SLEM 5 must disable the file system automounter unless required.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-261286	SLEM-05-231050	SV-261286r996338_rule		Medium

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

STIG	Date
SUSE Linux Enterprise Micro (SLEM) 5 Security Technical Implementation Guide	2024-06-04

Details

Check Text ( C-65015r996336_chk )
Verify SLEM 5 disables the ability to automount devices. Verify the automounter service is installed with the following command: > sudo zypper se autofs If it is installed, verify the automounter service is active with the following command: > 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.

Check Text ( C-65015r996336_chk )

Verify SLEM 5 disables the ability to automount devices.

Verify the automounter service is installed with the following command:

> sudo zypper se autofs

If it is installed, verify the automounter service is active with the following command:

> 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 (F-64923r996337_fix)
Configure SLEM 5 to disable the ability to automount devices. Turn off the automount service with the following command: > sudo systemctl stop autofs > sudo systemctl disable autofs If "autofs" is required for Network File System (NFS), it must be documented with the ISSO.