Level 1 - Server Level 1 - Workstation
The noexec
mount option specifies that the filesystem cannot contain executable binaries.
Since the /var/tmp
filesystem is only intended for temporary file storage, set this option to ensure that users cannot run executable binaries from /var/tmp
.
If a /var/tmp
partition exists run the following command and verify that the noexec
option is set on /var/tmp
.
# mount | grep /var/tmp tmpfs on /var/tmp type tmpfs (rw,nosuid,nodev,noexec,relatime)
Edit the /etc/fstab
file and add noexec
to the fourth field (mounting options) for the /var/tmp
partition. See the fstab(5)
manual page for more information.
Run the following command to remount /var/tmp
:
# mount -o remount,noexec /var/tmp