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 disable the ability of a user to restart the system from the login screen.

DISA Rule

SV-282716r1201128_rule

Vulnerability Number

V-282716

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

TOSS-05-000279

Severity

CAT II

CCI(s)

CCI-000366 - Implement the security configuration settings.

Weight

Fix Recommendation

Configure TOSS 5 to disable a user's ability to restart the system.

Add or update the [org/gnome/settings-daemon/] section of the /etc/dconf/db/local.d/00-security-settings" database file and add or update the following lines:

[org/gnome/login-screen]
disable-restart-buttons='true'

Then update the dconf system databases:

$ sudo dconf update

Check Contents

Verify TOSS 5 disables a user's ability to restart the system using the following command:

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

$ grep -R disable-restart-buttons /etc/dconf/db/*

/etc/dconf/db/distro.d/20-authselect:disable-restart-buttons='true'

If the "disable-restart-button" setting is not set to "true", is missing or commented out from the dconf database files, this is a finding.

Vulnerability Number

V-282716

Documentable

False

Rule Version

TOSS-05-000279

Severity Override Guidance

Check Content Reference

Target Key

5738