must not allow rhosts authentication.

    &lt;VulnDiscussion&gt;SSH trust relationships mean a compromise on one host can allow an attacker to move trivially to other hosts.&lt;/VulnDiscuss...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • RHEL 9 SSH daemon must not allow known hosts authentication.

    &lt;VulnDiscussion&gt;Configuring the IgnoreUserKnownHosts setting for the SSH daemon provides additional assurance that remote login via SSH will ...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • RHEL 9 SSH daemon must disable remote X connections for interactive users.

    &lt;VulnDiscussion&gt;When X11 forwarding is enabled, there may be additional exposure to the server and client displays if the sshd proxy display ...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • RHEL 9 SSH daemon must perform strict mode checking of home directory configuration files.

    &lt;VulnDiscussion&gt;If other users have access to modify user-specific SSH configuration files, they may be able to log into the system as anothe...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • RHEL 9 SSH daemon must display the date and time of the last successful account logon upon an SSH logon.

    &lt;VulnDiscussion&gt;Providing users feedback on when account accesses last occurred facilitates user recognition and reporting of unauthorized ac...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • RHEL 9 SSH daemon must prevent remote hosts from connecting to the proxy display.

    &lt;VulnDiscussion&gt;When X11 forwarding is enabled, there may be additional exposure to the server and client displays if the sshd proxy display ...
    Rule Medium Severity
  • SRG-OS-000023-GPOS-00006

    <GroupDescription></GroupDescription>
    Group
  • RHEL 9 must display the Standard Mandatory DOD Notice and Consent Banner before granting local or remote access to the system via a graphical user logon.

    &lt;VulnDiscussion&gt;Display of a standardized and approved use notification before granting access to the operating system ensures privacy and se...
    Rule Medium Severity

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