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V-258029

CAT II (Medium)

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

Rule ID

SV-258029r1045109_rule

STIG

Red Hat Enterprise Linux 9 Security Technical Implementation Guide

Version

V2R8

CCIs

CCI-000366

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.

Check Content

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.

Fix Text

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