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AUSCERT External Security Bulletin Redistribution
ESB-2009.1260.2
Security Vulnerabilities in libxml2 Library Related to Parsing of Element
Declarations, Notation and Enumeration Attribute Types may
Lead to a Denial of Service (DoS)
30 September 2009
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AusCERT Security Bulletin Summary
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Product: libxml2
Publisher: Sun Microsystems
Operating System: Solaris
OpenSolaris
Impact/Access: Denial of Service -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2009-2416 CVE-2009-2414
Reference: ESB-2009.1165.2
Original Bulletin:
http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-66-266688-1
Revision History: September 30 2009: Patches released for Solaris 9 and 10
September 7 2009: Initial Release
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Solution Type: Sun Alert
Solution 266688 : Security Vulnerabilities in libxml2 Library
Related to Parsing of Element Declarations, Notation and Enumeration
Attribute Types may Lead to a Denial of Service (DoS)
Bug ID: 6872373
Product:
Solaris 9 Operating System
Solaris 10 Operating System
OpenSolaris
Date of Preliminary Release: 03-Sep-2009
Date of Resolved Release: 29-Sep-2009
SA Document Body
Security vulnerabilities in the libxml2 (see libxml(3)):
1. Impact
Security vulnerabilities in the libxml2 (see libxml(3)) related to
parsing of Element declarations, Notation and Enumeration attribute
types, may allow a local or remote unprivileged user who provides a
specially crafted XML file to cause a Denial of Service (DoS) via an
application crash to the application that is using the libxml2
library. The precise impact will vary depending on the application.
These issues are also described in the following documents:
CVE-2009-2414 at:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2414
CVE-2009-2416 at:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2416
2. Contributing Factors
These issues can occur in the following releases:
SPARC Platform
* Solaris 9 without patch 114014-23
* Solaris 10 without patch 125731-05
* OpenSolaris based upon builds snv_01 through snv_122
x86 Platform
* Solaris 9 without patch 114015-23
* Solaris 10 without patch 125732-05
* OpenSolaris based upon builds snv_01 through snv_122
Note 1: Solaris 8 does not bundle libxml2 therefore no applications
supplied with Solaris 8 use libxml2. However, libxml2 version 2.4.12
is included on the Solaris 8 OS Software Supplement CD for use with
SunVTS 5.1. which is not affected by this issue.
Note 2: OpenSolaris distributions may include additional bug fixes
above and beyond the build from which it was derived. To determine
the base build of OpenSolaris, the following command can be used:
$ uname -v
snv_86
3. Symptoms
If the described issues have been exploited, the application which
makes use of the libxml2 library to process the crafted XML file may
no longer be available. Depending on the system configuration, core
files may be created and application crashes may be recorded in system
logs.
4. Workaround
There is no workaround for these issues.
5. Resolution
These issues are addressed in the following releases:
SPARC Platform
* Solaris 9 with patch 114014-23 or later
* Solaris 10 with patch 125731-05 or later
* OpenSolaris based upon builds snv_123 or later
x86 Platform
* Solaris 9 with patch 114015-23 or later
* Solaris 10 with patch 125732-05 or later
* OpenSolaris based upon builds snv_123 or later
For more information on Security Sun Alerts, see Technical
Instruction ID 213557.
This Sun Alert notification is being provided to you on an "AS IS"
basis. This Sun Alert notification may contain information provided by
third parties. The issues described in this Sun Alert notification may
or may not impact your system(s). Sun makes no representations,
warranties, or guarantees as to the information contained herein. ANY
AND ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
NON-INFRINGEMENT, ARE HEREBY DISCLAIMED. BY ACCESSING THIS DOCUMENT
YOU ACKNOWLEDGE THAT SUN SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES THAT ARISE
OUT OF YOUR USE OR FAILURE TO USE THE INFORMATION CONTAINED HEREIN.
This Sun Alert notification contains Sun proprietary and confidential
information. It is being provided to you pursuant to the provisions of
your agreement to purchase services from Sun, or, if you do not have
such an agreement, the Sun.com Terms of Use. This Sun Alert
notification may only be used for the purposes contemplated by these
agreements.
Copyright 2000-2009 Sun Microsystems, Inc., 4150 Network Circle, Santa
Clara, CA 95054 U.S.A. All rights reserved
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