Bug 835863 (CVE-2012-2807) - CVE-2012-2807 libxml2 (64-bit): Multiple integer overflows, leading to DoS or possibly other unspecified impact
Summary: CVE-2012-2807 libxml2 (64-bit): Multiple integer overflows, leading to DoS or...
Alias: CVE-2012-2807
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 843739 843740 843741 843742 843743 858914 858915
Blocks: 835864
TreeView+ depends on / blocked
Reported: 2012-06-27 10:29 UTC by Jan Lieskovsky
Modified: 2021-10-19 21:55 UTC (History)
15 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2021-10-19 21:55:00 UTC

Attachments (Terms of Use)

System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2012:1288 0 normal SHIPPED_LIVE Moderate: libxml2 security update 2012-09-18 21:19:07 UTC

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.

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

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


that one


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


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.


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.

Note You need to log in before you can comment on or make changes to this bug.