1.1.9 Ensure nosuid option set on /var/tmp partition

Information

The nosuid mount option specifies that the filesystem cannot contain setuid files. Since the /var/tmp filesystem is only intended for temporary file storage, set this option to ensure that users cannot create setuid files in /var/tmp .

Solution

Edit the /etc/fstab file and add nosuid 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,nosuid /var/tmp

See Also

https://workbench.cisecurity.org/files/2518

Item Details

Category: ACCESS CONTROL

References: 800-53|AC-6(10), CSCv7|5.1

Plugin: Unix

Control ID: 32163d9e717400036aa27e574e701f14b9568f150262cd142390636de66c03f1