1.1.2.2 Ensure nodev option set on /tmp partition

Information

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

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

Solution

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

Example:

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

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

# mount -o remount /tmp

See Also

https://workbench.cisecurity.org/files/4230

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-6, 800-53|CM-7, CSCv7|9.2

Plugin: Unix

Control ID: 6ed81d3c86ef374da59ab0c555f0eaab441a267c25e3a64fe8b3dfd2cb8f4e20