diff options
Diffstat (limited to 'actionpack')
| -rw-r--r-- | actionpack/CHANGELOG.md | 16 | ||||
| -rw-r--r-- | actionpack/lib/abstract_controller/caching/fragments.rb | 2 | ||||
| -rw-r--r-- | actionpack/lib/action_controller/metal/request_forgery_protection.rb | 15 | ||||
| -rw-r--r-- | actionpack/lib/action_controller/renderer.rb | 2 | ||||
| -rw-r--r-- | actionpack/lib/action_dispatch/http/parameter_filter.rb | 5 | ||||
| -rw-r--r-- | actionpack/lib/action_dispatch/middleware/cookies.rb | 42 | ||||
| -rw-r--r-- | actionpack/lib/action_dispatch/railtie.rb | 1 | ||||
| -rw-r--r-- | actionpack/lib/action_dispatch/request/utils.rb | 2 | ||||
| -rw-r--r-- | actionpack/lib/action_dispatch/routing/inspector.rb | 2 | ||||
| -rw-r--r-- | actionpack/test/dispatch/cookies_test.rb | 162 | ||||
| -rw-r--r-- | actionpack/test/dispatch/exception_wrapper_test.rb | 1 |
11 files changed, 228 insertions, 22 deletions
diff --git a/actionpack/CHANGELOG.md b/actionpack/CHANGELOG.md index a5497aa055..a30f178190 100644 --- a/actionpack/CHANGELOG.md +++ b/actionpack/CHANGELOG.md @@ -1,3 +1,19 @@ +* 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. + + Pull Request: #32937 + + *Assain Jaleel* + * Raises `ActionController::RespondToMismatchError` with confliciting `respond_to` invocations. `respond_to` can match multiple types and lead to undefined behavior when diff --git a/actionpack/lib/abstract_controller/caching/fragments.rb b/actionpack/lib/abstract_controller/caching/fragments.rb index f99b0830b2..febd8a67a6 100644 --- a/actionpack/lib/abstract_controller/caching/fragments.rb +++ b/actionpack/lib/abstract_controller/caching/fragments.rb @@ -82,7 +82,7 @@ module AbstractController # Given a key (as described in +expire_fragment+), returns # a key array suitable for use in reading, writing, or expiring a # cached fragment. All keys begin with <tt>:views</tt>, - # followed by ENV["RAILS_CACHE_ID"] or ENV["RAILS_APP_VERSION"] if set, + # followed by <tt>ENV["RAILS_CACHE_ID"]</tt> or <tt>ENV["RAILS_APP_VERSION"]</tt> if set, # followed by any controller-wide key prefix values, ending # with the specified +key+ value. def combined_fragment_cache_key(key) diff --git a/actionpack/lib/action_controller/metal/request_forgery_protection.rb b/actionpack/lib/action_controller/metal/request_forgery_protection.rb index edfef39771..7ed7b9d546 100644 --- a/actionpack/lib/action_controller/metal/request_forgery_protection.rb +++ b/actionpack/lib/action_controller/metal/request_forgery_protection.rb @@ -17,7 +17,7 @@ module ActionController #:nodoc: # access. When a request reaches your application, \Rails verifies the received # token with the token in the session. All requests are checked except GET requests # as these should be idempotent. Keep in mind that all session-oriented requests - # should be CSRF protected, including JavaScript and HTML requests. + # are CSRF protected by default, including JavaScript and HTML requests. # # Since HTML and JavaScript requests are typically made from the browser, we # need to ensure to verify request authenticity for the web browser. We can @@ -30,16 +30,23 @@ module ActionController #:nodoc: # URL on your site. When your JavaScript response loads on their site, it executes. # With carefully crafted JavaScript on their end, sensitive data in your JavaScript # response may be extracted. To prevent this, only XmlHttpRequest (known as XHR or - # Ajax) requests are allowed to make GET requests for JavaScript responses. + # Ajax) requests are allowed to make requests for JavaScript responses. # - # It's important to remember that XML or JSON requests are also affected and if - # you're building an API you should change forgery protection method in + # It's