Module: Aikido::Zen

Defined in:
lib/aikido/zen.rb,
lib/aikido/zen/sql.rb,
lib/aikido/zen/scan.rb,
lib/aikido/zen/sink.rb,
lib/aikido/zen/actor.rb,
lib/aikido/zen/agent.rb,
lib/aikido/zen/cache.rb,
lib/aikido/zen/event.rb,
lib/aikido/zen/route.rb,
lib/aikido/zen/attack.rb,
lib/aikido/zen/config.rb,
lib/aikido/zen/errors.rb,
lib/aikido/zen/worker.rb,
lib/aikido/zen/context.rb,
lib/aikido/zen/helpers.rb,
lib/aikido/zen/ipc/rpc.rb,
lib/aikido/zen/package.rb,
lib/aikido/zen/payload.rb,
lib/aikido/zen/request.rb,
lib/aikido/zen/version.rb,
lib/aikido/zen/sinks/pg.rb,
lib/aikido/zen/api_cache.rb,
lib/aikido/zen/collector.rb,
lib/aikido/zen/internals.rb,
lib/aikido/zen/sinks_dsl.rb,
lib/aikido/zen/api_client.rb,
lib/aikido/zen/api_stream.rb,
lib/aikido/zen/sinks/curb.rb,
lib/aikido/zen/sinks/file.rb,
lib/aikido/zen/sinks/http.rb,
lib/aikido/zen/attack_wave.rb,
lib/aikido/zen/sinks/excon.rb,
lib/aikido/zen/sinks/httpx.rb,
lib/aikido/zen/system_info.rb,
lib/aikido/zen/rails_engine.rb,
lib/aikido/zen/rate_limiter.rb,
lib/aikido/zen/sinks/kernel.rb,
lib/aikido/zen/sinks/mysql2.rb,
lib/aikido/zen/sinks/patron.rb,
lib/aikido/zen/sinks/resolv.rb,
lib/aikido/zen/sinks/socket.rb,
lib/aikido/zen/sinks/em_http.rb,
lib/aikido/zen/sinks/sqlite3.rb,
lib/aikido/zen/sinks/trilogy.rb,
lib/aikido/zen/idor/protector.rb,
lib/aikido/zen/request/schema.rb,
lib/aikido/zen/sinks/net_http.rb,
lib/aikido/zen/sinks/typhoeus.rb,
lib/aikido/zen/synchronizable.rb,
lib/aikido/zen/collector/event.rb,
lib/aikido/zen/collector/hosts.rb,
lib/aikido/zen/collector/stats.rb,
lib/aikido/zen/collector/users.rb,
lib/aikido/zen/collector/routes.rb,
lib/aikido/zen/runtime_settings.rb,
lib/aikido/zen/sinks/async_http.rb,
lib/aikido/zen/sinks/httpclient.rb,
lib/aikido/zen/background_worker.rb,
lib/aikido/zen/capped_collections.rb,
lib/aikido/zen/attack_wave/helpers.rb,
lib/aikido/zen/outbound_connection.rb,
lib/aikido/zen/rate_limiter/bucket.rb,
lib/aikido/zen/rate_limiter/result.rb,
lib/aikido/zen/collector/sink_stats.rb,
lib/aikido/zen/context/rack_request.rb,
lib/aikido/zen/idor/analysis_result.rb,
lib/aikido/zen/rate_limiter/breaker.rb,
lib/aikido/zen/request/rails_router.rb,
lib/aikido/zen/context/rails_request.rb,
lib/aikido/zen/scanners/ssrf_scanner.rb,
lib/aikido/zen/request/schema/builder.rb,
lib/aikido/zen/runtime_settings/ip_set.rb,
lib/aikido/zen/sinks/action_controller.rb,
lib/aikido/zen/agent/heartbeats_manager.rb,
lib/aikido/zen/middleware/fork_detector.rb,
lib/aikido/zen/request/heuristic_router.rb,
lib/aikido/zen/runtime_settings/domains.rb,
lib/aikido/zen/runtime_settings/ip_list.rb,
lib/aikido/zen/middleware/context_setter.rb,
lib/aikido/zen/middleware/rack_throttler.rb,
lib/aikido/zen/scanners/ssrf/dns_lookups.rb,
lib/aikido/zen/middleware/ip_list_checker.rb,
lib/aikido/zen/middleware/request_tracker.rb,
lib/aikido/zen/runtime_settings/endpoints.rb,
lib/aikido/zen/middleware/attack_protector.rb,
lib/aikido/zen/request/schema/auth_schemas.rb,
lib/aikido/zen/request/schema/empty_schema.rb,
lib/aikido/zen/scanners/stored_ssrf_scanner.rb,
lib/aikido/zen/middleware/user_agent_checker.rb,
lib/aikido/zen/request/schema/auth_discovery.rb,
lib/aikido/zen/scanners/sql_injection_scanner.rb,
lib/aikido/zen/scanners/path_traversal/helpers.rb,
lib/aikido/zen/scanners/path_traversal_scanner.rb,
lib/aikido/zen/middleware/attack_wave_protector.rb,
lib/aikido/zen/runtime_settings/domain_settings.rb,
lib/aikido/zen/scanners/shell_injection_scanner.rb,
lib/aikido/zen/scanners/ssrf/private_ip_checker.rb,
lib/aikido/zen/middleware/allowed_address_checker.rb,
lib/aikido/zen/runtime_settings/protection_settings.rb,
lib/aikido/zen/runtime_settings/rate_limit_settings.rb,
lib/aikido/zen/ipc/ipc.rb

