Ensure nosuid option set on /var partition

How it is checked

Audit method: Shell command

if ! findmnt -kn /var >/dev/null 2>&1; then echo compliant; elif findmnt -kn /var | grep -qw -- nosuid; then echo compliant; else echo /var' is mounted without nosuid'; fi

Expected output

compliant

How it is fixed

Fix method: Guidance or infrastructure patch

- IF - a separate partition exists for /var. Edit the /etc/fstab file and add nosuid to the fourth field (mounting options) for the /var partition. Example: <device> /var <fstype> defaults,rw,nosuid,nodev,relatime 0 0 Run the following command to remount /var with the configured options: # mount -o remount /var

Check this host

Run this on a machine you are allowed to audit. The scan is read-only.

tmaegis scan --target linux