Module: Brakeman

Defined in:
lib/brakeman.rb,
lib/brakeman/version.rb,
lib/brakeman/app_tree.rb,
lib/brakeman/messages.rb,
lib/brakeman/file_path.rb,
lib/brakeman/processor.rb,
lib/brakeman/commandline.rb,
lib/brakeman/file_parser.rb,
lib/brakeman/report/pager.rb,
lib/brakeman/tracker/model.rb,
lib/brakeman/tracker/config.rb,
lib/brakeman/tracker/library.rb,
lib/brakeman/tracker/template.rb,
lib/brakeman/tracker/constants.rb,
lib/brakeman/tracker/collection.rb,
lib/brakeman/tracker/controller.rb,
lib/brakeman/tracker/method_info.rb,
lib/brakeman/report/ignore/config.rb,
lib/brakeman/parsers/haml_embedded.rb,
lib/brakeman/parsers/template_parser.rb,
lib/brakeman/report/ignore/interactive.rb,
lib/brakeman/processors/lib/render_path.rb,
lib/brakeman/processors/lib/safe_call_helper.rb,
lib/brakeman/codeclimate/engine_configuration.rb,
lib/brakeman/processors/lib/file_type_detector.rb,
lib/brakeman/processors/lib/call_conversion_helper.rb

Defined Under Namespace

Modules: CallConversionHelper, Codeclimate, ControllerMethods, FakeHamlFilter, Messages, ModelMethods, ModuleHelper, Options, ProcessorHelper, RenderHelper, RouteHelper, SafeCallHelper, Util, WarningCodes Classes: ASTFile, AliasProcessor, AppTree, BaseCheck, BaseProcessor, BasicProcessor, CallIndex, CheckBasicAuth, CheckBasicAuthTimingAttack, CheckCSRFTokenForgeryCVE, CheckContentTag, CheckCookieSerialization, CheckCreateWith, CheckCrossSiteScripting, CheckDefaultRoutes, CheckDeserialize, CheckDetailedExceptions, CheckDigestDoS, CheckDivideByZero, CheckDynamicFinders, CheckEOLRails, CheckEOLRuby, CheckEscapeFunction, CheckEvaluation, CheckExecute, CheckFileAccess, CheckFileDisclosure, CheckFilterSkipping, CheckForceSSL, CheckForgerySetting, CheckHeaderDoS, CheckI18nXSS, CheckJRubyXML, CheckJSONEncoding, CheckJSONEntityEscape, CheckJSONParsing, CheckLinkTo, CheckLinkToHref, CheckMailTo, CheckMassAssignment, CheckMimeTypeDoS, CheckModelAttrAccessible, CheckModelAttributes, CheckModelSerialize, CheckNestedAttributes, CheckNestedAttributesBypass, CheckNumberToCurrency, CheckPageCachingCVE, CheckPathname, CheckPermitAttributes, CheckQuoteTableName, CheckRansack, CheckRedirect, CheckRegexDoS, CheckRender, CheckRenderDoS, CheckRenderInline, CheckResponseSplitting, CheckReverseTabnabbing, CheckRouteDoS, CheckSQL, CheckSQLCVEs, CheckSSLVerify, CheckSafeBufferManipulation, CheckSanitizeConfigCve, CheckSanitizeMethods, CheckSecrets, CheckSelectTag, CheckSelectVulnerability, CheckSend, CheckSendFile, CheckSessionManipulation, CheckSessionSettings, CheckSimpleFormat, CheckSingleQuotes, CheckSkipBeforeFilter, CheckSprocketsPathTraversal, CheckStripTags, CheckSymbolDoS, CheckSymbolDoSCVE, CheckTemplateInjection, CheckTranslateBug, CheckUnsafeReflection, CheckUnsafeReflectionMethods, CheckUnscopedFind, CheckValidationRegex, CheckVerbConfusion, CheckWeakHash, CheckWeakRSAKey, CheckWithoutProtection, CheckXMLDoS, CheckYAMLParsing, Checks, Collection, Commandline, Config, ConfigAliasProcessor, ConfigProcessor, Constant, Constants, Controller, ControllerAliasProcessor, ControllerProcessor, DependencyError, Differ, EOLCheck, ErbTemplateProcessor, ErubisTemplateProcessor, FileParser, FilePath, FileTypeDetector, FindAllCalls, FindCall, FindReturnValue, GemProcessor, HamlTemplateProcessor, IgnoreConfig, InteractiveIgnorer, Library, LibraryProcessor, MethodInfo, MissingChecksError, Model, ModelProcessor, NoApplication, NoBrakemanError, OutputProcessor, Pager, Processor, Rails2ConfigProcessor, Rails2RoutesProcessor, Rails2XSSPluginErubis, Rails3ConfigProcessor, Rails3Erubis, Rails3RoutesProcessor, Rails4ConfigProcessor, RenderPath, Report, RescanReport, Rescanner, RouteAliasProcessor, RoutesProcessor, Scanner, ScannerErubis, SexpProcessor, SlimTemplateProcessor, Template, TemplateAliasProcessor, TemplateParser, TemplateProcessor, Tracker, Warning