important to remember that XML or JSON requests are also checked by default. If + # you're building an API or an SPA you could change forgery protection method in # <tt>ApplicationController</tt> (by default: <tt>:exception</tt>): # # class ApplicationController < ActionController::Base # protect_from_forgery unless: -> { request.format.json? } # end # + # It is generally safe to exclude XHR requests from CSRF protection + # (like the code snippet above does), because XHR requests can only be made from + # the same origin. Note however that any cross-origin third party domain + # allowed via {CORS}[https://en.wikipedia.org/wiki/Cross-origin_resource_sharing] + # will also be able to create XHR requests. Be sure to check your + # CORS whitelist before disabling forgery protection for XHR. + # # CSRF protection is turned on with the <tt>protect_from_forgery</tt> method. # By default <tt>protect_from_forgery</tt> protects your session with # <tt>:null_session</tt> method, which provides an empty session diff --git a/actionpack/lib/action_controller/renderer.rb b/actionpack/lib/action_controller/renderer.rb index 2d1523f0fc..2b4559c760 100644 --- a/actionpack/lib/action_controller/renderer.rb +++ b/actionpack/lib/action_controller/renderer.rb @@ -81,7 +81,7 @@ module ActionController # * <tt>:html</tt> - Renders the provided HTML safe string, otherwise # performs HTML escape on the string first. Sets the content type as <tt>text/html</tt>. # * <tt>:json</tt> - Renders the provided hash or object in JSON. You don't - # need to call <tt>.to_json<tt> on the object you want to render. + # need to call <tt>.to_json</tt> on the object you want to render. # * <tt>:body</tt> - Renders provided text and sets content type of <tt>text/plain</tt>. # # If no <tt>options</tt> hash is passed or if <tt>:update</tt> is specified, the default is diff --git a/actionpack/lib/action_dispatch/http/parameter_filter.rb b/actionpack/lib/action_dispatch/http/parameter_filter.rb index 1d58964862..de11939fa8 100644 --- a/actionpack/lib/action_dispatch/http/parameter_filter.rb +++ b/actionpack/lib/action_dispatch/http/parameter_filter.rb @@ -1,6 +1,7 @@ # frozen_string_literal: true require "active_support/core_ext/object/duplicable" +require "active_support/core_ext/array/extract" module ActionDispatch module Http @@ -38,8 +39,8 @@ module ActionDispatch end end - deep_regexps, regexps = regexps.partition { |r| r.to_s.include?("\\.".freeze) } - deep_strings, strings = strings.partition { |s| s.include?("\\.".freeze) } + deep_regexps = regexps.extract! { |r| r.to_s.include?("\\.".freeze) } + deep_strings = strings.extract! { |s| s.include?("\\.".freeze) } regexps << Regexp.new(strings.join("|".freeze), true) unless strings.empty? deep_regexps << Regexp.new(deep_strings.join("|".freeze), true) unless deep_strings.empty? diff --git a/actionpack/lib/action_dispatch/middleware/cookies.rb b/actionpack/lib/action_dispatch/middleware/cookies.rb index c45d947904..34331b7e4b 100644 --- a/actionpack/lib/action_dispatch/middleware/cookies.rb +++ b/actionpack/lib/action_dispatch/middleware/cookies.rb @@ -81,6 +81,10 @@ module ActionDispatch get_header Cookies::COOKIES_ROTATIONS end + def use_cookies_with_metadata + get_header Cookies::USE_COOKIES_WITH_METADATA + end + # :startdoc: end @@ -182,6 +186,7 @@ module ActionDispatch COOKIES_SERIALIZER = "action_dispatch.cookies_serializer".freeze COOKIES_DIGEST = "action_dispatch.cookies_digest".freeze COOKIES_ROTATIONS = "action_dispatch.cookies_rotations".freeze + USE_COOKIES_WITH_METADATA = "action_dispatch.use_cookies_with_metadata".freeze # Cookies can typically store 4096 bytes. MAX_COOKIE_SIZE = 4096 @@ -470,7 +475,7 @@ module ActionDispatch def [](name) if data = @parent_jar[name.to_s] - parse name, data + parse(name, data, purpose: "cookie.