diff options
Diffstat (limited to 'actionpack/lib/action_dispatch/middleware/cookies.rb')
| -rw-r--r-- | actionpack/lib/action_dispatch/middleware/cookies.rb | 54 |
1 files changed, 49 insertions, 5 deletions
diff --git a/actionpack/lib/action_dispatch/middleware/cookies.rb b/actionpack/lib/action_dispatch/middleware/cookies.rb index e565c03a8a..533925ebe1 100644 --- a/actionpack/lib/action_dispatch/middleware/cookies.rb +++ b/actionpack/lib/action_dispatch/middleware/cookies.rb @@ -43,6 +43,10 @@ module ActionDispatch get_header Cookies::ENCRYPTED_SIGNED_COOKIE_SALT end + def authenticated_encrypted_cookie_salt + get_header Cookies::AUTHENTICATED_ENCRYPTED_COOKIE_SALT + end + def secret_token get_header Cookies::SECRET_TOKEN end @@ -149,6 +153,7 @@ module ActionDispatch SIGNED_COOKIE_SALT = "action_dispatch.signed_cookie_salt".freeze ENCRYPTED_COOKIE_SALT = "action_dispatch.encrypted_cookie_salt".freeze ENCRYPTED_SIGNED_COOKIE_SALT = "action_dispatch.encrypted_signed_cookie_salt".freeze + AUTHENTICATED_ENCRYPTED_COOKIE_SALT = "action_dispatch.authenticated_encrypted_cookie_salt".freeze SECRET_TOKEN = "action_dispatch.secret_token".freeze SECRET_KEY_BASE = "action_dispatch.secret_key_base".freeze COOKIES_SERIALIZER = "action_dispatch.cookies_serializer".freeze @@ -207,6 +212,9 @@ module ActionDispatch # If +secrets.secret_key_base+ and +secrets.secret_token+ (deprecated) are both set, # legacy cookies signed with the old key generator will be transparently upgraded. # + # If +config.action_dispatch.encrypted_cookie_salt+ and +config.action_dispatch.encrypted_signed_cookie_salt+ + # are both set, legacy cookies encrypted with HMAC AES-256-CBC will be transparently upgraded. + # # This jar requires that you set a suitable secret for the verification on your app's +secrets.secret_key_base+. # # Example: @@ -219,6 +227,8 @@ module ActionDispatch @encrypted ||= if upgrade_legacy_signed_cookies? UpgradeLegacyEncryptedCookieJar.new(self) + elsif upgrade_legacy_hmac_aes_cbc_cookies? + UpgradeLegacyHmacAesCbcCookieJar.new(self) else EncryptedCookieJar.new(self) end @@ -240,6 +250,13 @@ module ActionDispatch def upgrade_legacy_signed_cookies? request.secret_token.present? && request.secret_key_base.present? end + + def upgrade_legacy_hmac_aes_cbc_cookies? + request.secret_key_base.present? && + request.authenticated_encrypted_cookie_salt.present? && + request.encrypted_signed_cookie_salt.present? && + request.encrypted_cookie_salt.present? + end end # Passing the ActiveSupport::MessageEncryptor::NullSerializer downstream @@ -415,8 +432,7 @@ module ActionDispatch end end - mattr_accessor :always_write_cookie - self.always_write_cookie = false + mattr_accessor :always_write_cookie, default: false private @@ -576,9 +592,11 @@ module ActionDispatch "Read the upgrade documentation to learn more about this new config option." end - secret = key_generator.generate_key(request.encrypted_cookie_salt || "")[0, ActiveSupport::MessageEncryptor.key_len] - sign_secret = key_generator.generate_key(request.encrypted_signed_cookie_salt || "") - @encryptor = ActiveSupport::MessageEncryptor.new(secret, sign_secret, digest: digest, serializer: ActiveSupport::MessageEncryptor::NullSerializer) + cipher = "aes-256-gcm" + key_len = ActiveSupport::MessageEncryptor.key_len(cipher) + secret = key_generator.generate_key(request.authenticated_encrypted_cookie_salt || "")[0, key_len] + + @encryptor = ActiveSupport::MessageEncryptor.new(secret, cipher: cipher, serializer: ActiveSupport::MessageEncryptor::NullSerializer) end private @@ -603,6 +621,32 @@ module ActionDispatch include VerifyAndUpgradeLegacySignedMessage end + # UpgradeLegacyHmacAesCbcCookieJar is used by ActionDispatch::Session::CookieStore + # to upgrade cookies encrypted with AES-256-CBC with HMAC to AES-256-GCM + class UpgradeLegacyHmacAesCbcCookieJar < EncryptedCookieJar + def initialize(parent_jar) + super + + secret = key_generator.generate_key(request.encrypted_cookie_salt || "")[0, ActiveSupport::MessageEncryptor.key_len] + sign_secret = key_generator.generate_key(request.encrypted_signed_cookie_salt || "") + + @legacy_encryptor = ActiveSupport::MessageEncryptor.new(secret, sign_secret, cipher: "aes-256-cbc", digest: digest, serializer: ActiveSupport::MessageEncryptor::NullSerializer) + end + + def decrypt_and_verify_legacy_encrypted_message(name, signed_message) + deserialize(name, @legacy_encryptor.decrypt_and_verify(signed_message)).tap do |value| + self[name] = { value: value } + end + rescue ActiveSupport::MessageVerifier::InvalidSignature, ActiveSupport::MessageEncryptor::InvalidMessage + nil + end + + private + def parse(name, signed_message) + super || decrypt_and_verify_legacy_encrypted_message(name, signed_message) + end + end + def initialize(app) @app = app end |