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V-216309

CAT II (Medium)

All .Xauthority files must have mode 0600 or less permissive.

Rule ID

SV-216309r959010_rule

STIG

Solaris 11 SPARC Security Technical Implementation Guide

Version

V3R5

CCIs

CCI-000366 CCI-000225

Discussion

.Xauthority files ensure the user is authorized to access the specific X Windows host. Excessive permissions may permit unauthorized modification of these files, which could lead to Denial of Service to authorized access or allow unauthorized access to be obtained.

Check Content

If X Display Manager (XDM) is not used on the system, this is not applicable.

Determine if XDM is running. 

Procedure:
# ps -ef | grep xdm

Check the file permissions for the .Xauthority files in the home directories of users of X. Procedure:
# cd ~<X user>
# ls -lL .Xauthority

If the file mode is more permissive than 0600, this is finding.

Fix Text

Change the mode of the .Xauthority files.

Procedure:
# chmod 0600 .Xauthority