#{name}") || parse(name, data) end end @@ -481,7 +486,7 @@ module ActionDispatch options = { value: options } end - commit(options) + commit(name, options) @parent_jar[name] = options end @@ -497,13 +502,24 @@ module ActionDispatch end end - def parse(name, data); data; end - def commit(options); end + def cookie_metadata(name, options) + if request.use_cookies_with_metadata + metadata = expiry_options(options) + metadata[:purpose] = "cookie.#{name}" + + metadata + else + {} + end + end + + def parse(name, data, purpose: nil); data; end + def commit(name, options); end end class PermanentCookieJar < AbstractCookieJar # :nodoc: private - def commit(options) + def commit(name, options) options[:expires] = 20.years.from_now end end @@ -583,14 +599,14 @@ module ActionDispatch end private - def parse(name, signed_message) + def parse(name, signed_message, purpose: nil) deserialize(name) do |rotate| - @verifier.verified(signed_message, on_rotation: rotate) + @verifier.verified(signed_message, on_rotation: rotate, purpose: purpose) end end - def commit(options) - options[:value] = @verifier.generate(serialize(options[:value]), expiry_options(options)) + def commit(name, options) + options[:value] = @verifier.generate(serialize(options[:value]), cookie_metadata(name, options)) raise CookieOverflow if options[:value].bytesize > MAX_COOKIE_SIZE end @@ -631,16 +647,16 @@ module ActionDispatch end private - def parse(name, encrypted_message) + def parse(name, encrypted_message, purpose: nil) deserialize(name) do |rotate| - @encryptor.decrypt_and_verify(encrypted_message, on_rotation: rotate) + @encryptor.decrypt_and_verify(encrypted_message, on_rotation: rotate, purpose: purpose) end rescue ActiveSupport::MessageEncryptor::InvalidMessage, ActiveSupport::MessageVerifier::InvalidSignature parse_legacy_signed_message(name, encrypted_message) end - def commit(options) - options[:value] = @encryptor.encrypt_and_sign(serialize(options[:value]), expiry_options(options)) + def commit(name, options) + options[:value] = @encryptor.encrypt_and_sign(serialize(options[:value]), cookie_metadata(name, options)) raise CookieOverflow if options[:value].bytesize > MAX_COOKIE_SIZE end diff --git a/actionpack/lib/action_dispatch/railtie.rb b/actionpack/lib/action_dispatch/railtie.rb index eb6fbca6ba..efc3988bc3 100644 --- a/actionpack/lib/action_dispatch/railtie.rb +++ b/actionpack/lib/action_dispatch/railtie.rb @@ -21,6 +21,7 @@ module ActionDispatch config.action_dispatch.encrypted_signed_cookie_salt = "signed encrypted cookie" config.action_dispatch.authenticated_encrypted_cookie_salt = "authenticated encrypted cookie" config.action_dispatch.use_authenticated_cookie_encryption = false + config.action_dispatch.use_cookies_with_metadata = false config.action_dispatch.perform_deep_munge = true config.action_dispatch.default_headers = { diff --git a/actionpack/lib/action_dispatch/request/utils.rb b/actionpack/lib/action_dispatch/request/utils.rb index 0ae464082d..fb0efb9a58 100644 --- a/actionpack/lib/action_dispatch/request/utils.rb +++ b/actionpack/lib/action_dispatch/request/utils.rb @@ -1,5 +1,7 @@ # frozen_string_literal: true +require "active_support/core_ext/hash/indifferent_access" + module ActionDispatch class Request class Utils # :nodoc: diff --git a/actionpack/lib/action_dispatch/routing/inspector.rb b/actionpack/lib/action_dispatch/routing/inspector.rb index cba49d1a0b..413e524ef6 100644 --- a/actionpack/lib/action_dispatch/routing/inspector.rb +++ b/actionpack/lib/action_dispatch/routing/inspector.rb @@ -83,7 +83,7 @@ module ActionDispatch private def normalize_filter(filter) if