CVE-2009-3560: Improper Restriction of Operations within the Bounds of a Memory Buffer

The big2toUtf8 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 doProlo...