Defined Under Namespace

Modules: AttackWave, Attacks, Events, Helpers, IDOR, IPC, Internals, Middleware, RPC, Rails, SQL, Scanners, Sinks, WorkerProcess Classes: APICache, APIClient, APIError, APIStream, Actor, Agent, Attack, BackgroundWorker, Cache, CacheEntry, CappedMap, CappedSet, Collector, Config, Context, DecodeError, Event, InternalsError, NetworkError, OutboundConnection, OutboundConnectionBlockedError, Package, PathTraversalError, Payload, RailsEngine, RateLimitedError, RateLimiter, Request, Route, RuntimeSettings, SQLInjectionError, SSRFDetectedError, Scan, ShellInjectionError, Sink, SystemInfo, UnderAttackError, Worker

Constant Summary collapse

VERSION = 
"1.7.2.beta.2"
LIBZEN_VERSION =

The version of libzen_internals that we build against.

"0.1.61"

Class Method Summary collapse

Class Method Details

.Actor(actor) ⇒ Object .Actor(data) ⇒ Object

Converts an object into an Actor for reporting back to the Aikido Dashboard.

Overloads:

  • .Actor(actor) ⇒ Object

    Returns Aikido::Zen::Actor.

    Parameters:

    • actor (#to_aikido_actor) —

      anything that implements #to_aikido_actor will have that method called and its value returned.

    Returns:

    • Aikido::Zen::Actor

  • .Actor(data) ⇒ Object

    Returns Aikido::Zen::Actor.

    Parameters:

    • data (Hash<Symbol, String>)

    Options Hash (data):

    • :id (String) —

      a unique identifier for this user.

    • :name (String, nil) —

      an optional name to display in the UI.

    Returns:

    • Aikido::Zen::Actor



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# File 'lib/aikido/zen/actor.rb', line 19

def self.Actor(data)
  return if data.nil?
  return data.to_aikido_actor if data.respond_to?(:to_aikido_actor)

  attrs = {}
  if data.respond_to?(:to_hash)
    attrs = data.to_hash
      .slice("id", "name", :id, :name)
      .compact
      .transform_keys(&:to_sym)
      .transform_values(&:to_s)
  else
    return nil
  end

  return nil if attrs[:id].nil? || attrs[:id].to_s.strip.empty?

