(Red Hat Issues Fix for libxml2) Google Chrome Multiple Flaws Let Remote Users Execute Arbitrary Code
SecurityTracker Alert ID: 1026653|
SecurityTracker URL: http://securitytracker.com/id/1026653
(Links to External Site)
Date: Feb 8 2012
Execution of arbitrary code via network, User access via network|
Fix Available: Yes Vendor Confirmed: Yes |
Version(s): prior to 16.0.912.75|
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 by one vulnerability.|
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.
Specially crafted animation frames can trigger a use-after-free memory error [CVE-2011-3921]. Boris Zbarsky of Mozilla reported this vulnerability.
A remote user can trigger a heap overflow in libxml [CVE-2011-3919]. Juri Aedla reported this vulnerability.
A remote user can trigger a stack overflow in glyph handling [CVE-2011-3922]. The Google Chrome Security Team (Cris Neckar) reported this vulnerability.
A remote user can trigger a use-after-free in Safe Browsing navigation [CVE-2011-3925]. Chamal de Silva reported this vulnerability.
A remote user can create HTML that, when loaded by the target user, will execute arbitrary code on the target user's system.|
Red Hat has issued a fix for libxml2.|
The Red Hat advisory is available at:
Access control error, Boundary error|
Linux (Red Hat Enterprise)|
This archive entry is a follow-up to the message listed below.|
Source Message Contents
Date: Wed, 8 Feb 2012 20:12:25 +0000|
Subject: [RHSA-2012:0104-01] Important: libxml2 security update
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Red Hat Security Advisory
Synopsis: Important: libxml2 security update
Advisory ID: RHSA-2012:0104-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-0104.html
Issue date: 2012-02-08
CVE Names: CVE-2011-3919
Updated libxml2 packages that fix one security issue are now available for
Red Hat Enterprise Linux 5.6 Extended Update Support.
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:
Red Hat Enterprise Linux EUS (v. 5.6 server) - i386, ia64, ppc, s390x, x86_64
The libxml2 library is a development toolbox providing the implementation
of various XML standards.
A heap-based buffer overflow flaw was found in the way libxml2 decoded
entity references with long names. 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
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.
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
5. Bugs fixed (http://bugzilla.redhat.com/):
771896 - CVE-2011-3919 libxml2: Heap-based buffer overflow when decoding an entity reference with a long name
6. Package List:
Red Hat Enterprise Linux EUS (v. 5.6 server):
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
The Red Hat security contact is <email@example.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2012 Red Hat, Inc.
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