Bug 1078885 – CVE-2014-0145 Qemu: prevent possible buffer overflows

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Bug 1078885 - (CVE-2014-0145) CVE-2014-0145 Qemu: prevent possible buffer overflows

Summary:	CVE-2014-0145 Qemu: prevent possible buffer overflows

Status:	CLOSED ERRATA

Aliases:	CVE-2014-0145

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=moderate,public=20140326,repor...
Keywords:	Security

Depends On:	1079321 1079322 1079323 1079324 1079325 1086720 1087112 1087126 1087140 1108461
Blocks:	1066967 1086694
	Show dependency tree / graph

Reported:	2014-03-20 09:47 EDT by Prasad J Pandit
Modified:	2016-01-28 04:33 EST (History)
CC List:	15 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2016-01-27 08:12:49 EST
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2014:0420	normal	SHIPPED_LIVE	Moderate: qemu-kvm security update	2014-04-22 17:39:52 EDT
Red Hat Product Errata	RHSA-2014:0421	normal	SHIPPED_LIVE	Moderate: qemu-kvm-rhev security update	2014-04-22 17:39:32 EDT
Red Hat Product Errata	RHSA-2014:0434	normal	SHIPPED_LIVE	Moderate: qemu-kvm-rhev security update	2014-04-24 17:35:56 EDT
Red Hat Product Errata	RHSA-2014:0435	normal	SHIPPED_LIVE	Moderate: qemu-kvm-rhev security update	2014-04-24 17:35:47 EDT
Red Hat Product Errata	RHSA-2014:0674	normal	SHIPPED_LIVE	Moderate: rhev-hypervisor6 3.4.0 security, bug fix, and enhancement update	2014-06-09 14:35:12 EDT

Groups: None (edit)

Description Prasad J Pandit 2014-03-20 09:47:00 EDT

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 J Pandit 2014-03-21 06:31:38 EDT

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 J Pandit 2014-03-25 09:25:45 EDT

Acknowledgement:

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

Comment 6 Prasad J Pandit 2014-04-11 07:33:40 EDT

Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1086720]

Comment 10 errata-xmlrpc 2014-04-22 13:41:18 EDT

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 13:42:22 EDT

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 13:37:33 EDT

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 13:38:35 EDT

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 18:26:39 EDT

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 10:37:38 EDT

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

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