Bug 1066384 (CVE-2013-4541)

Summary:	CVE-2013-4541 qemu: usb: insufficient sanity checking of setup_index+setup_len in post_load
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:	abaron, amit.shah, aortega, apevec, areis, ayoung, bazulay, berrange, bsarathy, cfergeau, chrisw, cpelland, dblechte, dwmw2, ehabkost, gkotton, gleb, idith, iheim, itamar, jkurik, juzhang, knoel, lhh, markmc, minovotn, mkenneth, mrezanin, mst, mtosatti, pbonzini, pfrields, ppandit, qzhang, rbalakri, rbryant, rhod, rhos-maint, rjones, sclewis, scottt.tw, stefanha, virt-maint, virt-maint, yeylon
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2014-09-22 11:20:46 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:	1095743, 1095744, 1095746, 1095747, 1096117, 1102579, 1102580, 1110194, 1110284, 1110288, 1133850
Bug Blocks:	1036654, 1110626, 1133827

Description Petr Matousek 2014-02-18 10:13:12 UTC

s->setup_len and s->setup_index are fed into usb_packet_copy as
size/offset into s->data_buf, it's possible for invalid state to exploit
this to load arbitrary data.

An user able to alter the savevm data (either on the disk or over the wire
during migration) could use this flaw to to corrupt QEMU process memory on
the (destination) host, which could potentially result in arbitrary code
execution on the host with the privileges of the QEMU process.

Upstream fix:
-------------
  -> http://git.qemu.org/?p=qemu.git;a=commit;h=9f8e9895c504149d7048e9fc5eb5cbb34b16e49a

Comment 1 Petr Matousek 2014-02-18 11:31:32 UTC

Statement:

This issue does affect the versions of kvm package as shipped with
Red Hat Enterprise Linux 5.

This issue does affect the versions of qemu-kvm package as shipped with
Red Hat Enterprise Linux 7.

Comment 4 Prasad Pandit 2014-05-08 13:13:25 UTC

Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1095744]

Comment 6 Fedora Update System 2014-05-16 09:59:18 UTC

qemu-1.6.2-5.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 7 Qunfang Zhang 2014-05-29 02:44:25 UTC

Hi, Michael

Maybe we should keep the status as NEW instead of POST? It's a tracker for all the CVE-2013-4541 bugs in each product. 

Thanks,
Qunfang

Comment 8 Michael S. Tsirkin 2014-05-29 06:10:16 UTC

ok

Comment 10 errata-xmlrpc 2014-06-09 14:37:12 UTC

This issue has been addressed in following products:

  RHEV-H and Agents for RHEL-6

Via RHSA-2014:0674 https://rhn.redhat.com/errata/RHSA-2014-0674.html

Comment 11 Murray McAllister 2014-06-10 07:55:57 UTC

Acknowledgements:

The issues were discovered as part of the state loading code audit performed by Michael S. Tsirkin of Red Hat, Anthony Liguori and Michael Roth.

Comment 12 errata-xmlrpc 2014-06-10 20:19:11 UTC

This issue has been addressed in following products:

  RHEV-H and Agents for RHEL-6

Via RHSA-2014:0744 https://rhn.redhat.com/errata/RHSA-2014-0744.html

Comment 13 errata-xmlrpc 2014-06-10 20:20:00 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2014:0743 https://rhn.redhat.com/errata/RHSA-2014-0743.html

Comment 17 errata-xmlrpc 2014-07-23 16:16:08 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 7

Via RHSA-2014:0927 https://rhn.redhat.com/errata/RHSA-2014-0927.html

Comment 19 errata-xmlrpc 2014-07-24 15:39:08 UTC

This issue has been addressed in following products:

  OpenStack 4 for RHEL 6
  OpenStack 3 for RHEL 6

Via RHSA-2014:0888 https://rhn.redhat.com/errata/RHSA-2014-0888.html

Comment 21 errata-xmlrpc 2014-09-22 04:01:39 UTC

This issue has been addressed in the following products:

  OpenStack 5 for RHEL 7

Via RHSA-2014:1268 https://rhn.redhat.com/errata/RHSA-2014-1268.html