Bug 835863 (CVE-2012-2807)

Summary:	CVE-2012-2807 libxml2 (64-bit): Multiple integer overflows, leading to DoS or possibly other unspecified impact
Product:	[Other] Security Response	Reporter:	Jan Lieskovsky <jlieskov>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	a9016009, ccoleman, c.david86, drizt72, erik-fedora, fedora-mingw, mmcgrath, mnewsome, ohudlick, paul, rjones, teger, usurse, vcizek, veillard
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:	2021-10-19 21:55:00 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:	843739, 843740, 843741, 843742, 843743, 858914, 858915
Bug Blocks:	835864

Description Jan Lieskovsky 2012-06-27 10:29:19 UTC

Common Vulnerabilities and Exposures assigned an identifier CVE-2012-2807 to the following vulnerability:

Multiple integer overflows in libxml2, as used in Google Chrome before 20.0.1132.43, on 64-bit Linux platforms allow remote attackers to cause a denial of service or possibly have unspecified other impact via unknown vectors.

References:
[1] http://code.google.com/p/chromium/issues/detail?id=129930
[2] http://googlechromereleases.blogspot.com/2012/06/stable-channel-update_26.html

Comment 2 Jan Lieskovsky 2012-06-28 12:08:51 UTC

Relevant Google Chrome patch:
[3] http://git.chromium.org/gitweb/?p=chromium/src.git;a=commitdiff;h=f183580d61c054f7f6bb35cfe29e1b342390fbeb

Comment 4 Daniel Veillard 2012-07-18 10:26:45 UTC

Okay, i finally pushed a patch upstream that I think should backport
rather easily

http://git.gnome.org/browse/libxml2/commit/?id=459eeb9dc752d5185f57ff6b135027f11981a626

that one

http://git.gnome.org/browse/libxml2/commit/?id=4f9fdc709c4861c390cd84e2ed1fd878b3442e28

should also be applied in the errata to avoid similar problem elsewhere.
Somehow that's not a complete fix but that's the most immediate and
simple way to stop the given problem. I'm still working on a (rather
large and intrusive) set of patches for upstream but I would not suggest
to push that in RHEL. For fedora I may be tempted to rebase once a new
libxml2 version is out

Daniel

Comment 6 Huzaifa S. Sidhpurwala 2012-07-27 07:08:17 UTC

The above patches, described in comment #4 seems to solve the problem here. libxml2 no longer crashes with them.

For Red Hat Enterprise Linux use case, we may however require few more patches from upstream.

Comment 9 Huzaifa S. Sidhpurwala 2012-07-27 08:42:59 UTC

Created libxml2 tracking bugs for this issue

Affects: fedora-all [bug 843743]

Comment 14 teger 2012-09-04 21:37:12 UTC

This has been reported over 2 months ago with a possible fix coming in a little over a month.  Is there any plan of action to fix libxml2 vulnerabilities?

Primarily this is a bump to put in back on someones to do list.
Thank you

Comment 16 errata-xmlrpc 2012-09-18 17:21:34 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 5
  Red Hat Enterprise Linux 6

Via RHSA-2012:1288 https://rhn.redhat.com/errata/RHSA-2012-1288.html

Comment 17 Huzaifa S. Sidhpurwala 2012-09-20 02:42:09 UTC

Created mingw32-libxml2 tracking bugs for this issue

Affects: epel-5 [bug 858914]
Affects: fedora-all [bug 858915]

Comment 20 Huzaifa S. Sidhpurwala 2013-01-04 10:35:49 UTC

This flaw affects x86_64 version of libxml2 only, however mingw32-libxml2 is only shipped as x86 (32-bit) and therefore it is not affected.


Statement:

This issue affected the version of libxml2 as shipped with Red Hat Enterprise Linux 5 and 6 has been addressed via RHSA-2012:1288. This issue does not affect the version of mingw32-libxml2 as shipped with Red Hat Enterprise Linux 6.