1.1.3.2 Ensure nodev option set on /var partition

Information

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

Rationale:

Since the /var filesystem is not intended to support devices, set this option to ensure that users cannot create a block or character special devices in /var.

Solution

Edit the /etc/fstab file and add nodev to the fourth field (mounting options) for the /var partition.
Example:

<device> /var <fstype> defaults,rw,nosuid,nodev,noexec,relatime 0 0

Run the following command to remount /var with the configured options:

# mount -o remount /var

See Also

https://workbench.cisecurity.org/files/3939

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: b08e6d8b45e5af800ae1df8801b5138743f227f48c36866fe9355a72f1a38cd5