Bug 1078212 (CVE-2014-0148)

Summary:	CVE-2014-0148 Qemu: vhdx: bounds checking for block_size and logical_sector_size
Product:	[Other] Security Response	Reporter:	Prasad Pandit <ppandit>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	areis, gmollett, knoel, kwolf, mrezanin, mtosatti, pmatouse, rbalakri, 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 13:07:14 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:	1079343, 1079344, 1079346, 1086712, 1087112, 1087126, 1087140, 1108461
Bug Blocks:	1066967, 1086694

Description Prasad Pandit 2014-03-19 12:02:20 UTC

Qemu block driver for Hyper-V VHDX Images is vulnerable to infinite loops and
other potential issues when calculating BAT entries, due to missing bounds
checks for block_size and logical_sector_size variables. These are used to
derive other fields like 'sectors_per_block' etc.

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

Upstream fix:
-------------
vhdx: Bounds checking for block_size and logical_sector_size
  -> http://git.qemu.org/?p=qemu.git;a=commit;h=1d7678dec4761acdc43439da6ceda41a703ba1a6

Comment 1 Prasad Pandit 2014-03-21 10:34:13 UTC

Statement:

This issue does not affect 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 4 Prasad Pandit 2014-03-25 13:15:06 UTC

Acknowledgement:

This issue was discovered by Jeff Cody of Red Hat Inc.

Comment 5 Prasad Pandit 2014-04-11 11:23:35 UTC

Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1086712]

Comment 9 errata-xmlrpc 2014-04-22 17:40:57 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 10 errata-xmlrpc 2014-04-22 17:41:50 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 11 errata-xmlrpc 2014-04-24 17:37:10 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 12 errata-xmlrpc 2014-04-24 17:38:11 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 13 Fedora Update System 2014-05-01 22:26:57 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 14 errata-xmlrpc 2014-06-09 14:37:26 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