  Actor.new(**attrs)
end

.agent ⇒ Object 



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# File 'lib/aikido/zen.rb', line 395

def self.agent
  @agent
end

.api_cache ⇒ Object 



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# File 'lib/aikido/zen.rb', line 91

def self.api_cache
  @api_cache ||= APICache.new
end

.attack_wave_detector ⇒ Aikido::Zen::AttackWave::Detector

Returns the attack wave detector.

Returns:



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# File 'lib/aikido/zen.rb', line 248

def self.attack_wave_detector
  @attack_wave_detector ||= AttackWave::Detector.new
end

.blocking_mode? ⇒ Boolean

Returns whether the Aikido agent is currently blocking requests. Blocking mode is configured at startup and can be controlled through the Aikido dashboard at runtime.

Returns:

  • (Boolean) —

    whether the Aikido agent is currently blocking requests. Blocking mode is configured at startup and can be controlled through the Aikido dashboard at runtime.



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# File 'lib/aikido/zen.rb', line 120

def self.blocking_mode?
  blocking_mode = runtime_settings.blocking_mode
  return blocking_mode unless blocking_mode.nil?

  config.blocking_mode
end

.calculate_rate_limits(request) ⇒ Object 



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# File 'lib/aikido/zen.rb', line 99

def self.calculate_rate_limits(request)
  worker_process_client = @worker_process_client

  if worker_process_client
    begin
      worker_process_client.calculate_rate_limits(request)
    rescue
      rate_limiter.calculate_rate_limits(request)
    end
  else
    rate_limiter.calculate_rate_limits(request)
  end
end

.collector ⇒ Object

Manages runtime metrics extracted from your app, which are uploaded to the Aikido servers if configured to do so.



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# File 'lib/aikido/zen.rb', line 135

def self.collector
  @collector ||= Collector.new
end

.config ⇒ Aikido::Zen::Config

Returns the agent configuration.

Returns:



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# File 'lib/aikido/zen.rb', line 77

def self.config
  @config ||= Config.new
end

.current_context ⇒ Aikido::Zen::Context?

Gets the current context object that holds all information about the current request.

Returns:



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# File 'lib/aikido/zen.rb', line 143

def self.current_context
  Fiber.current.aikido_current_context
end

.current_context=(context) ⇒ Aikido::Zen::Context?

Sets the current context object that holds all information about the current request, or nil to clear the current context.

Parameters:

Returns:



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# File 'lib/aikido/zen.rb', line 152

def self.current_context=(context)
  Fiber.current.aikido_current_context = context
end

.detect_attack_wave(context, status_code = nil) ⇒ Array<Aikido::Zen::AttackWave::Sample>?

Classifies the current request and, if it is classified as suspicious, records a sample against the attack wave detector.

Parameters:

Returns:



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# File 'lib/aikido/zen.rb', line 258

def self.detect_attack_wave(context, status_code = nil)
  client_ip = context.request.client_ip
  return nil unless client_ip

  return nil unless AttackWave::Helpers.web_scanner?(context, status_code)

  record_attack_wave(client_ip, AttackWave::Helpers.sample_for(context))
end

.enable_idor_protection ⇒ void

This method returns an undefined value.

Enable IDOR protection for the current context.



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# File 'lib/aikido/zen.rb', line 315

def self.enable_idor_protection
  context = current_context
  return unless context

  context.idor_protection_enabled = true
end

.fork! ⇒ Object 



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# File 'lib/aikido/zen.rb', line 423

def fork!
  server = @worker_process_server
  return unless server

  @worker_process_server = nil
  server.close

  client = @worker_process_client
  @worker_process_client = nil
  client&.close

  client = WorkerProcess::Agent::Client.new(server.host, server.port)
  client.start
  @worker_process_client = client
rescue => err
  config.logger.error("Forked worker process #{Process.pid}: failed to start worker process client: #{err.message}")
end

.idor_protect(sql, dialect_name, params = nil) ⇒ void

This method returns an undefined value.

