Bug 1145667 (CVE-2014-3657)

Summary:	CVE-2014-3657 libvirt: domain_conf: domain deadlock DoS
Product:	[Other] Security Response	Reporter:	Petr Matousek <pmatouse>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	aavati, ajia, berrange, chazlett, dyuan, eblake, hannsj_uhl, jdenemar, mzhan, nlevinki, phrdina, pkrempa, rbalakri, rfortier, security-response-team, shaines, sisharma, smohan, ssaha, vbellur, virt-bugs
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:	A denial of service flaw was found in the way libvirt's virConnectListAllDomains() function computed the number of used domains. A remote attacker able to establish a read-only connection to libvirtd could use this flaw to make any domain operations within libvirt unresponsive.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2014-11-18 21:49:51 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:	1145669, 1145670, 1145671, 1160277, 1160824
Bug Blocks:	1143903, 1145679, 1160286

Description Petr Matousek 2014-09-23 13:17:07 UTC

If public api virConnectListAllDomains() with second parameter
set to NULL to get only the number of domains is used, it will
lock out all other operations with domains.

A remote attacker able to establish a read-only connection to
libvirtd could use this flaw to cause libvirtd denial of
service.

Introduced by:
http://libvirt.org/git/?p=libvirt.git;a=commit;h=2c680804

Comment 2 Petr Matousek 2014-09-23 13:30:21 UTC

Statement:

This issue does not affect the versions of libvirt packages as shipped with
Red Hat Enterprise Linux 5.

This issue does affect the versions of libvirt packages as shipped with Red Hat
Enterprise Linux 6 and 7. Future updates may address this issue in the
respective Red Hat Enterprise Linux releases.

Comment 3 Martin Prpič 2014-09-30 15:37:52 UTC

IssueDescription:

A denial of service flaw was found in the way libvirt's virConnectListAllDomains() function computed the number of used domains. A remote attacker able to establish a read-only connection to libvirtd could use this flaw to make any domain operations within libvirt unresponsive.

Comment 4 Petr Matousek 2014-10-01 10:05:02 UTC

Upstream commit:

http://libvirt.org/git/?p=libvirt.git;a=commit;h=fc22b2e74890873848b43fffae43025d22053669

Comment 5 errata-xmlrpc 2014-10-01 19:11:40 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2014:1352 https://rhn.redhat.com/errata/RHSA-2014-1352.html

Comment 7 Petr Matousek 2014-11-05 17:33:08 UTC

Created libvirt tracking bugs for this issue:

Affects: fedora-all [bug 1160824]

Comment 8 errata-xmlrpc 2014-11-18 18:09:14 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2014:1873 https://rhn.redhat.com/errata/RHSA-2014-1873.html

Comment 9 Fedora Update System 2014-11-22 12:37:14 UTC

libvirt-1.1.3.8-1.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.