wwwoffled in World Wide Web Offline Explorer (WWWOFFLE) allows remote attackers to cause a denial of service and possibly execute arbitrary code via a negative Content-Length value.
http://www.securityfocus.com/bid/5260
http://www.iss.net/security_center/static/9619.php
http://www.debian.org/security/2002/dsa-144
http://marc.info/?l=bugtraq&m=102821890317683&w=2
http://archives.neohapsis.com/archives/bugtraq/2002-07/0194.html