File system automounter must be disabled unless required.

From Red Hat Enterprise Linux 7 Security Technical Implementation Guide

Associated with: CCI-000366 CCI-000778 CCI-001958

SV-86609r1_rule File system automounter must be disabled unless required.

Vulnerability discussion

Automatically mounting file systems permits easy introduction of unknown devices, thereby facilitating malicious activity.Satisfies: SRG-OS-000114-GPOS-00059, SRG-OS-000378-GPOS-00163, SRG-OS-000480-GPOS-00227

Check content

Verify the operating system disables the ability to automount devices. Check to see if 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 the operating system to disable the ability to automount devices. Turn off the automount service with the following command: # systemctl disable autofs If "autofs" is required for Network File System (NFS), it must be documented with the ISSO.

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