The ModSecurity module before 2.7.4 for the Apache HTTP Server allows remote attackers to cause a denial of service (NULL pointer dereference, process crash, and disk consumption) via a POST request with a large body and a crafted Content-Type header.
https://github.com/SpiderLabs/ModSecurity/commit/0840b13612a0b7ef1ce7441cf811dcfc6b463fba
https://bugzilla.redhat.com/show_bug.cgi?id=967615
http://sourceforge.net/mailarchive/message.php?msg_id=30900019
http://lists.opensuse.org/opensuse-updates/2013-08/msg00031.html
http://lists.opensuse.org/opensuse-updates/2013-08/msg00025.html
http://lists.opensuse.org/opensuse-updates/2013-08/msg00020.html