Constant Summary collapse

Warnings_Found_Exit_Code =

This exit code is used when warnings are found and the –exit-on-warn option is set

3
No_App_Found_Exit_Code =

Exit code returned when no Rails application is detected

4
Not_Latest_Version_Exit_Code =

Exit code returned when brakeman was outdated

5
Missing_Checks_Exit_Code =

Exit code returned when user requests non-existent checks

6
Errors_Found_Exit_Code =

Exit code returned when errors were found and the –exit-on-error option is set

7
Empty_Ignore_Note_Exit_Code =

Exit code returned when an ignored warning has no note and –ensure-ignore-notes is set

8
CONFIG_FILES = 
begin
  [
    File.expand_path("~/.brakeman/config.yml"),
    File.expand_path("/etc/brakeman/config.yml")
  ]
rescue ArgumentError
  # In case $HOME or $USER aren't defined for use of `~`
  [
    File.expand_path("/etc/brakeman/config.yml")
  ]
end
Version = 
"6.1.0"

Class Method Summary collapse

Class Method Details

.add_external_checks(options) ⇒ Object 



572
573
574
575
576
 
# File 'lib/brakeman.rb', line 572

def self.add_external_checks options
  options[:additional_checks_path].each do |path|
    Brakeman::Checks.initialize_checks path
  end if options[:additional_checks_path]
end

.check_for_missing_checks(included_checks, excluded_checks, enabled_checks) ⇒ Object 



578
579
580
581
582
583
584
585
586
 
# File 'lib/brakeman.rb', line 578

def self.check_for_missing_checks included_checks, excluded_checks, enabled_checks
  checks = included_checks.to_a + excluded_checks.to_a + enabled_checks.to_a

  missing = Brakeman::Checks.missing_checks(checks)

  unless missing.empty?
    raise MissingChecksError, "Could not find specified check#{missing.length > 1 ? 's' : ''}: #{missing.map {|c| "`#{c}`"}.join(', ')}"
  end
end

.compare(options) ⇒ Object

Compare JSON output from a previous scan and return the diff of the two scans

Raises:

  • (ArgumentError) 


483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
 
# File 'lib/brakeman.rb', line 483

def self.compare options
  require 'json'
  require 'brakeman/differ'
  raise ArgumentError.new("Comparison file doesn't exist") unless File.exist? options[:previous_results_json]

  begin
    previous_results = JSON.parse(File.read(options[:previous_results_json]), :symbolize_names => true)[:warnings]
  rescue JSON::ParserError
    self.notify "Error parsing comparison file: #{options[:previous_results_json]}"
    exit!
  end

  tracker = run(options)
  new_report = JSON.parse(tracker.report.to_json, symbolize_names: true)

  new_results = new_report[:warnings]
  obsolete_ignored = tracker.unused_fingerprints

  Brakeman::Differ.new(new_results, previous_results).diff.tap do |diff|
    diff[:obsolete] = obsolete_ignored
  end
end

.config_file(custom_location, app_path) ⇒ Object 



173
174
175
176
177
 
# File 'lib/brakeman.rb', line 173

def self.config_file custom_location, app_path
  app_config = File.expand_path(File.join(app_path, "config", "brakeman.yml"))
  supported_locations = [File.expand_path(custom_location || ""), app_config] + CONFIG_FILES
  supported_locations.detect {|f| File.file?(f) }
end

