1.1.2.4.2 Ensure nodev option set on /var partition

Information

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

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

- IF - a separate partition exists for /var

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/benchmarks/15289

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: 31fb5683b8df1a3c7890f7b38faa139648ed18839c08011e60cad39384c8ba8f