An X server must have none of the following options enabled: -ac, -core (except for debugging purposes), or -nolock.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-1022	GEN000000-LNX00380	SV-37217r2_rule	ECSC-1	Medium

Description
These options will detract from the security of the Xwindows system.

STIG	Date
Red Hat Enterprise Linux 5 Security Technical Implementation Guide	2014-07-02

Details

Check Text ( None )
None

Fix Text (F-31162r1_fix)
Disable the unwanted options: Procedure: For gdm: Remove the -ac, -core and -nolock options by creating a "command" entry in the /etc/gdm/custom.conf file with the options removed. For Xwindows started by xinit: Create or modify the .xserverrc script in the users home directory to remove the -ac, -core and -nolock options from the exec /usr/bin/X command.