filter[:controller] - { controller: /#{filter[:controller].downcase.sub(/_?controller\z/, '').sub('::', '/')}/ } + { controller: /#{filter[:controller].underscore.sub(/_?controller\z/, "")}/ } elsif filter[:grep] { controller: /#{filter[:grep]}/, action: /#{filter[:grep]}/, verb: /#{filter[:grep]}/, name: /#{filter[:grep]}/, path: /#{filter[:grep]}/ } diff --git a/actionpack/test/dispatch/cookies_test.rb b/actionpack/test/dispatch/cookies_test.rb index aba778fad6..6637c2cae9 100644 --- a/actionpack/test/dispatch/cookies_test.rb +++ b/actionpack/test/dispatch/cookies_test.rb @@ -289,6 +289,46 @@ class CookiesTest < ActionController::TestCase cookies[:user_name] = { value: "assain", expires: 2.hours } head :ok end + + def encrypted_discount_and_user_id_cookie + cookies.encrypted[:user_id] = { value: 50, expires: 1.hour } + cookies.encrypted[:discount_percentage] = 10 + + head :ok + end + + def signed_discount_and_user_id_cookie + cookies.signed[:user_id] = { value: 50, expires: 1.hour } + cookies.signed[:discount_percentage] = 10 + + head :ok + end + + def rails_5_2_stable_encrypted_cookie_with_authenticated_encryption_flag_on + # cookies.encrypted[:favorite] = { value: "5-2-Stable Chocolate Cookies", expires: 1000.years } + cookies[:favorite] = "KvH5lIHvX5vPQkLIK63r/NuIMwzWky8M0Zwk8SZ6DwUv8+srf36geR4nWq5KmhsZIYXA8NRdCZYIfxMKJsOFlz77Gf+Fq8vBBCWJTp95rx39A28TCUTJEyMhCNJO5eie7Skef76Qt5Jo/SCnIADAhzyGQkGBopKRcA==--qXZZFWGbCy6N8AGy--WswoH+xHrNh9MzSXDpB2fA==" + + head :ok + end + + def rails_5_2_stable_encrypted_cookie_with_authenticated_encryption_flag_off + cookies[:favorite] = "Wmg4amgvcVVvWGcwK3c4WjJEbTdRQUgrWXhBdDliUTR0cVNidXpmVTMrc2RjcitwUzVsWWEwZGtuVGtFUjJwNi0tcVhVMTFMOTQ1d0hIVE1FK0pJc05SQT09--8b2a55c375049a50f7a959b9d42b31ef0b2bb594" + + head :ok + end + + def rails_5_2_stable_signed_cookie_with_authenticated_encryption_flag_on + # cookies.signed[:favorite] = { value: "5-2-Stable Choco Chip Cookie", expires: 1000.years } + cookies[:favorite] = "eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaEpJaUUxTFRJdFUzUmhZbXhsSUVOb2IyTnZJRU5vYVhBZ1EyOXZhMmxsQmpvR1JWUT0iLCJleHAiOiIzMDE4LTA3LTExVDE2OjExOjI2Ljc1M1oiLCJwdXIiOm51bGx9fQ==--7df5d885b78b70a501d6e82140ae91b24060ac00" + + head :ok + end + + def rails_5_2_stable_signed_cookie_with_authenticated_encryption_flag_off + cookies[:favorite] = "BAhJIiE1LTItU3RhYmxlIENob2NvIENoaXAgQ29va2llBjoGRVQ=--50bbdbf8d64f5a3ec3e54878f54d4f55b6cb3aff" + + head :ok + end end tests TestController @@ -1274,6 +1314,8 @@ class CookiesTest < ActionController::TestCase end def test_signed_cookie_with_expires_set_relatively + request.env["action_dispatch.use_cookies_with_metadata"] = true + cookies.signed[:user_name] = { value: "assain", expires: 2.hours } travel 1.hour @@ -1284,6 +1326,8 @@ class CookiesTest < ActionController::TestCase end def test_encrypted_cookie_with_expires_set_relatively + request.env["action_dispatch.use_cookies_with_metadata"] = true + cookies.encrypted[:user_name] = { value: "assain", expires: 2.hours } travel 1.hour @@ -1300,6 +1344,124 @@ class CookiesTest < ActionController::TestCase end end + def test_purpose_metadata_for_encrypted_cookies + get :encrypted_discount_and_user_id_cookie + + cookies[:discount_percentage] = cookies[:user_id] + assert_equal 50, cookies.encrypted[:discount_percentage] + + request.env["action_dispatch.use_cookies_with_metadata"] = true + + get :encrypted_discount_and_user_id_cookie + + cookies[:discount_percentage] = cookies[:user_id] + assert_nil cookies.encrypted[:discount_percentage] + end + + def test_purpose_metadata_for_signed_cookies + get :signed_discount_and_user_id_cookie + + cookies[:discount_percentage] = cookies[:user_id] + assert_equal 