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Rails 6.0.4.1 (August 19, 2021)

  • [CVE-2021-22942] Fix possible open redirect in Host Authorization middleware.

    Specially crafted "X-Forwarded-Host" headers in combination with certain "allowed host" formats can cause the Host Authorization middleware in Action Pack to redirect users to a malicious website.

Rails 6.0.4 (June 15, 2021)

  • Accept base64_urlsafe CSRF tokens to make forward compatible.

    Base64 strict-encoded CSRF tokens are not inherently websafe, which makes them difficult to deal with. For example, the common practice of sending the CSRF token to a browser in a client-readable cookie does not work properly out of the box: the value has to be url-encoded and decoded to survive transport.

    In Rails 6.1, we generate Base64 urlsafe-encoded CSRF tokens, which are inherently safe to transport. Validation accepts both urlsafe tokens, and strict-encoded tokens for backwards compatibility.

    In Rails 5.2.5, the CSRF token format is accidentally changed to urlsafe-encoded. If you upgrade apps from 5.2.5, set the config urlsafe_csrf_tokens = true.

    Rails.application.config.action_controller.urlsafe_csrf_tokens = true

    Scott Blum, Étienne Barrié

  • Signed and encrypted cookies can now store false as their value when action_dispatch.use_cookies_with_metadata is enabled.

    Rolandas Barysas

Rails 6.0.3.7 (May 05, 2021)

  • Prevent catastrophic backtracking during mime parsing CVE-2021-22902

  • Prevent regex DoS in HTTP token authentication CVE-2021-22904

  • Prevent string polymorphic route arguments.

    url_for supports building polymorphic URLs via an array of arguments (usually symbols and records). If a developer passes a user input array, strings can result in unwanted route helper calls.

    CVE-2021-22885

    Gannon McGibbon

Rails 6.0.3.6 (March 26, 2021)

  • No changes.

Rails 6.0.3.5 (February 10, 2021)

  • Prevent open redirect when allowed host starts with a dot

    [CVE-2021-22881]

    Thanks to @tktech (https://hackerone.com/tktech) for reporting this issue and the patch!

    Aaron Patterson

Rails 6.0.3.4 (October 07, 2020)

  • [CVE-2020-8264] Prevent XSS in Actionable Exceptions

Rails 6.0.3.3 (September 09, 2020)

  • No changes.

Rails 6.0.3.2 (June 17, 2020)

  • [CVE-2020-8185] Only allow ActionableErrors if show_detailed_exceptions is enabled

Rails 6.0.3.1 (May 18, 2020)

  • [CVE-2020-8166] HMAC raw CSRF token before masking it, so it cannot be used to reconstruct a per-form token

  • [CVE-2020-8164] Return self when calling #each, #each_pair, and #each_value instead of the raw @parameters hash

Rails 6.0.3 (May 06, 2020)

  • Include child session assertion count in ActionDispatch::IntegrationTest

    IntegrationTest#open_session uses dup to create the new session, which meant it had its own copy of @assertions. This prevented the assertions from being correctly counted and reported.

    Child sessions now have their attr_accessor overriden to delegate to the root session.

    Fixes #32142

    Sam Bostock

Rails 6.0.2.2 (March 19, 2020)

  • No changes.

Rails 6.0.2.1 (December 18, 2019)

  • Fix possible information leak / session hijacking vulnerability.

    The ActionDispatch::Session::MemcacheStore is still vulnerable given it requires the gem dalli to be updated as well.

    CVE-2019-16782.

Rails 6.0.2 (December 13, 2019)

  • Allow using mountable engine route helpers in System Tests.

    Chalo Fernandez

Rails 6.0.1 (November 5, 2019)

  • ActionDispatch::SystemTestCase now inherits from ActiveSupport::TestCase rather than ActionDispatch::IntegrationTest. This permits running jobs in system tests.

    George Claghorn, Edouard Chin

  • Registered MIME types may contain extra flags:

    Mime::Type.register "text/html; fragment", :html_fragment

    Aaron Patterson

Rails 6.0.0 (August 16, 2019)

  • No changes.

