CVE-2009-3720 – expat: buffer over-read and crash on XML with malformed UTF-8 sequences

https://notcve.org/view.php?id=CVE-2009-3720

The updatePosition function in lib/xmltok_impl.c in libexpat in Expat 2.0.1, as used in Python, PyXML, w3c-libwww, and other software, allows context-dependent attackers to cause a denial of service (application crash) via an XML document with crafted UTF-8 sequences that trigger a buffer over-read, a different vulnerability than CVE-2009-2625. La función updatePosition en lib/xmltok_impl.c en libexpat en Expat v2.0.1, usado en Python, PyXML, w3c-libwww, ay otros programas, permite a atacantes dependientes de contexto, provocar una denegación de servicio (caída de aplicación) a través de un documento XML con una secuencia de caracteres UTF-8 manipulada que provoca un desbordamiento de búfer fuera de límite (over-read). Vulnerabilidad distinta de CVE-2009-2625. • http://expat.cvs.sourceforge.net/viewvc/expat/expat/lib/xmltok_impl.c?r1=1.13&r2=1.15&view=patch http://expat.cvs.sourceforge.net/viewvc/expat/expat/lib/xmltok_impl.c?view=log http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051228.html http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051247.html http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051367.html http://lists.fedoraproject.org/pipermail/package-announce/2010-November/051405. •