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III - Administrative Public

Rules and Groups employed by this XCCDF Profile

  • SRG-OS-000080-GPOS-00048

    <GroupDescription></GroupDescription>
    Group
  • RHEL 9 must require a boot loader superuser password.

    &lt;VulnDiscussion&gt;To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DOD-ap...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • RHEL 9 must disable the ability of systemd to spawn an interactive boot process.

    &lt;VulnDiscussion&gt;Using interactive or recovery boot, the console user could disable auditing, firewalls, or other services, weakening system s...
    Rule Medium Severity
  • SRG-OS-000080-GPOS-00048

    <GroupDescription></GroupDescription>
    Group
  • RHEL 9 must require a unique superusers name upon booting into single-user and maintenance modes.

    &lt;VulnDiscussion&gt;Having a nondefault grub superuser username makes password-guessing attacks less effective.&lt;/VulnDiscussion&gt;&lt;FalsePo...
    Rule High Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • RHEL 9 /boot/grub2/grub.cfg file must be group-owned by root.

    &lt;VulnDiscussion&gt;The "root" group is a highly privileged group. Furthermore, the group-owner of this file should not have any access privilege...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • RHEL 9 /boot/grub2/grub.cfg file must be owned by root.

    &lt;VulnDiscussion&gt;The " /boot/grub2/grub.cfg" file stores sensitive system configuration. Protection of this file is critical for system securi...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • RHEL 9 must disable virtual system calls.

    &lt;VulnDiscussion&gt;System calls are special routines in the Linux kernel, which userspace applications ask to do privileged tasks. Invoking a sy...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • RHEL 9 must clear the page allocator to prevent use-after-free attacks.

    &lt;VulnDiscussion&gt;Poisoning writes an arbitrary value to freed pages, so any modification or reference to that page after being freed or before...
    Rule Medium Severity
  • SRG-OS-000433-GPOS-00192

    <GroupDescription></GroupDescription>
    Group
  • RHEL 9 must clear SLUB/SLAB objects to prevent use-after-free attacks.

    &lt;VulnDiscussion&gt;Some adversaries launch attacks with the intent of executing code in nonexecutable regions of memory or in memory locations t...
    Rule Medium Severity
  • SRG-OS-000433-GPOS-00193

    <GroupDescription></GroupDescription>
    Group
  • RHEL 9 must enable mitigations against processor-based vulnerabilities.

    &lt;VulnDiscussion&gt;Kernel page-table isolation is a kernel feature that mitigates the Meltdown security vulnerability and hardens the kernel aga...
    Rule Low Severity
  • SRG-OS-000037-GPOS-00015

    <GroupDescription></GroupDescription>
    Group
  • RHEL 9 must enable auditing of processes that start prior to the audit daemon.

    &lt;VulnDiscussion&gt;Without the capability to generate audit records, it would be difficult to establish, correlate, and investigate the events r...
    Rule Low Severity

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