The CLI interface for WatchGuard Firebox Vclass 3.2 and earlier, and RSSA Appliance 3.0.2, does not properly close the SSH connection when a -N option is provided during authentication, which allows remote attackers to access CLI with administrator privileges.
http://www.securityfocus.com/bid/5815
http://www.iss.net/security_center/static/10218.php
http://archives.neohapsis.com/archives/bugtraq/2002-09/0335.html
http://archives.neohapsis.com/archives/bugtraq/2002-09/0325.html