Parameters:

  • sql (String)
  • dialect (Symbol)
  • params (Array, nil) (defaults to: nil)

Raises:



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# File 'lib/aikido/zen.rb', line 305

def self.idor_protect(sql, dialect_name, params = nil)
  context = current_context
  return unless context

  idor_protector.protect(sql, dialect_name, params, context)
end

.idor_protector ⇒ Aikido::Zen::IDOR::Protector

Returns:



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# File 'lib/aikido/zen.rb', line 296

def self.idor_protector
  @idor_protector ||= IDOR::Protector.new
end

.middleware_installed! ⇒ Object

Marks that the Zen middleware was installed properly

Returns:

  • void



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# File 'lib/aikido/zen.rb', line 358

def self.middleware_installed!
  collector.middleware_installed!
end

.protect! ⇒ void

This method returns an undefined value.

Enable protection. Until this method is called no sinks are loaded and the Aikido Agent does not start.

This method should be called only once, in the application after the initialization process is complete.



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# File 'lib/aikido/zen.rb', line 45

def self.protect!
  if config.disabled?
    config.logger.warn("Zen has been disabled and will not run")
    return
  end

  unless load_sources! && load_sinks!
    config.logger.warn("Zen could not find any supported libraries or frameworks. Visit https://github.com/AikidoSec/firewall-ruby for more information.")
    return
  end

  middleware_installed!
end

.rate_limiter ⇒ Object 



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# File 'lib/aikido/zen.rb', line 95

def self.rate_limiter
  @rate_limiter ||= RateLimiter.new
end

.record_attack_wave(client_ip, sample) ⇒ Array<Aikido::Zen::AttackWave::Sample>?

Records a suspicious sample and, if the threshold for triggering an attack wave has been crossed, flags the client IP as having just triggered an attack wave.

In multiprocess deployments, on RPC failure, the worker process records against its local detector.

If RPC failures are intermittent, it is possible that an attack wave may be missed or duplicated, because state is split between the global and local detectors.

Parameters:

Returns:



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# File 'lib/aikido/zen.rb', line 281

def self.record_attack_wave(client_ip, sample)
  worker_process_client = @worker_process_client

  if worker_process_client
    begin
      worker_process_client.record_attack_wave(client_ip, sample)
    rescue
      attack_wave_detector.record(client_ip, sample)
    end
  else
    attack_wave_detector.record(client_ip, sample)
  end
end

.runtime_settings ⇒ Aikido::Zen::RuntimeSettings

Returns the firewall configuration sourced from your Aikido dashboard. This is periodically polled for updates.

Returns:

  • (Aikido::Zen::RuntimeSettings) —

    the firewall configuration sourced from your Aikido dashboard. This is periodically polled for updates.



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# File 'lib/aikido/zen.rb', line 83

def self.runtime_settings
  @runtime_settings ||= RuntimeSettings.new
end

.runtime_settings=(settings) ⇒ Object 



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# File 'lib/aikido/zen.rb', line 87

def self.runtime_settings=(settings)
  @runtime_settings = settings
end

.secret ⇒ Object 



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# File 'lib/aikido/zen.rb', line 113

def self.secret
  @secret ||= SecureRandom.bytes(32)
end

.set_tenant_id(tenant_id) ⇒ void

This method returns an undefined value.

Set the tenant ID for the current request.

Parameters:

  • tenant_id (Integer, String, nil) 


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# File 'lib/aikido/zen.rb', line 326

def self.set_tenant_id(tenant_id)
  context = current_context
  return unless context

  context.request.tenant_id = tenant_id
end

.start! ⇒ Object 



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# File 'lib/aikido/zen.rb', line 406

def start!
  return unless start?

  return unless @has_started.make_true

  @worker_process_server = WorkerProcess::Agent::Server.new
  @worker_process_server.start

  @agent = Agent.start
end

.start? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/aikido/zen.rb', line 417

def start?
  !config.api_token.nil? ||
    config.blocking_mode? ||
    config.debugging?
end

.system_info ⇒ Object

Gets information about the current system configuration, which is sent to the server along with any events.



