1.1.2.3.3 Ensure nosuid option set on /home partition

Information

The nosuid mount option specifies that the filesystem cannot contain setuid files.

Since the /home filesystem is only intended for user file storage, set this option to ensure that users cannot create setuid files in /home

Solution

- IF - a separate partition exists for /home

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

Example:

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

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

# mount -o remount /home

See Also

https://workbench.cisecurity.org/benchmarks/15286

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: 58520826cf9c4f8220acc1a39329aca3df9f5b629dae3a0c9e4c1a4feda2e56c