STIGQter: STIG Summary: Tri-Lab Operating System Stack (TOSS) 4 Security Technical Implementation Guide Version: 2 Release: 6 Benchmark Date: 01 Jul 2026:

The TOSS file system automounter must be disabled unless required.

DISA Rule

SV-252916r958498_rule

Vulnerability Number

V-252916

Group Title

SRG-OS-000114-GPOS-00059

Rule Version

TOSS-04-010050

Severity

CAT II

CCI(s)

CCI-000778 - Uniquely identify organization-defined devices and/or types of devices before establishing a local, remote, and/or network connection.

Weight

Fix Recommendation

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.

Check Contents

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.

Vulnerability Number

V-252916

Documentable

False

Rule Version

TOSS-04-010050

Severity Override Guidance

Check Content Reference

Target Key

5469