RHEL-09-231145 RHEL 9 must mount /var/log with the nodev option.
All changes in this version
Maps to CM-7(2) via CCI-001764
Title
RHEL 9 must mount /var/log with the nodev option.
Control
Verify "/var/log" is mounted with the "nodev" option: $ mount | grep /var/log /dev/mapper/rhel-var-log on /var/log type xfs (rw,nodev,nosuid,noexec,seclabel) If the "/var/log" file system is mounted without the "nodev" option, this is a finding.
Discussion
The "nodev" mount option causes the system to not interpret character or block special devices. Executing character or block special devices from untrusted file systems increases the opportunity for nonprivileged users to attain unauthorized administrative access. The only legitimate location for device files is the "/dev" directory located on the root partition, with the exception of chroot jails if implemented.
Related controls
CCI-001764
Fix
Modify "/etc/fstab" to use the "nodev" option on the "/var/log" directory.