50, cookies.signed[:discount_percentage] + + request.env["action_dispatch.use_cookies_with_metadata"] = true + + get :signed_discount_and_user_id_cookie + + cookies[:discount_percentage] = cookies[:user_id] + assert_nil cookies.signed[:discount_percentage] + end + + def test_switch_off_metadata_for_encrypted_cookies_if_config_is_false + request.env["action_dispatch.use_cookies_with_metadata"] = false + + get :encrypted_discount_and_user_id_cookie + + travel 2.hours + assert_equal 50, cookies.encrypted[:user_id] + + cookies[:discount_percentage] = cookies[:user_id] + assert_not_equal 10, cookies.encrypted[:discount_percentage] + assert_equal 50, cookies.encrypted[:discount_percentage] + end + + def test_switch_off_metadata_for_signed_cookies_if_config_is_false + request.env["action_dispatch.use_cookies_with_metadata"] = false + + get :signed_discount_and_user_id_cookie + + travel 2.hours + assert_equal 50, cookies.signed[:user_id] + + cookies[:discount_percentage] = cookies[:user_id] + assert_not_equal 10, cookies.signed[:discount_percentage] + assert_equal 50, cookies.signed[:discount_percentage] + end + + def test_read_rails_5_2_stable_encrypted_cookies_if_config_is_false + request.env["action_dispatch.use_cookies_with_metadata"] = false + + get :rails_5_2_stable_encrypted_cookie_with_authenticated_encryption_flag_on + + assert_equal "5-2-Stable Chocolate Cookies", cookies.encrypted[:favorite] + + travel 1001.years do + assert_nil cookies.encrypted[:favorite] + end + + get :rails_5_2_stable_encrypted_cookie_with_authenticated_encryption_flag_off + + assert_equal "5-2-Stable Chocolate Cookies", cookies.encrypted[:favorite] + end + + def test_read_rails_5_2_stable_signed_cookies_if_config_is_false + request.env["action_dispatch.use_cookies_with_metadata"] = false + + get :rails_5_2_stable_signed_cookie_with_authenticated_encryption_flag_on + + assert_equal "5-2-Stable Choco Chip Cookie", cookies.signed[:favorite] + + travel 1001.years do + assert_nil cookies.signed[:favorite] + end + + get :rails_5_2_stable_signed_cookie_with_authenticated_encryption_flag_off + + assert_equal "5-2-Stable Choco Chip Cookie", cookies.signed[:favorite] + end + + def test_read_rails_5_2_stable_encrypted_cookies_if_use_metadata_config_is_true + request.env["action_dispatch.use_cookies_with_metadata"] = true + + get :rails_5_2_stable_encrypted_cookie_with_authenticated_encryption_flag_on + + assert_equal "5-2-Stable Chocolate Cookies", cookies.encrypted[:favorite] + + travel 1001.years do + assert_nil cookies.encrypted[:favorite] + end + + get :rails_5_2_stable_encrypted_cookie_with_authenticated_encryption_flag_off + + assert_equal "5-2-Stable Chocolate Cookies", cookies.encrypted[:favorite] + end + + def test_read_rails_5_2_stable_signed_cookies_if_use_metadata_config_is_true + request.env["action_dispatch.use_cookies_with_metadata"] = true + + get :rails_5_2_stable_signed_cookie_with_authenticated_encryption_flag_on + + assert_equal "5-2-Stable Choco Chip Cookie", cookies.signed[:favorite] + + travel 1001.years do + assert_nil cookies.signed[:favorite] + end + + get :rails_5_2_stable_signed_cookie_with_authenticated_encryption_flag_off + + assert_equal "5-2-Stable Choco Chip Cookie", cookies.signed[:favorite] + end + private def assert_cookie_header(expected) header = @response.headers["Set-Cookie"] diff --git a/actionpack/test/dispatch/exception_wrapper_test.rb b/actionpack/test/dispatch/exception_wrapper_test.rb index 600280d6b3..668469a01d 100644 --- a/actionpack/test/dispatch/exception_wrapper_test.rb +++ b/actionpack/test/dispatch/exception_wrapper_test.rb @@ -20,6 +20,7 @@ module ActionDispatch setup do @cleaner = ActiveSupport::BacktraceCleaner.new + @cleaner.remove_filters! @cleaner.add_silencer { |line| line !~ /^lib/ } end |