1.1.12 Ensure noexec option set on /var/tmp partition

Information

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 .

Solution

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

See Also

https://workbench.cisecurity.org/files/2948

Item Details

Category: ACCESS CONTROL

References: 800-53|AC-6(10), CSCv7|2.6

Plugin: Unix

Control ID: 0d6cd9b306afc2a6ed0140842146600b4328bd3a4e46f69bdcaa7453e029e652