1.1.6.4 Ensure nosuid option set on /var/log/audit partition

Information

The nosuid mount option specifies that the filesystem cannot contain setuid files.

Rationale:

Since the /var/log/audit filesystem is only intended for variable files such as logs, set this option to ensure that users cannot create setuid files in /var/log/audit.

Solution

Edit the /etc/fstab file and add nosuid to the fourth field (mounting options) for the /var/log/audit partition.
Example:

<device> /var/log/audit <fstype> defaults,rw,nosuid,nodev,noexec,relatime 0 0

Run the following command to remount /var/log/audit with the configured options:

# mount -o remount /var/log/audit

See Also

https://workbench.cisecurity.org/files/3939

Item Details

Category: ACCESS CONTROL, MEDIA PROTECTION

References: 800-53|AC-3, 800-53|AC-5, 800-53|AC-6, 800-53|MP-2, CSCv7|14.6

Plugin: Unix

Control ID: 06ba772ae9c7e2e6e2b471806c5db132191901f1abde73385d37076fe9437bc2