Class: Brakeman::CheckRenderDoS

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

Instance Method Summary collapse

Instance Method Details

#run_check ⇒ Object 



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

def run_check
  if version_between? "3.0.0", "3.0.20" or
     version_between? "3.1.0", "3.1.12" or
     version_between? "3.2.0", "3.2.16"

    tracker.find_call(:target => nil, :method => :render).each do |result|
      if text_render? result
        warn_about_text_render
        break
      end
    end
  end
end

#text_render?(result) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/brakeman/checks/check_render_dos.rb', line 22

def text_render? result
  node_type? result[:call], :render and
  result[:call].render_type == :text
end

#warn_about_text_render ⇒ Object 



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# File 'lib/brakeman/checks/check_render_dos.rb', line 27

def warn_about_text_render
  message = msg(msg_version(rails_version), " has a denial of service vulnerability ", msg_cve("CVE-2014-0082"), ". Upgrade to ", msg_version("3.2.17"))

  warn :warning_type => "Denial of Service",
    :warning_code => :CVE_2014_0082,
    :message => message,
    :confidence => :high,
    :link_path => "https://groups.google.com/d/msg/rubyonrails-security/LMxO_3_eCuc/ozGBEhKaJbIJ",
    :gem_info => gemfile_or_environment,
    :cwe_id => [20]
end