Rails 6.0.0.rc2 (July 22, 2019)

  • Add the ability to set the CSP nonce only to the specified directives.

    Fixes #35137.

    Yuji Yaginuma

  • Keep part when scope option has value.

    When a route was defined within an optional scope, if that route didn't take parameters the scope was lost when using path helpers. This commit ensures scope is kept both when the route takes parameters or when it doesn't.

    Fixes #33219

    Alberto Almagro

  • Change ActionDispatch::Response#content_type to return Content-Type header as it is.

    Previously, ActionDispatch::Response#content_type returned value does NOT contain charset part. This behavior changed to returned Content-Type header containing charset part as it is.

    If you want just MIME type, please use ActionDispatch::Response#media_type instead.

    Enable action_dispatch.return_only_media_type_on_content_type to use this change. If not enabled, ActionDispatch::Response#content_type returns the same value as before version, but its behavior is deprecate.

    Yuji Yaginuma

  • Calling ActionController::Parameters#transform_keys/! without a block now returns an enumerator for the parameters instead of the underlying hash.

    Eugene Kenny

  • Fix a bug where DebugExceptions throws an error when malformed query parameters are provided

    Yuki Nishijima, Stan Lo

Rails 6.0.0.rc1 (April 24, 2019)

  • Make system tests take a failed screenshot in a before_teardown hook rather than an after_teardown hook.

    This helps minimize the time gap between when an assertion fails and when the screenshot is taken (reducing the time in which the page could have been dynamically updated after the assertion failed).

    Richard Macklin

  • Introduce ActionDispatch::ActionableExceptions.

    The ActionDispatch::ActionableExceptions middleware dispatches actions from ActiveSupport::ActionableError descendants.

    Actionable errors let's you dispatch actions from Rails' error pages.

    Vipul A M, Yao Jie, Genadi Samokovarov

  • Raise an ArgumentError if a resource custom param contains a colon (:).

    After this change it's not possible anymore to configure routes like this:

    routes.draw do
      resources :users, param: 'name/:sneaky'
    end
    

    Fixes #30467.

    Josua Schmid

Rails 6.0.0.beta3 (March 11, 2019)

  • No changes.

Rails 6.0.0.beta2 (February 25, 2019)

  • Make debug exceptions works in an environment where ActiveStorage is not loaded.

    Tomoyuki Kurosawa

  • ActionDispatch::SystemTestCase.driven_by can now be called with a block to define specific browser capabilities.

    Edouard Chin

Rails 6.0.0.beta1 (January 18, 2019)

  • Remove deprecated fragment_cache_key helper in favor of combined_fragment_cache_key.

    Rafael Mendonça França

  • Remove deprecated methods in ActionDispatch::TestResponse.

    #success?, missing? and error? were deprecated in Rails 5.2 in favor of #successful?, not_found? and server_error?.

    Rafael Mendonça França

  • Introduce ActionDispatch::HostAuthorization.

    This is a new middleware that guards against DNS rebinding attacks by explicitly permitting the hosts a request can be made to.

    Each host is checked with the case operator (#===) to support Regexp, Proc, IPAddr and custom objects as host allowances.

    Genadi Samokovarov

  • Allow using parsed_body in ActionController::TestCase.

    In addition to ActionDispatch::IntegrationTest, allow using parsed_body in ActionController::TestCase:

    class SomeControllerTest < ActionController::TestCase
      def test_some_action
        post :action, body: { foo: 'bar' }
        assert_equal({ "foo" => "bar" }, response.parsed_body)
      end
    end
    

    Fixes #34676.

    Tobias Bühlmann

  • Raise an error on root route naming conflicts.

    Raises an ArgumentError when multiple root routes are defined in the same context instead of assigning nil names to subsequent roots.

    Gannon McGibbon

  • Allow rescue from parameter parse errors:

    rescue_from ActionDispatch::Http::Parameters::ParseError do
      head :unauthorized
    end
    

    Gannon McGibbon, Josh Cheek

  • Reset Capybara sessions if failed system test screenshot raising an exception.

