cyberstrikeus 1.1.19 Ensure noexec option set on removable media partitions (Not Scored)
Profile Applicability
- Level 1 - Server
- Level 1 - Workstation
Description
The noexec mount option specifies that the filesystem cannot contain executable binaries.
Rationale
Setting this option on a file system prevents users from executing programs from the removable media. This deters users from being able to introduce potentially malicious software on the system.
Audit Procedure
# Run the following command and verify that the noexec option is set on all
# removable media partitions:
mount
Expected Result
All removable media partitions should have the noexec option set.
Remediation
# Edit the /etc/fstab file and add noexec 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.
Default Value
By default, the noexec option is not set on removable media partitions.
References
- CIS Ubuntu Linux 14.04 LTS Benchmark v2.1.0
- CIS Controls: 8 Malware Defenses
Profile
- Level 1