The SUSE operating system must not allow unattended or automatic logon via the graphical user interface (GUI).

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-235031	SLES-15-040430	SV-235031r877377_rule		High

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

STIG	Date
SUSE Linux Enterprise Server 15 Security Technical Implementation Guide	2023-03-08

Details

Check Text ( C-38219r619362_chk )
Note: If a graphical user interface is not installed, this requirement is Not Applicable. Verify the SUSE operating system does not allow unattended or automatic logon via the GUI. Check that unattended or automatic login is disabled with the following commands: > grep -i ^DISPLAYMANAGER_AUTOLOGIN /etc/sysconfig/displaymanager DISPLAYMANAGER_AUTOLOGIN="" > grep -i ^DISPLAYMANAGER_PASSWORD_LESS_LOGIN /etc/sysconfig/displaymanager DISPLAYMANAGER_PASSWORD_LESS_LOGIN="no" If the "DISPLAYMANAGER_AUTOLOGIN" parameter includes a username or the "DISPLAYMANAGER_PASSWORD_LESS_LOGIN" If parameter is not set to "no", this is a finding.

Check Text ( C-38219r619362_chk )

Note: If a graphical user interface is not installed, this requirement is Not Applicable.

Verify the SUSE operating system does not allow unattended or automatic logon via the GUI.

Check that unattended or automatic login is disabled with the following commands:

> grep -i ^DISPLAYMANAGER_AUTOLOGIN /etc/sysconfig/displaymanager

DISPLAYMANAGER_AUTOLOGIN=""

> grep -i ^DISPLAYMANAGER_PASSWORD_LESS_LOGIN /etc/sysconfig/displaymanager

DISPLAYMANAGER_PASSWORD_LESS_LOGIN="no"

If the "DISPLAYMANAGER_AUTOLOGIN" parameter includes a username or the
"DISPLAYMANAGER_PASSWORD_LESS_LOGIN"
If parameter is not set to "no", this is a finding.

Fix Text (F-38182r619363_fix)
Note: If a graphical user interface is not installed, this requirement is Not Applicable. Configure the SUSE operating system GUI to not allow unattended or automatic logon to the system. Add or edit the following lines in the "/etc/sysconfig/displaymanager" configuration file: DISPLAYMANAGER_AUTOLOGIN="" DISPLAYMANAGER_PASSWORD_LESS_LOGIN="no"