STIGQter 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 prevent a user from overriding the disable-restart-buttons setting for the graphical user interface.

DISA Rule

SV-282717r1201644_rule

Vulnerability Number

V-282717

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

TOSS-05-000280

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

Configure TOSS 5 to prevent a user from overriding the disable-restart-buttons setting for graphical user interfaces.

Create a database to contain the systemwide graphical user logon settings (if it does not already exist) using the following command:

$ sudo touch /etc/dconf/db/local.d/locks/session

Add the following line to prevent nonprivileged users from modifying it:

/org/gnome/login-screen/disable-restart-buttons

Run the following command to update the database:

$ sudo dconf update

Check Contents

Verify TOSS 5 prevents a user from overriding the disable-restart-buttons setting for graphical user interfaces.

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.

Determine which profile the system database is using the following command:

$ sudo grep system-db /etc/dconf/profile/user

system-db:local

Check that graphical settings are locked from nonprivileged user modification using the following command:

Note: The example below is using the database "local" for the system, so the path is "/etc/dconf/db/local.d". This path must be modified if a database other than "local" is being used.

$ grep disable-restart-buttons /etc/dconf/db/local.d/locks/*

/org/gnome/login-screen/disable-restart-buttons

If the command does not return at least the example result, this is a finding.

Vulnerability Number

V-282717

Documentable

False

Rule Version

TOSS-05-000280

Severity Override Guidance

Verify TOSS 5 prevents a user from overriding the disable-restart-buttons setting for graphical user interfaces.

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.

Determine which profile the system database is using the following command:

$ sudo grep system-db /etc/dconf/profile/user

system-db:local

Check that graphical settings are locked from nonprivileged user modification using the following command:

Note: The example below is using the database "local" for the system, so the path is "/etc/dconf/db/local.d". This path must be modified if a database other than "local" is being used.

$ grep disable-restart-buttons /etc/dconf/db/local.d/locks/*

/org/gnome/login-screen/disable-restart-buttons

If the command does not return at least the example result, this is a finding.

Check Content Reference

M

Target Key

5738