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.
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://marc.info/?l=bugtraq&m=130168502603566&w=2
https://bugzilla.redhat.com/show_bug.cgi?id=533174
http://secunia.com/advisories/37537
http://secunia.com/advisories/38231
http://secunia.com/advisories/38794
http://secunia.com/advisories/38832
http://secunia.com/advisories/38834
http://secunia.com/advisories/39478
http://secunia.com/advisories/41701
http://secunia.com/advisories/43300
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
http://sunsolve.sun.com/search/document.do?assetkey=1-66-273630-1
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
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.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
Published: 2009-12-04
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P
Severity: Medium