STIGQter: STIG Summary: Tri-Lab Operating System Stack (TOSS) 5 Security Technical Implementation Guide Version: 1 Release: 1 Benchmark Date: 26 Mar 2026:

TOSS 5 must not allow unattended or automatic logon via the graphical user interface.

DISA Rule

SV-282759r1201257_rule

Vulnerability Number

V-282759

Group Title

SRG-OS-000480-GPOS-00229

Rule Version

TOSS-05-000268

Severity

CAT I

CCI(s)

CCI-000366 - Implement the security configuration settings.

Weight

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

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Verify TOSS 5 does not allow an unattended or automatic logon to the system via a graphical user interface.

Note: This requirement assumes the use of the TOSS 5 default graphical user interface, the GNOME desktop environment. If the system does not have any graphical user interface installed, this requirement is not applicable.

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

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

[daemon]
AutomaticLoginEnable=false

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

Vulnerability Number

V-282759

Documentable

False

Rule Version

TOSS-05-000268

Severity Override Guidance

Check Content Reference

Target Key

5738