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VID 21079
Severity 40
Port 80, ...
Protocol TCP
Class CGI
Detailed Description The '/cgi-bin/rwwwshell.pl' CGI is installed.
An attacker could configure the Reverse-WWW-Tunnel-Backdoor script on the victim's machine to connect to a remote machine running the same script in server mode at pre-configured intervals. Each time a connection takes place, the client will accept commands from the server and run them on the victim host.

* References:
http://www.iss.net/security_center/static/2293.php
http://packetstormsecurity.org/groups/thc/fw-backd.htm
Recommendation If this backdoor is found, the affected system should be isolated from your network(s) and considered completely compromised.
Related URL (CVE)
Related URL (SecurityFocus)
Related URL (ISS)