Bug 1078201 – CVE-2014-0142 qemu: crash by possible division by zero

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Bug 1078201 - (CVE-2014-0142) CVE-2014-0142 qemu: crash by possible division by zero

Summary:	CVE-2014-0142 qemu: crash by possible division by zero

Status:	CLOSED ERRATA

Aliases:	CVE-2014-0142

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

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

URL:
Whiteboard:	impact=low,public=20140326,reported=2...
Keywords:	Security

Depends On:	1079311 1079312 1079313 1079314 1079315 1086710 1087112 1087126 1087140 1108461
Blocks:	1066967 1086694
	Show dependency tree / graph

Reported:	2014-03-19 07:40 EDT by Prasad J Pandit
Modified:	2016-01-28 04:32 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 08:06:08 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 2014-03-19 07:40:32 EDT

Qemu block drivers for parallels image and formats used by Bocsh are vulnerable
to a crash caused by possible division by zero error, in seek_to_sector routine.
It could occur if 's->tracks' & 's->extent_size' fields are 0. These are used
to derive 'index' and 'offset' values in seek_to_sector() routine.

An user able to alter the Qemu disk image could use this flaw to crash the
Qemu instance resulting in DoS.

Upstream fixes:
---------------
parallels: Sanity check for s->tracks
  -> http://git.qemu.org/?p=qemu.git;a=commit;h=9302e863aa8baa5d932fc078967050c055fa1a7f

bochs: Check extent_size header field
  -> http://git.qemu.org/?p=qemu.git;a=commit;h=8e53abbc20d08ae3ec30c2054e1161314ad9501d

Comment 1 Prasad J Pandit 2014-03-21 06:27:24 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 09:08:15 EDT

Acknowledgement:

These issues were discovered by Kevin Wolf of Red Hat Inc.

Comment 6 Prasad J Pandit 2014-04-11 07:20:45 EDT

Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1086710]

Comment 10 errata-xmlrpc 2014-04-22 13:40:52 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 13:41:44 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 13:37:04 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 13:38:07 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 18:26:13 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 10:37:22 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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