The X server must have the correct options enabled.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-1021	GEN000000-LNX00360	SV-37207r1_rule		Medium

Description
Without the correct options enabled, the Xwindows system would be less secure and there would be no screen timeout.

STIG	Date
Red Hat Enterprise Linux 5 Security Technical Implementation Guide	2016-07-22

Details

Check Text ( None )
None

Fix Text (F-31154r1_fix)
Enable the following options: -audit (at level 4), -auth and -s with 15 minutes as the timeout value. Procedure for gdm: Edit /etc/gdm/custom.conf and add the following: [server-Standard] name=Standard server command=/usr/bin/Xorg -br -audit 4 -s 15 chooser=false handled=true flexible=true priority=0 Procedure for xinit: Edit or create a .xserverrc file in the users home directory containing the startup script for xinit. This script must have an exec line with at least these options: exec /usr/bin/X -audit 4 -s 15 -auth & The is created using the "xauth" command and is customarily located in the users home directory with the name ".Xauthority".

Fix Text (F-31154r1_fix)

Enable the following options: -audit (at level 4), -auth and -s with 15 minutes as the timeout value.

Procedure for gdm:
Edit /etc/gdm/custom.conf and add the following:
[server-Standard]
name=Standard server
command=/usr/bin/Xorg -br -audit 4 -s 15
chooser=false
handled=true
flexible=true
priority=0

Procedure for xinit:
Edit or create a .xserverrc file in the users home directory containing the startup script for xinit.
This script must have an exec line with at least these options:

exec /usr/bin/X -audit 4 -s 15 -auth &

The is created using the "xauth" command and is customarily located in the users home directory with the name ".Xauthority".