BadBlue server allows remote attackers to cause a denial of service (crash) via an HTTP GET request without a URI.
http://www.iss.net/security_center/static/9528.php
http://archives.neohapsis.com/archives/bugtraq/2002-07/0143.html
http://archives.neohapsis.com/archives/bugtraq/2002-07/0082.html