Bug 1078885 (CVE-2014-0145)

Summary:	CVE-2014-0145 Qemu: prevent possible buffer overflows
Product:	[Other] Security Response	Reporter:	Prasad Pandit <ppandit>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	areis, gmollett, jkurik, jrusnack, juzhang, knoel, kwolf, mkenneth, mrezanin, mtosatti, pmatouse, rbalakri, rpacheco, security-response-team, stefanha
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:	2016-01-27 13:12:49 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:	1079321, 1079322, 1079323, 1079324, 1079325, 1086720, 1087112, 1087126, 1087140, 1108461
Bug Blocks:	1066967, 1086694

Description Prasad Pandit 2014-03-20 13:47:00 UTC

Qemu block drivers for DMG and QCOW version 2 format images are vulnerable to
possible buffer overflows caused by logic errors or non-sanitised inputs from
the image files. Such buffer overflows could lead to memory/image corruption
or crash in Qemu instances resulting in DoS.

An user able to alter the Qemu disk image files loaded by a guest could use
this flaw to crash the Qemu instance resulting in DoS or corrupt QEMU process
memory on the host, which could potentially result in arbitrary code execution
on the host with the privileges of the QEMU process.

Upstream fixes:
---------------
qcow2: Fix L1 allocation size in qcow2_snapshot_load_tmp
  -> http://git.qemu.org/?p=qemu.git;a=commit;h=c05e4667be91b46ab42b5a11babf8e84d476cc6b

dmg: prevent chunk buffer overflow
  -> http://git.qemu.org/?p=qemu.git;a=commit;h=f0dce23475b5af5da6b17b97c1765271307734b6

dmg: sanitize chunk length and sectorcount
  -> http://git.qemu.org/?p=qemu.git;a=commit;h=c165f7758009a4f793c1fc19ebb69cf55313450b

Comment 1 Prasad Pandit 2014-03-21 10:31:38 UTC

Statement:

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

This issue affects the versions of qemu-kvm package as shipped with Red Hat
Enterprise Linux 6.

Comment 5 Prasad Pandit 2014-03-25 13:25:45 UTC

Acknowledgement:

These issues were discovered by Stefan Hajnoczi of Red Hat Inc.

Comment 6 Prasad Pandit 2014-04-11 11:33:40 UTC

Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1086720]

Comment 10 errata-xmlrpc 2014-04-22 17:41:18 UTC

This issue has been addressed in following products:

  RHEV-H and Agents for RHEL-6

Via RHSA-2014:0421 https://rhn.redhat.com/errata/RHSA-2014-0421.html

Comment 11 errata-xmlrpc 2014-04-22 17:42:22 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2014:0420 https://rhn.redhat.com/errata/RHSA-2014-0420.html

Comment 12 errata-xmlrpc 2014-04-24 17:37:33 UTC

This issue has been addressed in following products:

  OpenStack 3 for RHEL 6

Via RHSA-2014:0435 https://rhn.redhat.com/errata/RHSA-2014-0435.html

Comment 13 errata-xmlrpc 2014-04-24 17:38:35 UTC

This issue has been addressed in following products:

  OpenStack 4 for RHEL 6

Via RHSA-2014:0434 https://rhn.redhat.com/errata/RHSA-2014-0434.html

Comment 14 Fedora Update System 2014-05-01 22:26:39 UTC

qemu-1.6.2-4.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 15 errata-xmlrpc 2014-06-09 14:37:38 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