advserver.exe in Advanced Web Server (AdvServer) Professional 1.030000 allows remote attackers to cause a denial of service via multiple HTTP requests containing a single carriage return/line feed (CRLF) sequence.
http://www.securityfocus.com/bid/5080
http://www.iss.net/security_center/static/9410.php
http://online.securityfocus.com/archive/1/278181
http://elaboration.8bit.co.uk/projects/texts/advisories/AdvServer.DoS.txt