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Description of problem:
When trying to use X forward to xguest_u user -> this is not possible

Version-Release number of selected component (if applicable):
selinux-policy-3.7.19-147.el6

How reproducible:
100%

Steps to Reproduce:
# be sure to have xorg-x11-xauth package installed
useradd -Z staff_u staff
useradd -Z xguest_u xguest
# now set passwords for staff and xguest users
ssh staff@localhost
export DISPLAY=0:0
ssh xguest@localhost
echo $DISPLAY
  
Actual results:
DISPLAY variable empty -> X11 forwarding not working

Expected results:
DISPLAY variable not empty and with correct content (i.e. localhost:10.0) -> X11 forwarding working

Additional info:

I don't think this is something we want to allow for the default xguest_u user.  He should not be sending his X Display to other machines.

(In reply to comment #1)
> I don't think this is something we want to allow for the default xguest_u user.
>  He should not be sending his X Display to other machines.

Actually I was thinking about a boolean but yes, it does not make sense to allow it for xguest_u.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHBA-2012-0780.html