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Category:   Application (Generic)  >   Libxml2 Vendors:   xmlsoft.org
(Red Hat Issues Fix libxml2) Google Chrome Multiple Flaws Let Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1027821
SecurityTracker URL:  http://securitytracker.com/id/1027821
CVE Reference:   CVE-2012-5134   (Links to External Site)
Date:  Nov 29 2012
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   Several vulnerabilities were reported in Google Chrome. A remote user can cause arbitrary code to be executed on the target user's system. libxml2 is affected.

A remote user can create specially crafted content that, when loaded by the target user, will execute arbitrary code on the target system. The code will run with the privileges of the target user.

An out-of-bounds read may occur in Skia [CVE-2012-5130]. Atte Kettunen of OUSPG reported this vulnerability.

A memory corruption error may occur in the Apple OSX driver for Intel GPUs [CVE-2012-5131]. Justin Drake reported this vulnerability.

A browser crash may occur when processing chunked encoding [CVE-2012-5132]. Attila Szasz reported this vulnerability.

A use-after-free may occur in SVG filters [CVE-2012-5133]. miaubiz reported this vulnerability.

A buffer underflow may occur in libxml [CVE-2012-5134]. Juri Aedla of the Google Chrome Security Team reported this vulnerability.

A use-after-free may occur when printing [CVE-2012-5135]. Fermin Serna of the Google Security Team reported this vulnerability.

A bad cast may occur in input element handling [CVE-2012-5136]. Inferno of the Google Chrome Security Team reported this vulnerability.

Impact:   A remote user can create content that, when loaded by the target user, will execute arbitrary code on the target user's system.
Solution:   Red Hat has issued a fix for CVE-2012-5134 for libxml2.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2012-1512.html

Cause:   Access control error, Boundary error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  5, 6

Message History:   This archive entry is a follow-up to the message listed below.
Nov 27 2012 Google Chrome Multiple Flaws Let Remote Users Execute Arbitrary Code



 Source Message Contents

Subject:  [RHSA-2012:1512-01] Important: libxml2 security update

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

=====================================================================
                   Red Hat Security Advisory

Synopsis:          Important: libxml2 security update
Advisory ID:       RHSA-2012:1512-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2012-1512.html
Issue date:        2012-11-29
CVE Names:         CVE-2012-5134 
=====================================================================

1. Summary:

Updated libxml2 packages that fix one security issue are now available for
Red Hat Enterprise Linux 5 and 6.

The Red Hat Security Response Team has rated this update as having
important security impact. A Common Vulnerability Scoring System (CVSS)
base score, which gives a detailed severity rating, is available from the
CVE link in the References section.

2. Relevant releases/architectures:

RHEL Desktop Workstation (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) - x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

3. Description:

The libxml2 library is a development toolbox providing the implementation
of various XML standards.

A heap-based buffer underflow flaw was found in the way libxml2 decoded
certain entities. A remote attacker could provide a specially-crafted XML
file that, when opened in an application linked against libxml2, would
cause the application to crash or, potentially, execute arbitrary code with
the privileges of the user running the application. (CVE-2012-5134)

All users of libxml2 are advised to upgrade to these updated packages,
which contain a backported patch to correct this issue. The desktop must be
restarted (log out, then log back in) for this update to take effect.

4. Solution:

Before applying this update, make sure all previously-released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/knowledge/articles/11258

5. Bugs fixed (http://bugzilla.redhat.com/):

880466 - CVE-2012-5134 libxml2: Heap-buffer-underflow in xmlParseAttValueComplex

6. Package List:

Red Hat Enterprise Linux Desktop (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/libxml2-2.6.26-2.1.15.el5_8.6.src.rpm

i386:
libxml2-2.6.26-2.1.15.el5_8.6.i386.rpm
libxml2-debuginfo-2.6.26-2.1.15.el5_8.6.i386.rpm
libxml2-python-2.6.26-2.1.15.el5_8.6.i386.rpm

x86_64:
libxml2-2.6.26-2.1.15.el5_8.6.i386.rpm
libxml2-2.6.26-2.1.15.el5_8.6.x86_64.rpm
libxml2-debuginfo-2.6.26-2.1.15.el5_8.6.i386.rpm
libxml2-debuginfo-2.6.26-2.1.15.el5_8.6.x86_64.rpm
libxml2-python-2.6.26-2.1.15.el5_8.6.x86_64.rpm