    Reset Capybara sessions if take_failed_screenshot raise exception in system test after_teardown.

    Maxim Perepelitsa

  • Use request object for context if there's no controller

    There is no controller instance when using a redirect route or a mounted rack application so pass the request object as the context when resolving dynamic CSP sources in this scenario.

    Fixes #34200.

    Andrew White

  • Apply mapping to symbols returned from dynamic CSP sources

    Previously if a dynamic source returned a symbol such as :self it would be converted to a string implicitly, e.g:

    policy.default_src -> { :self }
    

    would generate the header:

    Content-Security-Policy: default-src self
    

    and now it generates:

    Content-Security-Policy: default-src 'self'
    

    Andrew White

  • Add ActionController::Parameters#each_value.

    Lukáš Zapletal

  • Deprecate ActionDispatch::Http::ParameterFilter in favor of ActiveSupport::ParameterFilter.

    Yoshiyuki Kinjo

  • Encode Content-Disposition filenames on send_data and send_file. Previously, send_data 'data', filename: "\u{3042}.txt" sends "filename=\"\u{3042}.txt\"" as Content-Disposition and it can be garbled. Now it follows RFC 2231 and RFC 5987 and sends "filename=\"%3F.txt\"; filename*=UTF-8''%E3%81%82.txt". Most browsers can find filename correctly and old browsers fallback to ASCII converted name.

    Fumiaki Matsushima

  • Expose ActionController::Parameters#each_key which allows iterating over keys without allocating an array.

    Richard Schneeman

  • Purpose metadata for signed/encrypted cookies.

    Rails can now thwart attacks that attempt to copy signed/encrypted value of a cookie and use it as the value of another cookie.

    It does so by stashing the cookie-name in the purpose field which is then signed/encrypted along with the cookie value. Then, on a server-side read, we verify the cookie-names and discard any attacked cookies.

    Enable action_dispatch.use_cookies_with_metadata to use this feature, which writes cookies with the new purpose and expiry metadata embedded.

    Assain Jaleel

  • Raises ActionController::RespondToMismatchError with conflicting respond_to invocations.

    respond_to can match multiple types and lead to undefined behavior when multiple invocations are made and the types do not match:

    respond_to do |outer_type|
      outer_type.js do
        respond_to do |inner_type|
          inner_type.html { render body: "HTML" }
        end
      end
    end
    

    Patrick Toomey

  • ActionDispatch::Http::UploadedFile now delegates to_path to its tempfile.

    This allows uploaded file objects to be passed directly to File.read without raising a TypeError:

    uploaded_file = ActionDispatch::Http::UploadedFile.new(tempfile: tmp_file)
    File.read(uploaded_file)
    

    Aaron Kromer

  • Pass along arguments to underlying get method in follow_redirect!

    Now all arguments passed to follow_redirect! are passed to the underlying get method. This for example allows to set custom headers for the redirection request to the server.

    follow_redirect!(params: { foo: :bar })
    

    Remo Fritzsche

  • Introduce a new error page to when the implicit render page is accessed in the browser.

    Now instead of showing an error page that with exception and backtraces we now show only one informative page.

    Vinicius Stock

  • Introduce ActionDispatch::DebugExceptions.register_interceptor.

    Exception aware plugin authors can use the newly introduced .register_interceptor method to get the processed exception, instead of monkey patching DebugExceptions.

    ActionDispatch::DebugExceptions.register_interceptor do |request, exception|
      HypoteticalPlugin.capture_exception(request, exception)
    end
    

    Genadi Samokovarov

  • Output only one Content-Security-Policy nonce header value per request.

    Fixes #32597.

    Andrey Novikov, Andrew White

  • Move default headers configuration into their own module that can be included in controllers.

    Kevin Deisz

  • Add method dig to session.

    claudiob, Takumi Shotoku

  • Controller level force_ssl has been deprecated in favor of config.force_ssl.

    Derek Prior

  • Rails 6 requires Ruby 2.5.0 or newer.

    Jeremy Daer, Kasper Timm Hansen

Please check 5-2-stable for previous changes.