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"
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



19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
 
# 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 



412
413
414
 
# File 'lib/aikido/zen.rb', line 412

def self.agent
  @agent
end

.api_cache ⇒ Object 



91
92
93
 
# 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:



265
266
267
 
# File 'lib/aikido/zen.rb', line 265

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.



120
121
122
123
124
125
 
# 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 



99
100
101
102
103
104
105
106
107
108
109
110
111
 
# 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.



135
136
137
 
# File 'lib/aikido/zen.rb', line 135

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

.config ⇒ Aikido::Zen::Config

Returns the agent configuration.

Returns:



77
78
79
 
# 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:



143
144
145
 
# 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:



152
153
154
 
# 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:



275
276
277
278
279
280
281
282
 
# File 'lib/aikido/zen.rb', line 275

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.



332
333
334
335
336
337
 
# File 'lib/aikido/zen.rb', line 332

def self.enable_idor_protection
  context = current_context
  return unless context

  context.idor_protection_enabled = true
end

.fork! ⇒ Object 



440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
 
# File 'lib/aikido/zen.rb', line 440

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:



322
323
324
325
326
327
 
# File 'lib/aikido/zen.rb', line 322

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:



313
314
315
 
# File 'lib/aikido/zen.rb', line 313

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

.middleware_installed! ⇒ Object

Marks that the Zen middleware was installed properly

Returns:

  • void



375
376
377
 
# File 'lib/aikido/zen.rb', line 375

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.



45
46
47
48
49
50
51
52
53
54
55
56
57
 
# 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 



95
96
97
 
# 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:



298
299
300
301
302
303
304
305
306
307
308
309
310
 
# File 'lib/aikido/zen.rb', line 298

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

.request_bypassed! ⇒ void

This method returns an undefined value.

Marks the current request as bypassed.



169
170
171
 
# File 'lib/aikido/zen.rb', line 169

def self.request_bypassed!
  current_context&.request_bypassed = true
end

.request_bypassed? ⇒ Boolean

Returns whether the current request is bypassed.

Returns:

  • (Boolean) —

    whether the current request is bypassed.



157
158
159
160
161
162
163
164
 
# File 'lib/aikido/zen.rb', line 157

def self.request_bypassed?
  context = current_context
  return unless context

  return context.request_bypassed unless context.request_bypassed.nil?

  context.request_bypassed = runtime_settings.bypassed_ip?(context.request.client_ip)
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.



83
84
85
 
# File 'lib/aikido/zen.rb', line 83

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

.runtime_settings=(settings) ⇒ Object 



87
88
89
 
# File 'lib/aikido/zen.rb', line 87

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

.secret ⇒ Object 



113
114
115
 
# 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) 


343
344
345
346
347
348
 
# File 'lib/aikido/zen.rb', line 343

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

  context.request.tenant_id = tenant_id
end

.start! ⇒ Object 



423
424
425
426
427
428
429
430
431
432
 
# File 'lib/aikido/zen.rb', line 423

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) 


434
435
436
437
438
 
# File 'lib/aikido/zen.rb', line 434

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.



129
130
131
 
# 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:



207
208
209
 
# File 'lib/aikido/zen.rb', line 207

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:



215
216
217
 
# File 'lib/aikido/zen.rb', line 215

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.



199
200
201
 
# File 'lib/aikido/zen.rb', line 199

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:



223
224
225
 
# File 'lib/aikido/zen.rb', line 223

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

.track_rate_limited_request(_request) ⇒ Object 



181
182
183
 
# File 'lib/aikido/zen.rb', line 181

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:



177
178
179
 
# File 'lib/aikido/zen.rb', line 177

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:



234
235
236
237
 
# File 'lib/aikido/zen.rb', line 234

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.



243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
 
# File 'lib/aikido/zen.rb', line 243

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.



190
191
192
 
# File 'lib/aikido/zen.rb', line 190

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



355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
 
# File 'lib/aikido/zen.rb', line 355

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 



416
417
418
 
# File 'lib/aikido/zen.rb', line 416

def self.worker_process_server
  @worker_process_server
end