AlmaLinux OS 9 must not allow unattended or automatic logon via the graphical user interface.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-269216 | ALMA-09-015420 | SV-269216r1050098_rule | High |
| Description |
| Failure to restrict system access to authenticated users negatively impacts operating system security. |
| STIG | Date |
| CloudLinux AlmaLinux OS 9 Security Technical Implementation Guide | 2025-05-22 |
Details
| Check Text (C-73247r1049326_chk) |
| 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. |
| Fix Text (F-73148r1048025_fix) |
| 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 |