Vulnerability CVE-2009-3560
Published: 2009-12-04   Modified: 2012-02-13

Description:
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.

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
James clark -> Expat 

 References:
http://expat.cvs.sourceforge.net/viewvc/expat/expat/lib/xmlparse.c?r1=1.164&r2=1.165
http://expat.cvs.sourceforge.net/viewvc/expat/expat/lib/xmlparse.c?view=log#rev1.165
http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00007.html
http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00002.html
http://lists.opensuse.org/opensuse-security-announce/2010-06/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2010-08/msg00001.html
http://lists.vmware.com/pipermail/security-announce/2010/000082.html
http://mail.python.org/pipermail/expat-bugs/2009-November/002846.html
http://marc.info/?l=bugtraq&m=130168502603566&w=2
http://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware-security.486026
http://sunsolve.sun.com/search/document.do?assetkey=1-66-273630-1
http://www.debian.org/security/2009/dsa-1953
http://www.mandriva.com/security/advisories?name=MDVSA-2009:316
http://www.redhat.com/support/errata/RHSA-2011-0896.html
http://www.securityfocus.com/bid/37203
http://www.securitytracker.com/id?1023278
http://www.ubuntu.com/usn/USN-890-1
http://www.ubuntu.com/usn/USN-890-6
http://www.vupen.com/english/advisories/2010/0528
http://www.vupen.com/english/advisories/2010/0896
http://www.vupen.com/english/advisories/2010/1107
http://www.vupen.com/english/advisories/2011/0359
https://bugzilla.redhat.com/show_bug.cgi?id=533174
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10613
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12942
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6883
https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00370.html
https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00394.html
https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00413.html
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