Bug 1048628

Summary:	CVE-2013-6456 libvirt: unsafe usage of paths under /proc/$PID/root [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Murray McAllister <mmcallis>
Component:	libvirt	Assignee:	Libvirt Maintainers <libvirt-maint>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	20	CC:	berrange, clalancette, eblake, itamar, jforbes, jyang, laine, libvirt-maint, vdanen, veillard, virt-maint
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	libvirt-1.1.3.4-1.fc20	Doc Type:	Release Note
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2014-02-28 18:31:57 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1048627

Description Murray McAllister 2014-01-05 23:29:51 UTC

This is an automatically created tracking bug!  It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of Fedora.

For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.

For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs

When creating a Bodhi update request, please use the bodhi submission link
noted in the next comment(s).  This will include the bug IDs of this
tracking bug as well as the relevant top-level CVE bugs.

Please also mention the CVE IDs being fixed in the RPM changelog and the
Bodhi notes field when available.

Please note: this issue affects multiple supported versions of Fedora.
Only one tracking bug has been filed; please ensure that it is only closed
when all affected versions are fixed.

[bug automatically created by: add-tracking-bugs]

Comment 1 Murray McAllister 2014-01-05 23:30:07 UTC

Please use the following update submission link to create the Bodhi
request for this issue as it contains the top-level parent bug(s) as well
as this tracking bug.  This will ensure that all associated bugs get
updated when new packages are pushed to stable.

Please also ensure that the "Close bugs when update is stable" option
remains checked.

Bodhi update submission link:
https://admin.fedoraproject.org/updates/new/?type_=security&bugs=1048627,1048628

Comment 2 Eric Blake 2014-02-18 20:23:36 UTC

v1.1.3-maint is now ready for a release:

commit a3a3cfcb7c400bcde198b5b929ff2d4f889dee78
Author: Daniel P. Berrange <berrange>
Date:   Thu Jan 30 17:58:36 2014 +0000

    CVE-2013-6456: Avoid unsafe use of /proc/$PID/root in LXC hotunplug code
    
    Rewrite multiple hotunplug functions to to use the
    virProcessRunInMountNamespace helper. This avoids
    risk of a malicious guest replacing /dev with an absolute
    symlink, tricking the driver into changing the host OS
    filesystem.
    
    Signed-off-by: Daniel P. Berrange <berrange>
    (cherry picked from commit 5fc590ad9f4071350a8df4d567ba88baacc8334d)

Comment 3 Fedora Update System 2014-02-19 01:00:25 UTC

libvirt-1.1.3.4-1.fc20 has been submitted as an update for Fedora 20.
https://admin.fedoraproject.org/updates/libvirt-1.1.3.4-1.fc20

Comment 4 Fedora Update System 2014-02-22 00:57:32 UTC

Package libvirt-1.1.3.4-1.fc20:
* should fix your issue,
* was pushed to the Fedora 20 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing libvirt-1.1.3.4-1.fc20'
as soon as you are able to.
Please go to the following url:
https://admin.fedoraproject.org/updates/FEDORA-2014-2864/libvirt-1.1.3.4-1.fc20
then log in and leave karma (feedback).

Comment 5 Fedora Update System 2014-02-28 18:31:57 UTC

libvirt-1.1.3.4-1.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.