RHEL 9 must prevent a user from overriding the disable-restart-buttons setting for the graphical user interface.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-258030 | RHEL-09-271100 | SV-258030r1045112_rule | Medium |
| Description |
| A user who is at the console can reboot the system at the login screen. If restart or shutdown buttons are pressed at the login screen, this can create the risk of short-term loss of availability of systems due to reboot. |
| STIG | Date |
| Red Hat Enterprise Linux 9 Security Technical Implementation Guide | 2024-12-04 |
Details
| Check Text (C-61771r1045110_chk) |
| 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 prevents a user from overriding the disable-restart-buttons setting for graphical user interfaces. $ gsettings writable org.gnome.login-screen disable-restart-buttons false If "disable-restart-buttons" is writable and the result is "true", this is a finding. |
| Fix Text (F-61695r1045111_fix) |
| Configure RHEL 9 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) with 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 |