Title

SLEM 5 must disable the file system automounter unless required. (Cat II impact)

Discussion

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

Check Content

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

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.

Additional Identifiers

Rule ID: SV-261286r996338_rule

Vulnerability ID: V-261286

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.