1.1.13 Ensure nodev option set on /home partition (Scored)

Level 1 - Server 
Level 1 - Workstation

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

Since the user partitions are not intended to support devices, set this option to ensure that users cannot attempt to create block or character special devices.

If a /home partition exists run the following command and verify that the nodev option is set on /home.

# mount | grep /home 
/dev/xvdf1 on /home type ext4 (rw,nodev,relatime,data=ordered)

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

# mount -o remount,nodev /home

Resizing filesystems is a common activity in cloud-hosted servers. Separate filesystem partitions may prevent successful resizing, or may require the installation of additional tools solely for the purpose of resizing operations. The use of these additional tools may introduce their own security considerations.

The actions in this recommendation refer to the /home partition, which is the default user partition that is defined in many distributions. If you have created other user partitions, it is recommended that the Remediation and Audit steps be applied to these partitions as well.