.debug(message) ⇒ Object 



478
479
480
 
# File 'lib/brakeman.rb', line 478

def self.debug message
  $stderr.puts message if @debug
end

.debug=(val) ⇒ Object 



588
589
590
 
# File 'lib/brakeman.rb', line 588

def self.debug= val
  @debug = val
end

.default_options ⇒ Object

Default set of options



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
 
# File 'lib/brakeman.rb', line 180

def self.default_options
  { :assume_all_routes => true,
    :check_arguments => true,
    :collapse_mass_assignment => false,
    :combine_locations => true,
    :engine_paths => ["engines/*"],
    :exit_on_error => true,
    :exit_on_warn => true,
    :highlight_user_input => true,
    :html_style => "#{File.expand_path(File.dirname(__FILE__))}/brakeman/format/style.css",
    :ignore_model_output => false,
    :ignore_redirect_to_model => true,
    :index_libs => true,
    :message_limit => 100,
    :min_confidence => 2,
    :output_color => true,
    :pager => true,
    :parallel_checks => true,
    :parser_timeout => 10,
    :relative_path => false,
    :report_progress => true,
    :safe_methods => Set.new,
    :sql_safe_methods => Set.new,
    :skip_checks => Set.new,
    :skip_vendor => true,
  }
end

.dump_config(options) ⇒ Object

Output configuration to YAML



338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
 
# File 'lib/brakeman.rb', line 338

def self.dump_config options
  require 'yaml'
  if options[:create_config].is_a? String
    file = options[:create_config]
  else
    file = nil
  end

  options.delete :create_config

  options.each do |k,v|
    if v.is_a? Set
      options[k] = v.to_a
    end
  end

  if file
    File.open file, "w" do |f|
      YAML.dump options, f
    end
    notify "Output configuration to #{file}"
  else
    notify YAML.dump(options)
  end
end

.ensure_latest ⇒ Object 



364
365
366
367
368
369
370
 
# File 'lib/brakeman.rb', line 364

def self.ensure_latest
  current = Brakeman::Version
  latest = Gem.latest_version_for('brakeman').to_s
  if current != latest
    "Brakeman #{current} is not the latest version #{latest}"
  end
end

.filter_warnings(tracker, options) ⇒ Object 



544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
 
# File 'lib/brakeman.rb', line 544

def self.filter_warnings tracker, options
  require 'brakeman/report/ignore/config'

  app_tree = Brakeman::AppTree.from_options(options)

  if options[:ignore_file]
    file = options[:ignore_file]
  elsif app_tree.exists? "config/brakeman.ignore"
    file = app_tree.expand_path("config/brakeman.ignore")
  elsif not options[:interactive_ignore]
    return
  end

  notify "Filtering warnings..."

  if options[:interactive_ignore]
    require 'brakeman/report/ignore/interactive'
    config = InteractiveIgnorer.new(file, tracker.warnings).start
  else
    notify "[Notice] Using '#{file}' to filter warnings"
    config = IgnoreConfig.new(file, tracker.warnings)
    config.read_from_file
    config.filter_ignored
  end

  tracker.ignored_filter = config
end

.get_output_formats(options) ⇒ Object

Determine output formats based on options or options



210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
 
# File 'lib/brakeman.rb', line 210

def self.get_output_formats options
  #Set output format
  if options[:output_format] && options[:output_files] && options[:output_files].size > 1
    raise ArgumentError, "Cannot specify output format if multiple output files specified"
  end
  if options[:output_format]
    get_formats_from_output_format options[:output_format]
  elsif options[:output_files]
    get_formats_from_output_files options[:output_files]
  else
    begin
      self.load_brakeman_dependency 'terminal-table', :allow_fail
      return [:to_s]
    rescue LoadError
      return [:to_json]
    end
  end
end

.ignore_file_entries_with_empty_notes(file) ⇒ Object

Returns an array of alert fingerprints for any ignored warnings without notes found in the specified ignore file (if it exists).