RHEL Desktop Workstation (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/libxml2-2.6.26-2.1.15.el5_8.6.src.rpm

i386:
libxml2-debuginfo-2.6.26-2.1.15.el5_8.6.i386.rpm
libxml2-devel-2.6.26-2.1.15.el5_8.6.i386.rpm

x86_64:
libxml2-debuginfo-2.6.26-2.1.15.el5_8.6.i386.rpm
libxml2-debuginfo-2.6.26-2.1.15.el5_8.6.x86_64.rpm
libxml2-devel-2.6.26-2.1.15.el5_8.6.i386.rpm
libxml2-devel-2.6.26-2.1.15.el5_8.6.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/libxml2-2.6.26-2.1.15.el5_8.6.src.rpm

i386:
libxml2-2.6.26-2.1.15.el5_8.6.i386.rpm
libxml2-debuginfo-2.6.26-2.1.15.el5_8.6.i386.rpm
libxml2-devel-2.6.26-2.1.15.el5_8.6.i386.rpm
libxml2-python-2.6.26-2.1.15.el5_8.6.i386.rpm

ia64:
libxml2-2.6.26-2.1.15.el5_8.6.i386.rpm
libxml2-2.6.26-2.1.15.el5_8.6.ia64.rpm
libxml2-debuginfo-2.6.26-2.1.15.el5_8.6.i386.rpm
libxml2-debuginfo-2.6.26-2.1.15.el5_8.6.ia64.rpm
libxml2-devel-2.6.26-2.1.15.el5_8.6.ia64.rpm
libxml2-python-2.6.26-2.1.15.el5_8.6.ia64.rpm

ppc:
libxml2-2.6.26-2.1.15.el5_8.6.ppc.rpm
libxml2-2.6.26-2.1.15.el5_8.6.ppc64.rpm
libxml2-debuginfo-2.6.26-2.1.15.el5_8.6.ppc.rpm
libxml2-debuginfo-2.6.26-2.1.15.el5_8.6.ppc64.rpm
libxml2-devel-2.6.26-2.1.15.el5_8.6.ppc.rpm
libxml2-devel-2.6.26-2.1.15.el5_8.6.ppc64.rpm
libxml2-python-2.6.26-2.1.15.el5_8.6.ppc.rpm

s390x:
libxml2-2.6.26-2.1.15.el5_8.6.s390.rpm
libxml2-2.6.26-2.1.15.el5_8.6.s390x.rpm
libxml2-debuginfo-2.6.26-2.1.15.el5_8.6.s390.rpm
libxml2-debuginfo-2.6.26-2.1.15.el5_8.6.s390x.rpm
libxml2-devel-2.6.26-2.1.15.el5_8.6.s390.rpm
libxml2-devel-2.6.26-2.1.15.el5_8.6.s390x.rpm
libxml2-python-2.6.26-2.1.15.el5_8.6.s390x.rpm

x86_64:
libxml2-2.6.26-2.1.15.el5_8.6.i386.rpm
libxml2-2.6.26-2.1.15.el5_8.6.x86_64.rpm
libxml2-debuginfo-2.6.26-2.1.15.el5_8.6.i386.rpm
libxml2-debuginfo-2.6.26-2.1.15.el5_8.6.x86_64.rpm
libxml2-devel-2.6.26-2.1.15.el5_8.6.i386.rpm
libxml2-devel-2.6.26-2.1.15.el5_8.6.x86_64.rpm
libxml2-python-2.6.26-2.1.15.el5_8.6.x86_64.rpm

Red Hat Enterprise Linux Desktop (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/libxml2-2.7.6-8.el6_3.4.src.rpm

i386:
libxml2-2.7.6-8.el6_3.4.i686.rpm
libxml2-debuginfo-2.7.6-8.el6_3.4.i686.rpm
libxml2-python-2.7.6-8.el6_3.4.i686.rpm

x86_64:
libxml2-2.7.6-8.el6_3.4.i686.rpm
libxml2-2.7.6-8.el6_3.4.x86_64.rpm
libxml2-debuginfo-2.7.6-8.el6_3.4.i686.rpm
libxml2-debuginfo-2.7.6-8.el6_3.4.x86_64.rpm
libxml2-python-2.7.6-8.el6_3.4.x86_64.rpm

Red Hat Enterprise Linux Desktop Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/libxml2-2.7.6-8.el6_3.4.src.rpm

i386:
libxml2-debuginfo-2.7.6-8.el6_3.4.i686.rpm
libxml2-devel-2.7.6-8.el6_3.4.i686.rpm
libxml2-static-2.7.6-8.el6_3.4.i686.rpm

x86_64:
libxml2-debuginfo-2.7.6-8.el6_3.4.i686.rpm
libxml2-debuginfo-2.7.6-8.el6_3.4.x86_64.rpm
libxml2-devel-2.7.6-8.el6_3.4.i686.rpm
libxml2-devel-2.7.6-8.el6_3.4.x86_64.rpm
libxml2-static-2.7.6-8.el6_3.4.x86_64.rpm

Red Hat Enterprise Linux HPC Node (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/libxml2-2.7.6-8.el6_3.4.src.rpm

x86_64:
libxml2-2.7.6-8.el6_3.4.i686.rpm
libxml2-2.7.6-8.el6_3.4.x86_64.rpm
libxml2-debuginfo-2.7.6-8.el6_3.4.i686.rpm
libxml2-debuginfo-2.7.6-8.el6_3.4.x86_64.rpm
libxml2-python-2.7.6-8.el6_3.4.x86_64.rpm

