Class: Brakeman::CheckTranslateBug

Inherits:
BaseCheck show all
Defined in:
lib/brakeman/checks/check_translate_bug.rb

Overview

Check for vulnerability in translate() helper that allows cross-site scripting

Constant Summary

Constants inherited from BaseCheck

BaseCheck::CONFIDENCE

Constants included from Util

Util::ALL_COOKIES, Util::ALL_PARAMETERS, Util::COOKIES, Util::COOKIES_SEXP, Util::DIR_CONST, Util::LITERALS, Util::PARAMETERS, Util::PARAMS_SEXP, Util::PATH_PARAMETERS, Util::QUERY_PARAMETERS, Util::REQUEST_COOKIES, Util::REQUEST_ENV, Util::REQUEST_PARAMETERS, Util::REQUEST_PARAMS, Util::REQUEST_REQUEST_PARAMETERS, Util::SAFE_LITERAL, Util::SESSION, Util::SESSION_SEXP, Util::SIMPLE_LITERALS

Constants inherited from SexpProcessor

SexpProcessor::VERSION

Instance Attribute Summary

Attributes inherited from BaseCheck

#tracker, #warnings

Attributes inherited from SexpProcessor

#context, #env, #expected

Instance Method Summary collapse

Methods inherited from BaseCheck

#add_result, inherited, #initialize, #process_array, #process_call, #process_cookies, #process_default, #process_dstr, #process_if, #process_params

Methods included from Messages

#msg, #msg_code, #msg_cve, #msg_file, #msg_input, #msg_lit, #msg_plain, #msg_version

Methods included from Util

#all_literals?, #array?, #block?, #call?, #camelize, #class_name, #constant?, #contains_class?, #cookies?, #dir_glob?, #false?, #hash?, #hash_access, #hash_insert, #hash_iterate, #hash_values, #integer?, #kwsplat?, #literal?, #make_call, #node_type?, #number?, #params?, #pluralize, #rails_version, #recurse_check?, #regexp?, #remove_kwsplat, #request_env?, #request_value?, #result?, #safe_literal, #safe_literal?, #safe_literal_target?, #set_env_defaults, #sexp?, #simple_literal?, #string?, #string_interp?, #symbol?, #template_path_to_name, #true?, #underscore

Methods included from ProcessorHelper

#current_file, #process_all, #process_all!, #process_call_args, #process_call_defn?, #process_class, #process_module

Methods inherited from SexpProcessor

#in_context, #initialize, #process, processors, #scope

Constructor Details

This class inherits a constructor from Brakeman::BaseCheck

Instance Method Details

#run_check ⇒ Object 



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
 
# File 'lib/brakeman/checks/check_translate_bug.rb', line 9

def run_check
  return if lts_version? '2.3.18.6'
  if (version_between?('2.3.0', '2.3.99') and tracker.config.escape_html?) or
      version_between?('3.0.0', '3.0.10') or
      version_between?('3.1.0', '3.1.1')

    confidence = if uses_translate?
      :high
    else
      :medium
    end

    description = [" has a vulnerability in the translate helper with keys ending in ", msg_code("_html")]

    message = if rails_version =~ /^3\.1/
                msg(msg_version(rails_version), *description, ". Upgrade to ", msg_version("3.1.2"))
              elsif rails_version =~ /^3\.0/
                msg(msg_version(rails_version), *description, ". Upgrade to ", msg_version("3.0.11"))
              else
                msg("Rails 2.3.x using the rails_xss plugin", *description)
              end

    warn :warning_type => "Cross-Site Scripting",
      :warning_code => :translate_vuln,
      :message => message,
      :confidence => confidence,
      :gem_info => gemfile_or_environment,
      :link_path => "http://groups.google.com/group/rubyonrails-security/browse_thread/thread/2b61d70fb73c7cc5"
  end
end

#uses_translate? ⇒ Boolean

Returns:

  • (Boolean) 


40
41
42
43
44
 
# File 'lib/brakeman/checks/check_translate_bug.rb', line 40

def uses_translate?
  Brakeman.debug "Finding calls to translate() or t()"

  tracker.find_call(:target => nil, :methods => [:t, :translate]).any?
end