BadBlue server allows remote attackers to cause a denial of service (crash) via an HTTP GET request without a URI.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2002-1012
http://www.securityfocus.com/bid/5187
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