Apache HTTP Server Vulnerability - 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.