1.1.13 Ensure /var/tmp partition includes the nodev option

Information

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

Rationale:

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

Solution

For existing /var/tmp partitions, edit the /etc/fstab file and add nodev to the fourth field (mounting options) of the /var/tmp entry. See the fstab(5) manual page for more information.
Run the following command to remount /var/tmp:

# mount -o remount,nodev /var/tmp

See Also

https://workbench.cisecurity.org/files/3393

Item Details

Category: ACCESS CONTROL, CONFIGURATION MANAGEMENT, IDENTIFICATION AND AUTHENTICATION, MEDIA PROTECTION

References: 800-53|AC-3, 800-53|CM-1, 800-53|CM-2, 800-53|CM-6, 800-53|CM-7, 800-53|IA-5, 800-53|MP-2, CSCv7|5.1

Plugin: Unix

Control ID: 8d4bc1471039562a2197a728a27b7274e9a68cf4577fbafc8030cd94177a541c