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← Back to Red Hat Enterprise Linux 9 Security Technical Implementation Guide

V-257875

CAT II (Medium)

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

Rule ID

SV-257875r958804_rule

STIG

Red Hat Enterprise Linux 9 Security Technical Implementation Guide

Version

V2R8

CCIs

CCI-001764

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 Content

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

Fix Text

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