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RHEL 9 must disable the ability of a user to restart the system from the login screen.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-258029 | RHEL-09-271095 | SV-258029r991589_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 | 2024-06-04 |
Details
| Check Text ( C-61770r926072_chk ) |
|---|
| Verify RHEL 9 disables a user's ability to restart the system with the following command: Note: This requirement assumes the use of the RHEL 9 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. |
| Fix Text (F-61694r943058_fix) |
|---|
| Configure RHEL 9 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 |