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RHEL-09-271095 RHEL 9 must disable the ability of a user to restart the system from the login screen.

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

Control

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. Verify RHEL 9 disables a user's ability to restart the system with the following command: $ gsettings get org.gnome.login-screen disable-restart-buttons true If "disable-restart-buttons" is "false", 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 disable a user's ability to restart the system. $ gsettings set org.gnome.login-screen disable-restart-buttons true Update the dconf system databases: $ sudo dconf update