Title

The TOSS file system automounter must be disabled unless required. (Cat II impact)

Discussion

Automatically mounting file systems permits easy introduction of unknown devices, thereby facilitating malicious activity.

Check Content

Verify the operating system disables the ability to automount devices. Check to see if automounter service is active with the following command: Note: If the autofs service is not installed, this requirement is Not Applicable. $ sudo systemctl status autofs autofs.service - Automounts filesystems on demand Loaded: loaded (/usr/lib/systemd/system/autofs.service; disabled) Active: inactive (dead) If the "autofs" status is set to "active" and is not documented with the Information System Security Officer (ISSO) as an operational requirement, this is a finding.

Fix Text

Configure the operating system to disable the ability to automount devices. Turn off the automount service with the following commands: $ sudo systemctl stop autofs $ sudo systemctl disable autofs If "autofs" is required for Network File System (NFS), it must be documented with the ISSO.

Additional Identifiers

Rule ID: SV-252916r958498_rule

Vulnerability ID: V-252916

Group Title: SRG-OS-000114-GPOS-00059

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.