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Last updated: Sun May 19 03:27:34 EDT 2013

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National Cyber Awareness System

Vulnerability Summary for CVE-2009-3560

Original release date:12/04/2009
Last revised:09/22/2011
Source: US-CERT/NIST

Overview

The big2_toUtf8 function in lib/xmltok.c in libexpat in Expat 2.0.1, as used in the XML-Twig module for Perl, allows context-dependent attackers to cause a denial of service (application crash) via an XML document with malformed UTF-8 sequences that trigger a buffer over-read, related to the doProlog function in lib/xmlparse.c, a different vulnerability than CVE-2009-2625 and CVE-2009-3720.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score:5.0 (MEDIUM) (AV:N/AC:L/Au:N/C:N/I:N/A:P) (legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type:Allows disruption of serviceUnknown

References to Advisories, Solutions, and Tools

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External Source: CONFIRM
Name: https://bugzilla.redhat.com/show_bug.cgi?id=533174
Type: Patch Information
Hyperlink:https://bugzilla.redhat.com/show_bug.cgi?id=533174
External Source: CONFIRM
Name: http://expat.cvs.sourceforge.net/viewvc/expat/expat/lib/xmlparse.c?view=log#rev1.165
Type: Patch Information
Hyperlink:http://expat.cvs.sourceforge.net/viewvc/expat/expat/lib/xmlparse.c?view=log#rev1.165
External Source: FEDORA
Name: FEDORA-2009-12737
Hyperlink:https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00413.html
External Source: FEDORA
Name: FEDORA-2009-12716
Hyperlink:https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00394.html
External Source: FEDORA
Name: FEDORA-2009-12690
Hyperlink:https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00370.html
External Source: VUPEN
Name: ADV-2011-0359
Hyperlink:http://www.vupen.com/english/advisories/2011/0359
External Source: VUPEN
Name: ADV-2010-1107
Hyperlink:http://www.vupen.com/english/advisories/2010/1107
External Source: VUPEN
Name: ADV-2010-0896
Hyperlink:http://www.vupen.com/english/advisories/2010/0896
External Source: VUPEN
Name: ADV-2010-0528
Hyperlink:http://www.vupen.com/english/advisories/2010/0528
External Source: UBUNTU
Name: USN-890-6
Hyperlink:http://www.ubuntu.com/usn/USN-890-6
External Source: UBUNTU
Name: USN-890-1
Hyperlink:http://www.ubuntu.com/usn/USN-890-1
External Source: SECTRACK
Name: 1023278
Hyperlink:http://www.securitytracker.com/id?1023278
External Source: BID
Name: 37203
Hyperlink:http://www.securityfocus.com/bid/37203
External Source: REDHAT
Name: RHSA-2011:0896
Hyperlink:http://www.redhat.com/support/errata/RHSA-2011-0896.html
External Source: MANDRIVA
Name: MDVSA-2009:316
Hyperlink:http://www.mandriva.com/security/advisories?name=MDVSA-2009:316
External Source: DEBIAN
Name: DSA-1953
Hyperlink:http://www.debian.org/security/2009/dsa-1953
External Source: SUNALERT
Name: 273630
Hyperlink:http://sunsolve.sun.com/search/document.do?assetkey=1-66-273630-1
External Source: SLACKWARE
Name: SSA:2011-041-02
Hyperlink:http://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware-security.486026
External Source: SECUNIA
Name: 43300
Hyperlink:http://secunia.com/advisories/43300
External Source: SECUNIA
Name: 41701
Hyperlink:http://secunia.com/advisories/41701
External Source: SECUNIA
Name: 39478
Hyperlink:http://secunia.com/advisories/39478
External Source: SECUNIA
Name: 38834
Hyperlink:http://secunia.com/advisories/38834
External Source: SECUNIA
Name: 38832
Hyperlink:http://secunia.com/advisories/38832
External Source: SECUNIA
Name: 38794
Hyperlink:http://secunia.com/advisories/38794
External Source: SECUNIA
Name: 38231
Hyperlink:http://secunia.com/advisories/38231
External Source: SECUNIA
Name: 37537
Hyperlink:http://secunia.com/advisories/37537
External Source: OVAL
Name: oval:org.mitre.oval:def:6883
Hyperlink:http://oval.mitre.org/repository/data/getDef?id=oval:org.mitre.oval:def:6883
External Source: OVAL
Name: oval:org.mitre.oval:def:12942
Hyperlink:http://oval.mitre.org/repository/data/getDef?id=oval:org.mitre.oval:def:12942
External Source: OVAL
Name: oval:org.mitre.oval:def:10613
Hyperlink:http://oval.mitre.org/repository/data/getDef?id=oval:org.mitre.oval:def:10613
External Source: MLIST
Name: [expat-bugs] 20091108 [ expat-Bugs-2894085 ] expat: buffer over-read and crash in big2_toUtf8()
Hyperlink:http://mail.python.org/pipermail/expat-bugs/2009-November/002846.html
External Source: MLIST
Name: [security-announce] 20100303 VMSA-2010-0004 ESX Service Console and vMA third party updates
Hyperlink:http://lists.vmware.com/pipermail/security-announce/2010/000082.html
External Source: SUSE
Name: SUSE-SR:2010:014
Hyperlink:http://lists.opensuse.org/opensuse-security-announce/2010-08/msg00001.html
External Source: SUSE
Name: SUSE-SR:2010:013
Hyperlink:http://lists.opensuse.org/opensuse-security-announce/2010-06/msg00001.html
External Source: SUSE
Name: SUSE-SR:2010:012
Hyperlink:http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00002.html
External Source: SUSE
Name: SUSE-SR:2010:011
Hyperlink:http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00001.html
External Source: SUSE
Name: SUSE-SR:2010:001
Hyperlink:http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00007.html
External Source: CONFIRM
Name: http://expat.cvs.sourceforge.net/viewvc/expat/expat/lib/xmlparse.c?r1=1.164&r2=1.165
Hyperlink:http://expat.cvs.sourceforge.net/viewvc/expat/expat/lib/xmlparse.c?r1=1.164&r2=1.165

References to Check Content

Identifier:oval:org.mitre.oval:def:10613
Check System:http://oval.mitre.org/XMLSchema/oval-definitions-5
Hyperlink:http://oval.mitre.org/repository/data/DownloadDefinition?id=oval:org.mitre.oval:def:10613
Identifier:oval:org.mitre.oval:def:12942
Check System:http://oval.mitre.org/XMLSchema/oval-definitions-5
Hyperlink:http://oval.mitre.org/repository/data/DownloadDefinition?id=oval:org.mitre.oval:def:12942
Identifier:oval:org.mitre.oval:def:6883
Check System:http://oval.mitre.org/XMLSchema/oval-definitions-5
Hyperlink:http://oval.mitre.org/repository/data/DownloadDefinition?id=oval:org.mitre.oval:def:6883

Vulnerable software and versions

Nav control imageConfiguration 1
spacerNav control imageAND
spacerspacerNav control imageOR
spacerspacerline trunkNav control image* cpe:/a:james_clark:expat:2.0.1
spacerspacerNav control imageOR
spacerspacerspacerNav control imagecpe:/a:xmltwig:xml-twig_for_perl
* Denotes Vulnerable Software
* Changes related to vulnerability configurations

Technical Details

Vulnerability Type (View All)
CVE Standard Vulnerability Entry:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3560