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Bug 818611

Summary:	X11 forwarding does not work for xguest_u
Product:	Red Hat Enterprise Linux 6	Reporter:	Miroslav Vadkerti <mvadkert>
Component:	selinux-policy	Assignee:	Miroslav Grepl <mgrepl>
Status:	CLOSED ERRATA	QA Contact:	Miroslav Vadkerti <mvadkert>
Severity:	medium	Docs Contact:
Priority:	high
Version:	6.3	CC:	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