1.1.12 Ensure /var/tmp partition includes the noexec option
The noexec mount option specifies that the filesystem cannot contain executable binaries. Rationale: 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.
For existing /var/tmp partitions, edit the /etc/fstab file and add noexec to the fourth field (mounting options) of the /var/tmp entry. See the fstab(5) manual page for more information. Run the following command to remount /var/tmp : # mount -o remount,noexec /var/tmp