cyberstrikeus Ensure noexec option set on removable media partitions
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.
Impact
None noted.
Audit Procedure
Command Line
# Run the following command and verify that the noexec option is set on all removable media partitions.
mount
Expected Result
Verify that the noexec option is set on all removable media partitions.
Remediation
Command Line
# 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
Not set by default.
References
- CIS Controls Version 7 - 2.6 Address unapproved software: Ensure that unauthorized software is either removed or the inventory is updated in a timely manner.
Profile
Level 1 - Server / Level 1 - Workstation, Assessment: Manual