1.1.14 Ensure nodev option set on /dev/shm partition (Scored)

Level 1 - Server 
Level 1 - Workstation

The nodev mount option specifies that the filesystem cannot contain special devices.

Since the /run/shm filesystem is not intended to support devices, set this option to ensure that users cannot attempt to create special devices in /dev/shm partitions.

Run the following command and verify that the nodev option is set on /dev/shm.

# mount | grep /dev/shm 
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev,noexec,relatime)

Edit the /etc/fstab file and add nodev 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,nodev /dev/shm
  • ubuntu1604/1/1/14.txt
  • Last modified: 2017/05/02 14:29
  • by Piotr K┼éoczewski