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Bug 1176176 - (CVE-2014-8136) CVE-2014-8136 libvirt: local denial of service in qemu/qemu_driver.c
CVE-2014-8136 libvirt: local denial of service in qemu/qemu_driver.c
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
low Severity low
: ---
: ---
Assigned To: Red Hat Product Security
impact=low,public=20141217,reported=2...
: Security
Depends On: 1176179 1184407
Blocks: 1176178
  Show dependency tree / graph
 
Reported: 2014-12-19 10:54 EST by Vasyl Kaigorodov
Modified: 2016-11-15 00:21 EST (History)
26 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
It was found that QEMU's qemuDomainMigratePerform() and qemuDomainMigrateFinish2() functions did not correctly perform a domain unlock on a failed ACL check. A remote attacker able to establish a connection to libvirtd could use this flaw to lock a domain of a more privileged user, causing a denial of service.
Story Points: ---
Clone Of:
Environment:
Last Closed: 2015-08-19 18:28:56 EDT
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2015:0323 normal SHIPPED_LIVE Low: libvirt security, bug fix, and enhancement update 2015-03-05 07:10:54 EST

  None (edit)
Description Vasyl Kaigorodov 2014-12-19 10:54:27 EST 
Common Vulnerabilities and Exposures assigned an identifier CVE-2014-8136 to
the following vulnerability:

Name: CVE-2014-8136
URL: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-8136
Assigned: 20141010
Reference: http://secunia.com/advisories/61111

The (1) qemuDomainMigratePerform and (2) qemuDomainMigrateFinish2
functions in qemu/qemu_driver.c in libvirt do not unlock the domain
when an ACL check fails, which allow local users to cause a denial of
service via unspecified vectors.

Upstream commit that addresses this:
http://libvirt.org/git/?p=libvirt.git;a=commit;h=2bdcd29c713dfedd813c89f56ae98f6f3898313d
Comment 1 Vasyl Kaigorodov 2014-12-19 10:57:24 EST 
Created libvirt tracking bugs for this issue:

Affects: fedora-all [bug 1176179]
Comment 4 Eric Blake 2015-01-14 13:52:18 EST 
See also the upstream announcement:
http://security.libvirt.org/2014/0010.html
Comment 6 Fedora Update System 2015-02-14 22:06:57 EST 
libvirt-1.2.9.2-1.fc21 has been pushed to the Fedora 21 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 7 Fedora Update System 2015-02-17 03:10:28 EST 
libvirt-1.1.3.9-1.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 8 errata-xmlrpc 2015-03-05 02:48:35 EST 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2015:0323 https://rhn.redhat.com/errata/RHSA-2015-0323.html
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