Red Hat Enterprise Linux HPC Node Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/libxml2-2.7.6-8.el6_3.4.src.rpm

x86_64:
libxml2-debuginfo-2.7.6-8.el6_3.4.i686.rpm
libxml2-debuginfo-2.7.6-8.el6_3.4.x86_64.rpm
libxml2-devel-2.7.6-8.el6_3.4.i686.rpm
libxml2-devel-2.7.6-8.el6_3.4.x86_64.rpm
libxml2-static-2.7.6-8.el6_3.4.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/libxml2-2.7.6-8.el6_3.4.src.rpm

i386:
libxml2-2.7.6-8.el6_3.4.i686.rpm
libxml2-debuginfo-2.7.6-8.el6_3.4.i686.rpm
libxml2-devel-2.7.6-8.el6_3.4.i686.rpm
libxml2-python-2.7.6-8.el6_3.4.i686.rpm

ppc64:
libxml2-2.7.6-8.el6_3.4.ppc.rpm
libxml2-2.7.6-8.el6_3.4.ppc64.rpm
libxml2-debuginfo-2.7.6-8.el6_3.4.ppc.rpm
libxml2-debuginfo-2.7.6-8.el6_3.4.ppc64.rpm
libxml2-devel-2.7.6-8.el6_3.4.ppc.rpm
libxml2-devel-2.7.6-8.el6_3.4.ppc64.rpm
libxml2-python-2.7.6-8.el6_3.4.ppc64.rpm

s390x:
libxml2-2.7.6-8.el6_3.4.s390.rpm
libxml2-2.7.6-8.el6_3.4.s390x.rpm
libxml2-debuginfo-2.7.6-8.el6_3.4.s390.rpm
libxml2-debuginfo-2.7.6-8.el6_3.4.s390x.rpm
libxml2-devel-2.7.6-8.el6_3.4.s390.rpm
libxml2-devel-2.7.6-8.el6_3.4.s390x.rpm
libxml2-python-2.7.6-8.el6_3.4.s390x.rpm

x86_64:
libxml2-2.7.6-8.el6_3.4.i686.rpm
libxml2-2.7.6-8.el6_3.4.x86_64.rpm
libxml2-debuginfo-2.7.6-8.el6_3.4.i686.rpm
libxml2-debuginfo-2.7.6-8.el6_3.4.x86_64.rpm
libxml2-devel-2.7.6-8.el6_3.4.i686.rpm
libxml2-devel-2.7.6-8.el6_3.4.x86_64.rpm
libxml2-python-2.7.6-8.el6_3.4.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/libxml2-2.7.6-8.el6_3.4.src.rpm

i386:
libxml2-debuginfo-2.7.6-8.el6_3.4.i686.rpm
libxml2-static-2.7.6-8.el6_3.4.i686.rpm

ppc64:
libxml2-debuginfo-2.7.6-8.el6_3.4.ppc64.rpm
libxml2-static-2.7.6-8.el6_3.4.ppc64.rpm

s390x:
libxml2-debuginfo-2.7.6-8.el6_3.4.s390x.rpm
libxml2-static-2.7.6-8.el6_3.4.s390x.rpm

x86_64:
libxml2-debuginfo-2.7.6-8.el6_3.4.x86_64.rpm
libxml2-static-2.7.6-8.el6_3.4.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/libxml2-2.7.6-8.el6_3.4.src.rpm

i386:
libxml2-2.7.6-8.el6_3.4.i686.rpm
libxml2-debuginfo-2.7.6-8.el6_3.4.i686.rpm
libxml2-devel-2.7.6-8.el6_3.4.i686.rpm
libxml2-python-2.7.6-8.el6_3.4.i686.rpm

x86_64:
libxml2-2.7.6-8.el6_3.4.i686.rpm
libxml2-2.7.6-8.el6_3.4.x86_64.rpm
libxml2-debuginfo-2.7.6-8.el6_3.4.i686.rpm
libxml2-debuginfo-2.7.6-8.el6_3.4.x86_64.rpm
libxml2-devel-2.7.6-8.el6_3.4.i686.rpm
libxml2-devel-2.7.6-8.el6_3.4.x86_64.rpm
libxml2-python-2.7.6-8.el6_3.4.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/libxml2-2.7.6-8.el6_3.4.src.rpm

i386:
libxml2-debuginfo-2.7.6-8.el6_3.4.i686.rpm
libxml2-static-2.7.6-8.el6_3.4.i686.rpm

x86_64:
libxml2-debuginfo-2.7.6-8.el6_3.4.x86_64.rpm
libxml2-static-2.7.6-8.el6_3.4.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2012-5134.html
https://access.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is <secalert@redhat.com>.  More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2012 Red Hat, Inc.
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