AlmaLinux OS 9 must not allow unattended or automatic logon via the graphical user interface.

Failure to restrict system access to authenticated users negatively impacts operating system security.

Note: This requirement assumes the use of the AlmaLinux OS 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 AlmaLinux OS 9 does not allow an unattended or automatic logon to the system via a graphical user interface.

Check for the value of the "AutomaticLoginEnable" in the "/etc/gdm/custom.conf" file with the following command:

$  grep -i automaticlogin /etc/gdm/custom.conf

[daemon] AutomaticLoginEnable=false

If the value of "AutomaticLoginEnable" is not set to "false", this is a finding.

Configure the GNOME desktop display manager to disable automatic login.

Set AutomaticLoginEnable to false in the [daemon] section in /etc/gdm/custom.conf. For example:

[daemon] AutomaticLoginEnable=false