RHEL 9 must mount /var/log/audit with the noexec option.

Documentable No

Rule ID SV-257874r958804_rule

CCI References

CCI-001764

Discussion

The "noexec" mount option causes the system to not execute binary files. This option must be used for mounting any file system not containing approved binary files, as they may be incompatible. Executing files from untrusted file systems increases the opportunity for nonprivileged users to attain unauthorized administrative access.

Check Procedure

Verify "/var/log/audit" is mounted with the "noexec" option:

$ mount | grep /var/log/audit

/dev/mapper/rhel-var-log-audit on /var/log/audit type xfs (rw,nodev,nosuid,noexec,seclabel)

If the "/var/log/audit" file system is mounted without the "noexec" option, this is a finding.

Fix Action

Modify "/etc/fstab" to use the "noexec" option on the "/var/log/audit" directory.