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RHEL-09-271100 RHEL 9 must prevent a user from overriding the disable-restart-buttons setting for the graphical user interface.

DISA STIG library V2R10
All changes in this version
first version loaded CAT II

Maps to CM-6 via CCI-000366

Title

RHEL 9 must prevent a user from overriding the disable-restart-buttons setting for the graphical user interface.

Control

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.

Discussion

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.

Related controls

CCI-000366

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