1.1.18 Ensure nosuid option set on removable media partitions (Not Scored)
Profile Applicability
Level 1 - Server Level 1 - Workstation
Description
The nosuid
mount option specifies that the filesystem cannot contain setuid
files.
Rationale
Setting this option on a file system prevents users from introducing privileged programs onto the system and allowing non-root users to execute them.
Audit
Run the following command and verify that the nosuid
option is set on all removable media partitions.
# mount
Remediation
Edit the /etc/fstab
file and add nosuid
to the fourth field (mounting options) of all removable media partitions. Look for entries that have mount points that contain words such as floppy or cdrom. See the fstab(5)
manual page for more information.