From 60c3fea3271468dd1f9e9c5fae2d22dd9778293b Mon Sep 17 00:00:00 2001 From: Nick Mills-Barrett Date: Wed, 7 Dec 2022 17:35:41 +0000 Subject: [PATCH] Reject receipt requests with invalid room or event IDs. (#14632) If the room or event IDs are empty or of an invalid form they should be rejected. --- changelog.d/14632.bugfix | 1 + synapse/rest/client/receipts.py | 5 +- tests/rest/client/test_receipts.py | 76 ++++++++++++++++++++++++++++++ 3 files changed, 81 insertions(+), 1 deletion(-) create mode 100644 changelog.d/14632.bugfix create mode 100644 tests/rest/client/test_receipts.py diff --git a/changelog.d/14632.bugfix b/changelog.d/14632.bugfix new file mode 100644 index 000000000..323d10f1b --- /dev/null +++ b/changelog.d/14632.bugfix @@ -0,0 +1 @@ +Reject invalid read receipt requests with empty room or event IDs. Contributed by Nick @ Beeper (@fizzadar). diff --git a/synapse/rest/client/receipts.py b/synapse/rest/client/receipts.py index 18a282b22..28b7d30ea 100644 --- a/synapse/rest/client/receipts.py +++ b/synapse/rest/client/receipts.py @@ -20,7 +20,7 @@ from synapse.api.errors import Codes, SynapseError from synapse.http.server import HttpServer from synapse.http.servlet import RestServlet, parse_json_object_from_request from synapse.http.site import SynapseRequest -from synapse.types import JsonDict +from synapse.types import EventID, JsonDict, RoomID from ._base import client_patterns @@ -56,6 +56,9 @@ class ReceiptRestServlet(RestServlet): ) -> Tuple[int, JsonDict]: requester = await self.auth.get_user_by_req(request) + if not RoomID.is_valid(room_id) or not event_id.startswith(EventID.SIGIL): + raise SynapseError(400, "A valid room ID and event ID must be specified") + if receipt_type not in self._known_receipt_types: raise SynapseError( 400, diff --git a/tests/rest/client/test_receipts.py b/tests/rest/client/test_receipts.py new file mode 100644 index 000000000..2a7fcea38 --- /dev/null +++ b/tests/rest/client/test_receipts.py @@ -0,0 +1,76 @@ +# Copyright 2022 The Matrix.org Foundation C.I.C. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +from twisted.test.proto_helpers import MemoryReactor + +import synapse.rest.admin +from synapse.rest.client import login, receipts, register +from synapse.server import HomeServer +from synapse.util import Clock + +from tests import unittest + + +class ReceiptsTestCase(unittest.HomeserverTestCase): + servlets = [ + login.register_servlets, + register.register_servlets, + receipts.register_servlets, + synapse.rest.admin.register_servlets, + ] + + def prepare(self, reactor: MemoryReactor, clock: Clock, hs: HomeServer) -> None: + self.owner = self.register_user("owner", "pass") + self.owner_tok = self.login("owner", "pass") + + def test_send_receipt(self) -> None: + channel = self.make_request( + "POST", + "/rooms/!abc:beep/receipt/m.read/$def", + content={}, + access_token=self.owner_tok, + ) + self.assertEqual(channel.code, 200, channel.result) + + def test_send_receipt_invalid_room_id(self) -> None: + channel = self.make_request( + "POST", + "/rooms/not-a-room-id/receipt/m.read/$def", + content={}, + access_token=self.owner_tok, + ) + self.assertEqual(channel.code, 400, channel.result) + self.assertEqual( + channel.json_body["error"], "A valid room ID and event ID must be specified" + ) + + def test_send_receipt_invalid_event_id(self) -> None: + channel = self.make_request( + "POST", + "/rooms/!abc:beep/receipt/m.read/not-an-event-id", + content={}, + access_token=self.owner_tok, + ) + self.assertEqual(channel.code, 400, channel.result) + self.assertEqual( + channel.json_body["error"], "A valid room ID and event ID must be specified" + ) + + def test_send_receipt_invalid_receipt_type(self) -> None: + channel = self.make_request( + "POST", + "/rooms/!abc:beep/receipt/invalid-receipt-type/$def", + content={}, + access_token=self.owner_tok, + ) + self.assertEqual(channel.code, 400, channel.result)