STIGUI
V-257872CAT II — Medium severitySV-257872r958804_rule

RHEL 9 must mount /var/log with the nosuid option.

Rule version RHEL-09-231155 · STIG v2 · 2026-09-17

Discussion

The "nosuid" mount option causes the system to not execute "setuid" and "setgid" files with owner privileges. This option must be used for mounting any file system not containing approved "setuid" and "setguid" files. Executing files from untrusted file systems increases the opportunity for nonprivileged users to attain unauthorized administrative access.

Check

Verify "/var/log" is mounted with the "nosuid" 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 "nosuid" option, this is a finding.

Fix

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

Identifiers

Group ID
V-257872
Group title
SRG-OS-000368-GPOS-00154
Rule ID
SV-257872r958804_rule
Check ID
C-61613r925601_chk
Fix ID
F-61537r925602_fix