From: Robert Buchholz <rbu@gentoo.org.>
To: gentoo-announce@gentoo.org
Subject: [ GLSA 200812-06 ] libxml2: Multiple vulnerabilities
Date: Tue, 2 Dec 2008 18:42:03 +0100
User-Agent: KMail/1.9.9
Cc: bugtraq@securityfocus.com, full-disclosure@lists.grok.org.uk,
security-alerts@linuxsecurity.com
MIME-Version: 1.0
Content-Type: multipart/signed;
boundary="nextPart2101547.t6ZDUdiL0j";
protocol="application/pgp-signature";
micalg=pgp-sha1
Content-Transfer-Encoding: 7bit
Message-Id: <200812021842.06701.rbu@gentoo.org.>
X-Virus-Scanned: antivirus-gw at tyumen.ru
--nextPart2101547.t6ZDUdiL0j
Content-Type: text/plain;
charset="us-ascii"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 200812-06
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal
Title: libxml2: Multiple vulnerabilities
Date: December 02, 2008
Bugs: #234099, #237806, #239346, #245960
ID: 200812-06
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Synopsis
========
Multiple vulnerabilities in libxml2 might lead to execution of
arbitrary code or Denial of Service.
Background
==========
libxml2 is the XML (eXtended Markup Language) C parser and toolkit
initially developed for the Gnome project.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-libs/libxml2 < 2.7.2-r1 >= 2.7.2-r1
Description
===========
Multiple vulnerabilities were reported in libxml2:
* Andreas Solberg reported that libxml2 does not properly detect
recursion during entity expansion in an attribute value
(CVE-2008-3281).
* A heap-based buffer overflow has been reported in the
xmlParseAttValueComplex() function in parser.c (CVE-2008-3529).
* Christian Weiske reported that predefined entity definitions in
entities are not properly handled (CVE-2008-4409).
* Drew Yao of Apple Product Security reported an integer overflow in
the xmlBufferResize() function that can lead to an infinite loop
(CVE-2008-4225).
* Drew Yao of Apple Product Security reported an integer overflow in
the xmlSAX2Characters() function leading to a memory corruption
(CVE-2008-4226).
Impact
======
A remote attacker could entice a user or automated system to open a
specially crafted XML document with an application using libxml2,
possibly resulting in the exeution of arbitrary code or a high CPU and
memory consumption.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All libxml2 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/libxml2-2.7.2-r1"
References
==========
[ 1 ] CVE-2008-3281
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3281
[ 2 ] CVE-2008-3529
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3529
[ 3 ] CVE-2008-4409
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4409
[ 4 ] CVE-2008-4225
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4225
[ 5 ] CVE-2008-4226
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4226
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200812-06.xml
Concerns?
=========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.
License
=======
Copyright 2008 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.5
--nextPart2101547.t6ZDUdiL0j
Content-Type: application/pgp-signature; name=signature.asc
Content-Description: This is a digitally signed message part.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.9 (GNU/Linux)
iQIcBAABAgAGBQJJNXNuAAoJECaaHo/OfoM53eMP/28r9f/cQd5zcmZMmPPy1H6t
EBwqIXEO9oIe4gNVCqhTLyjLbyk4nsoWEemKJklSWuvxQBlZJZowLsnoBVjDe/GU
8ZkqdLYYeKH2DnEuZRIAeI3HnaVcztsd53iffuSs+AHp1Lg7f7igIWoKmX4qzgMP
Lr06f8/4swh1scq2blUfhz5rKcSjW63Peberkvb+7KK7gossjYxksHc3+BuyToTE
ayft/lEVUt2/uDvAw7T6jZ/JMu/4PXZOZjo+DFsilfus8cAdt7PdR2whHn8+MKEo
8qfPlqWIDhZ9P9qQ6hSZSQQMfI92fepHe7Aqi4aEBbxspOxcD+ADpxU3O1OEEE48
jTdkPqLMPkCS8V7ApslAXK9Xdi/KnQiOa+h/+2WzdiPRzM5HTimE7QJHLnpdLWUN
K4gVxfos8SidaZ/LAYltyMWZLAjS26mM1CPKbvOiGAp+uMWrP+fTxRMrLRgJHdw4
SPP8isFNRgWr/yNuEJCoqIAHXomDXWwUel0RuHKnZjscPvsJrv385LjC13zG6Sz7
kMIM5qOK6ug/RPd4TUqUp+K8AeGEPhvrvQRKw1kF/pN+VQCATaHvlDQPwSD61C+2
z55Ckb5wPBuzZMcJrYRWw3tmC1tsx10v6+K9WdV2k2XQ9GNR5i4I3syQpw/iqsIj
Oh4aq7tMH5K8Vz5bYQr8
=FGwd
-----END PGP SIGNATURE-----
--nextPart2101547.t6ZDUdiL0j--
