Class: Brakeman::CheckI18nXSS

Inherits:
BaseCheck
  • Object
show all
Defined in:
lib/brakeman/checks/check_i18n_xss.rb

Instance Method Summary collapse

Instance Method Details

#has_workaround? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/brakeman/checks/check_i18n_xss.rb', line 44

def has_workaround?
  tracker.find_call(target: :I18n, method: :const_defined?, chained: true).any? do |match|
    match[:call].first_arg == s(:lit, :MissingTranslation)
  end
end

#run_check ⇒ Object 



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# File 'lib/brakeman/checks/check_i18n_xss.rb', line 8

def run_check
  if (version_between? "3.0.6", "3.2.15" or version_between? "4.0.0", "4.0.1") and not has_workaround?
    i18n_gem = tracker.config.gem_version :i18n
    message = msg(msg_version(rails_version), " has an XSS vulnerability in ", msg_version(i18n_gem, "i18n"), " ", msg_cve("CVE-2013-4491"), ". Upgrade to ")

    if version_between? "3.0.6", "3.1.99" and version_before i18n_gem, "0.5.1"
      message << msg_version("3.2.16 or i18n 0.5.1")
    elsif version_between? "3.2.0", "4.0.1" and version_before i18n_gem, "0.6.6"
      message << msg_version("4.0.2 or i18n 0.6.6")
    else
      return
    end

    warn :warning_type => "Cross-Site Scripting",
      :warning_code => :CVE_2013_4491,
      :message => message,
      :confidence => :medium,
      :gem_info => gemfile_or_environment(:i18n),
      :link_path => "https://groups.google.com/d/msg/ruby-security-ann/pLrh6DUw998/bLFEyIO4k_EJ",
      :cwe_id => [79]
  end
end

#version_before(gem_version, target) ⇒ Object 



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# File 'lib/brakeman/checks/check_i18n_xss.rb', line 31

def version_before gem_version, target
  return true unless gem_version
  gem_version.split('.').map(&:to_i).zip(target.split('.').map(&:to_i)).each do |gv, t|
    if gv < t
      return true
    elsif gv > t
      return false
    end
  end

  false
end