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V-252916

CAT II (Medium)

The TOSS file system automounter must be disabled.

Rule ID

SV-252916r1262349_rule

STIG

Tri-Lab Operating System Stack (TOSS) 4 Security Technical Implementation Guide

Version

V2R7

CCIs

CCI-000778

Discussion

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

Check Content

Note: If the "autofs" service is not installed, this requirement is Not Applicable.

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", 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