STIGQter: STIG Summary: Red Hat Enterprise Linux 9 Security Technical Implementation Guide Version: 2 Release: 9 Benchmark Date: 01 Jul 2026:

RHEL 9 file system automount function must be disabled unless required.

DISA Rule

SV-257849r1044928_rule

Vulnerability Number

V-257849

Group Title

SRG-OS-000114-GPOS-00059

Rule Version

RHEL-09-231040

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.
• CCI-001958 - Authenticate organization-defined devices and/or types of devices before establishing a local, remote, and/or network connection.

Weight

10

Fix Recommendation

Configure RHEL 9 to disable the ability to automount devices.

The autofs service can be disabled with the following command:

$ sudo systemctl mask --now autofs.service

Check Contents

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

Verify that the RHEL 9 file system automount function has been disabled with the following command:

$ systemctl is-enabled autofs

masked

If the returned value is not "masked", "disabled", or "Failed to get unit file state for autofs.service for autofs" and is not documented as an operational requirement with the information system security officer (ISSO), this is a finding.

Vulnerability Number

V-257849

Documentable

False

Rule Version

RHEL-09-231040

Severity Override Guidance

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

Verify that the RHEL 9 file system automount function has been disabled with the following command:

$ systemctl is-enabled autofs

masked

If the returned value is not "masked", "disabled", or "Failed to get unit file state for autofs.service for autofs" and is not documented as an operational requirement with the information system security officer (ISSO), this is a finding.

Check Content Reference

M

Target Key

5551