The multipart processor in ModSecurity before 2.5.9 allows remote attackers to cause a denial of service (crash) via a multipart form datapost request with a missing part header name, which triggers a NULL pointer dereference.
https://www.redhat.com/archives/fedora-package-announce/2009-March/msg00529.html
https://www.redhat.com/archives/fedora-package-announce/2009-March/msg00487.html
https://exchange.xforce.ibmcloud.com/vulnerabilities/49212
http://www.vupen.com/english/advisories/2009/0703
http://sourceforge.net/project/shownotes.php?release_id=667542&group_id=68846
http://security.gentoo.org/glsa/glsa-200907-02.xml
http://secunia.com/advisories/35687
http://secunia.com/advisories/34311
http://secunia.com/advisories/34256
http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00003.html