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V-216312

CAT II (Medium)

.Xauthority or X*.hosts (or equivalent) file(s) must be used to restrict access to the X server.

Rule ID

SV-216312r959010_rule

STIG

Solaris 11 SPARC Security Technical Implementation Guide

Version

V3R5

CCIs

CCI-000297 CCI-000366

Discussion

If access to the X server is not restricted, a user's X session may be compromised.

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

Determine if xauth is being used. 

Procedure:
# xauth 
xauth> list

If the above command sequence does not show any host other than the localhost, then xauth is not being used.

Search the system for an X*.hosts files, where * is a display number that may be used to limit X window connections. 

If no files are found, X*.hosts files are not being used. 

If the X*.hosts files contain any unauthorized hosts, this is a finding.

If both xauth and X*.hosts files are not being used, this is a finding.

Fix Text

Create an X*.hosts file, where * is a display number that may be used to limit X window connections. 

Add the list of authorized X clients to the file.