Bug 818611

Summary: X11 forwarding does not work for xguest_u
Product: Red Hat Enterprise Linux 6 Reporter: Miroslav Vadkerti <mvadkert>
Component: selinux-policyAssignee: Miroslav Grepl <mgrepl>
Status: CLOSED ERRATA QA Contact: Miroslav Vadkerti <mvadkert>
Severity: medium Docs Contact:
Priority: high    
Version: 6.3CC: dwalsh, mgrepl, mmalik, plautrba
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: selinux-policy-3.7.19-149.el6 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2012-06-20 12:34:11 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Miroslav Vadkerti 2012-05-03 14:09:08 UTC 
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:
Comment 1 Daniel Walsh 2012-05-03 14:30:04 UTC 
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.
Comment 4 Miroslav Grepl 2012-05-03 20:45:06 UTC 
(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.
Comment 26 errata-xmlrpc 2012-06-20 12:34:11 UTC 
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