Vipul Razor Agents (razor-agents) before 2.70 allows remote attackers to cause a denial of service via (1) certain "unusual HTML messages" or (2) "certain malformed headers" such as Content-Type.
http://www.securityfocus.com/bid/13984
http://www.novell.com/linux/security/advisories/2005_35_razor_agents.html
http://www.debian.org/security/2005/dsa-738
http://sourceforge.net/mailarchive/forum.php?thread_id=7520323&forum_id=4259