1.1.8.4 Ensure nosuid option set on /dev/shm partition

Information

The nosuid mount option specifies that the filesystem cannot contain setuid files.

Setting this option on a file system prevents users from introducing privileged programs onto the system and allowing non-root users to execute them.

Solution

Edit the /etc/fstab file and add nosuid to the fourth field (mounting options) for the /dev/shm partition. See the fstab(5) manual page for more information.

Run the following command to remount /dev/shm using the updated options from /etc/fstab:

# mount -o remount /dev/shm

See Also

https://workbench.cisecurity.org/files/4230

Item Details

Category: ACCESS CONTROL, MEDIA PROTECTION

References: 800-53|AC-3, 800-53|AC-5, 800-53|AC-6, 800-53|MP-2, CSCv7|14.6

Plugin: Unix

Control ID: c16bf8fe1bb69bf0a5a30f974337e99d09996356313a88171cd484f5c8371482