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# File 'lib/aikido/zen.rb', line 129

def self.system_info
  @system_info ||= SystemInfo.new
end

.track_attack_wave(_attack_wave) ⇒ void

This method returns an undefined value.

Track statistics about an attack wave the app is handling.

Parameters:



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# File 'lib/aikido/zen.rb', line 190

def self.track_attack_wave(_attack_wave)
  collector.track_attack_wave(being_blocked: false)
end

.track_discovered_route(request) ⇒ void

This method returns an undefined value.

Track statistics about a route that the app has discovered.

Parameters:



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# File 'lib/aikido/zen.rb', line 198

def self.track_discovered_route(request)
  collector.track_route(request)
end

.track_ip_list(ip_list_keys) ⇒ void

This method returns an undefined value.

Track blocked and monitored IP lists.

Parameters:

  • ip_list_keys (Array<String>, nil) —

    the IP list keys from matching runtime firewall list IP lists.



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# File 'lib/aikido/zen.rb', line 182

def self.track_ip_list(ip_list_keys)
  collector.track_ip_list(ip_list_keys)
end

.track_outbound(connection) ⇒ void

This method returns an undefined value.

Tracks a network connection made to an external service.

Parameters:



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# File 'lib/aikido/zen.rb', line 206

def self.track_outbound(connection)
  collector.track_outbound(connection)
end

.track_rate_limited_request(_request) ⇒ Object 



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# File 'lib/aikido/zen.rb', line 164

def self.track_rate_limited_request(_request)
  collector.track_rate_limited_request
end

.track_request(_request) ⇒ void

This method returns an undefined value.

Track statistics about an HTTP request the app is handling.

Parameters:



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# File 'lib/aikido/zen.rb', line 160

def self.track_request(_request)
  collector.track_request
end

.track_scan(scan) ⇒ void

This method returns an undefined value.

Track statistics about the result of a Sink's scan, and report it as an Attack if one is detected.

Parameters:

Raises:



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# File 'lib/aikido/zen.rb', line 217

def self.track_scan(scan)
  collector.track_scan(scan)
  agent.handle_attack(scan.attack) if scan.attack?
end

.track_user(user) ⇒ void Also known as: set_user

This method returns an undefined value.

Track the user making the current request.



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# File 'lib/aikido/zen.rb', line 226

def self.track_user(user)
  return if config.disabled?

  if (actor = Aikido::Zen::Actor(user))
    collector.track_user(actor)
    current_context.request.actor = actor if current_context
  else
    config.logger.warn(format(<<~LOG, obj: user))
      Incompatible object sent to track_user: %<obj>p

      The object must either implement #to_aikido_actor, or be a Hash with
      an :id (or "id") and, optionally, a :name (or "name") key.
    LOG
  end
end

.track_user_agent(user_agent_keys) ⇒ void

This method returns an undefined value.

Track blocked and monitored user agents.

Parameters:

  • user_agent_keys (Array<String>, nil) —

    the user agent keys from matching runtime firewall list user agent details.



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# File 'lib/aikido/zen.rb', line 173

def self.track_user_agent(user_agent_keys)
  collector.track_user_agent(user_agent_keys)
end

.without_idor_protection { ... } ⇒ Object

Execute a block with the IDOR protection disabled.

Yields:

  • the block to execute with the IDOR protection disabled.

Returns:

  • (Object) —

    the result of the block

Raises:

  • (ArgumentError) —

    if no block is given



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# File 'lib/aikido/zen.rb', line 338

def self.without_idor_protection
  raise ArgumentError, "block required" unless block_given?

  context = current_context

  if context
    begin
      original_idor_protection_enabled = context.idor_protection_enabled
      context.idor_protection_enabled = false
      yield
    ensure
      context.idor_protection_enabled = original_idor_protection_enabled
    end
  else
    yield
  end
end

.worker_process_server ⇒ Object 



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# File 'lib/aikido/zen.rb', line 399

def self.worker_process_server
  @worker_process_server
end