534
535
536
537
538
539
540
541
542
 
# File 'lib/brakeman.rb', line 534

def self.ignore_file_entries_with_empty_notes file
  return [] unless file

  require 'brakeman/report/ignore/config'

  config = IgnoreConfig.new(file, nil)
  config.read_from_file
  config.already_ignored_entries_with_empty_notes.map { |i| i[:fingerprint] }
end

.list_checks(options) ⇒ Object

Output list of checks (for ‘-k` option)



316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
 
# File 'lib/brakeman.rb', line 316

def self.list_checks options
  require 'brakeman/scanner'

  add_external_checks options

  if options[:list_optional_checks]
    $stderr.puts "Optional Checks:"
    checks = Checks.optional_checks
  else
    $stderr.puts "Available Checks:"
    checks = Checks.checks
  end

  format_length = 30

  $stderr.puts "-" * format_length
  checks.each do |check|
    $stderr.printf("%-#{format_length}s%s\n", check.name, check.description)
  end
end

.load_brakeman_dependency(name, allow_fail = false) ⇒ Object 



506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
 
# File 'lib/brakeman.rb', line 506

def self.load_brakeman_dependency name, allow_fail = false
  return if @loaded_dependencies.include? name

  unless @vendored_paths
    path_load = "#{File.expand_path(File.dirname(__FILE__))}/../bundle/load.rb"

    if File.exist? path_load
      require path_load
    end

    @vendored_paths = true
  end

  begin
    require name
  rescue LoadError => e
    if allow_fail
      raise e
    else
      $stderr.puts e.message
      $stderr.puts "Please install the appropriate dependency: #{name}."
      exit!(-1)
    end
  end
end

.load_options(line_options) ⇒ Object

Load options from YAML file



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
 
# File 'lib/brakeman.rb', line 124

def self.load_options line_options
  custom_location = line_options[:config_file]
  quiet = line_options[:quiet]
  app_path = line_options[:app_path]

  #Load configuration file
  if config = config_file(custom_location, app_path)
    require 'date' # https://github.com/dtao/safe_yaml/issues/80
    self.load_brakeman_dependency 'safe_yaml/load'
    options = SafeYAML.load_file config, :deserialize_symbols => true

    if options
      options.each { |k, v| options[k] = Set.new v if v.is_a? Array }

      # After parsing the yaml config file for options, convert any string keys into symbols.
      options.keys.select {|k| k.is_a? String}.map {|k| k.to_sym }.each {|k| options[k] = options[k.to_s]; options.delete(k.to_s) }

      unless line_options[:allow_check_paths_in_config]
        if options.include? :additional_checks_path
          options.delete :additional_checks_path

          notify "[Notice] Ignoring additional check paths in config file. Use --allow-check-paths-in-config to allow" unless (options[:quiet] || quiet)
        end
      end

      # notify if options[:quiet] and quiet is nil||false
      notify "[Notice] Using configuration in #{config}" unless (options[:quiet] || quiet)
      options
    else
      notify "[Notice] Empty configuration file: #{config}" unless quiet
      {}
    end
  else
    {}
  end
end

.notify(message) ⇒ Object 



474
475
476
 
# File 'lib/brakeman.rb', line 474

def self.notify message
  $stderr.puts message unless @quiet
end

.quiet=(val) ⇒ Object 



592
593
594
 
# File 'lib/brakeman.rb', line 592

def self.quiet= val
  @quiet = val
end

.rescan(tracker, files, options = {}) ⇒ Object

Rescan a subset of files in a Rails application.

A full scan must have been run already to use this method. The returned Tracker object from Brakeman.run is used as a starting point for the rescan.

Options may be given as a hash with the same values as Brakeman.run. Note that these options will be merged into the Tracker.

This method returns a RescanReport object with information about the scan. However, the Tracker object will also be modified as the scan is run.



463
464
465
466
467
468
469
470
471
472
 
# File 'lib/brakeman.rb', line 463

def self.rescan tracker, files, options = {}
  require 'brakeman/rescanner'

  tracker.options.merge! options

  @quiet = !!tracker.options[:quiet]
  @debug = !!tracker.options[:debug]

  Rescanner.new(tracker.options, tracker.processor, files).recheck
end

.run(options) ⇒ Object

Run Brakeman scan. Returns Tracker object.

