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

RHEL 9 must not allow unattended or automatic logon via the graphical user interface.

DISA Rule

SV-258018r1045090_rule

Vulnerability Number

V-258018

Group Title

SRG-OS-000480-GPOS-00229

Rule Version

RHEL-09-271040

Severity

CAT I

CCI(s)

Weight

10

Fix Recommendation

Configure the GNOME desktop display manager to disable automatic login.

Set AutomaticLoginEnable to false in the [daemon] section in /etc/gdm/custom.conf. For example:

[daemon]
AutomaticLoginEnable=false

Check Contents

Note: This requirement assumes the use of the RHEL 9 default graphical user interface, the GNOME desktop environment. If the system does not have any graphical user interface installed, this requirement is Not Applicable.

Verify RHEL 9 does not allow an unattended or automatic logon to the system via a graphical user interface.

Check for the value of the "AutomaticLoginEnable" in the "/etc/gdm/custom.conf" file with the following command:

$ grep -i automaticlogin /etc/gdm/custom.conf

AutomaticLoginEnable=false

If the value of "AutomaticLoginEnable" is not set to "false", this is a finding.

Vulnerability Number

V-258018

Documentable

False

Rule Version

RHEL-09-271040

Severity Override Guidance

Note: This requirement assumes the use of the RHEL 9 default graphical user interface, the GNOME desktop environment. If the system does not have any graphical user interface installed, this requirement is Not Applicable.

Verify RHEL 9 does not allow an unattended or automatic logon to the system via a graphical user interface.

Check for the value of the "AutomaticLoginEnable" in the "/etc/gdm/custom.conf" file with the following command:

$ grep -i automaticlogin /etc/gdm/custom.conf

AutomaticLoginEnable=false

If the value of "AutomaticLoginEnable" is not set to "false", this is a finding.

Check Content Reference

M

Target Key

5551