Sambar web server before 5.2 beta 1 allows remote attackers to obtain source code of server-side scripts, or cause a denial of service (resource exhaustion) via DOS devices, using a URL that ends with a space and a null character.
http://www.sambar.com/security.htm
http://www.iss.net/security_center/static/8876.php
http://online.securityfocus.com/archive/1/268121
http://archives.neohapsis.com/archives/vulnwatch/2002-q2/0026.html