Options:

* :app_path - path to root of Rails app (required)
* :additional_checks_path - array of additional directories containing additional out-of-tree checks to run
* :additional_libs_path - array of additional application relative lib directories (ex. app/mailers) to process
* :assume_all_routes - assume all methods are routes (default: true)
* :check_arguments - check arguments of methods (default: true)
* :collapse_mass_assignment - report unprotected models in single warning (default: false)
* :combine_locations - combine warning locations (default: true)
* :config_file - configuration file
* :escape_html - escape HTML by default (automatic)
* :exit_on_error - only affects Commandline module (default: true)
* :exit_on_warn - only affects Commandline module (default: true)
* :github_repo - github repo to use for file links (user/repo[/path][@ref])
* :highlight_user_input - highlight user input in reported warnings (default: true)
* :html_style - path to CSS file
* :ignore_model_output - consider models safe (default: false)
* :index_libs - add libraries to call index (default: true)
* :interprocedural - limited interprocedural processing of method calls (default: false)
* :message_limit - limit length of messages
* :min_confidence - minimum confidence (0-2, 0 is highest)
* :output_files - files for output
* :output_formats - formats for output (:to_s, :to_tabs, :to_csv, :to_html)
* :parallel_checks - run checks in parallel (default: true)
* :parser_timeout - set timeout for parsing an individual file (default: 10 seconds)
* :print_report - if no output file specified, print to stdout (default: false)
* :quiet - suppress most messages (default: true)
* :rails3 - force Rails 3 mode (automatic)
* :rails4 - force Rails 4 mode (automatic)
* :rails5 - force Rails 5 mode (automatic)
* :rails6 - force Rails 6 mode (automatic)
* :report_routes - show found routes on controllers (default: false)
* :run_checks - array of checks to run (run all if not specified)
* :safe_methods - array of methods to consider safe
* :sql_safe_methods - array of sql sanitization methods to consider safe
* :skip_libs - do not process lib/ directory (default: false)
* :skip_vendor - do not process vendor/ directory (default: true)
* :skip_checks - checks not to run (run all if not specified)
* :absolute_paths - show absolute path of each file (default: false)
* :summary_only - only output summary section of report for plain/table (:summary_only, :no_summary, true)

Alternatively, just supply a path as a string.



76
77
78
79
80
81
82
83
84
85
86
87
 
# File 'lib/brakeman.rb', line 76

def self.run options
  options = set_options options

  @quiet = !!options[:quiet]
  @debug = !!options[:debug]

  if @quiet
    options[:report_progress] = false
  end

  scan options
end

.scan(options) ⇒ Object

Run a scan. Generally called from Brakeman.run instead of directly.



373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
 
# File 'lib/brakeman.rb', line 373

def self.scan options
  #Load scanner
  notify "Loading scanner..."

  begin
    require 'brakeman/scanner'
  rescue LoadError
    raise NoBrakemanError, "Cannot find lib/ directory."
  end

  add_external_checks options

  #Start scanning
  scanner = Scanner.new options
  tracker = scanner.tracker

  check_for_missing_checks options[:run_checks], options[:skip_checks], options[:enable_checks]

  notify "Processing application in #{tracker.app_path}"
  scanner.process

  if options[:parallel_checks]
    notify "Running checks in parallel..."
  else
    notify "Running checks..."
  end

  tracker.run_checks

  self.filter_warnings tracker, options

  if options[:output_files]
    notify "Generating report..."

    write_report_to_files tracker, options[:output_files]
  elsif options[:print_report]
    notify "Generating report..."

    write_report_to_formats tracker, options[:output_formats]
  end

  tracker
end

.set_options(options) ⇒ Object

Sets up options for run, checks given application path



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
 
# File 'lib/brakeman.rb', line 90

def self.set_options options
  if options.is_a? String
    options = { :app_path => options }
  end

  if options[:quiet] == :command_line
    command_line = true
    options.delete :quiet
  end

  options = default_options.merge(load_options(options)).merge(options)

  if options[:quiet].nil? and not command_line
    options[:quiet] = true
  end

  if options[:rails4]
    options[:rails3] = true
  elsif options[:rails5]
    options[:rails3] = true
    options[:rails4] = true
  elsif options[:rails6]
    options[:rails3] = true
    options[:rails4] = true
    options[:rails5] = true
  end

  options[:output_formats] = get_output_formats options
  options[:github_url] = get_github_url options

  options
end