1.1.17 Ensure noexec option set on /dev/shm partition

Information

The noexec mount option specifies that the filesystem cannot contain executable binaries.

Rationale:

Setting this option on a file system prevents users from executing programs from shared memory. This deters users from introducing potentially malicious software on the system.

Solution

Edit the /etc/fstab file and add noexec 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:

# mount -o remount,noexec /dev/shm

See Also

https://workbench.cisecurity.org/files/2619

Item Details

Category: CONFIGURATION MANAGEMENT, SYSTEM AND INFORMATION INTEGRITY

References: 800-53|CM-11, 800-53|SI-3, CSCv7|2.6, CSCv7|8

Plugin: Unix

Control ID: 8ddec3ada1f4908a43c428803e3576a317ad83375769ecc2ef260e7388376b0d