diff options
| -rw-r--r-- | changelog.d/6262.bugfix | 1 | ||||
| -rw-r--r-- | synapse/federation/federation_base.py | 7 | ||||
| -rw-r--r-- | synapse/federation/federation_server.py | 7 | ||||
| -rw-r--r-- | synapse/handlers/federation.py | 20 |
4 files changed, 28 insertions, 7 deletions
diff --git a/changelog.d/6262.bugfix b/changelog.d/6262.bugfix new file mode 100644 index 0000000000..32687f0d2b --- /dev/null +++ b/changelog.d/6262.bugfix @@ -0,0 +1 @@ +Improve signature checking on some federation APIs. diff --git a/synapse/federation/federation_base.py b/synapse/federation/federation_base.py index 5a1e23a145..223aace0d9 100644 --- a/synapse/federation/federation_base.py +++ b/synapse/federation/federation_base.py @@ -278,9 +278,7 @@ def _check_sigs_on_pdus(keyring, room_version, pdus): pdu_to_check.sender_domain, e.getErrorMessage(), ) - # XX not really sure if these are the right codes, but they are what - # we've done for ages - raise SynapseError(400, errmsg, Codes.UNAUTHORIZED) + raise SynapseError(403, errmsg, Codes.FORBIDDEN) for p, d in zip(pdus_to_check_sender, more_deferreds): d.addErrback(sender_err, p) @@ -314,8 +312,7 @@ def _check_sigs_on_pdus(keyring, room_version, pdus): "event id %s: unable to verify signature for event id domain: %s" % (pdu_to_check.pdu.event_id, e.getErrorMessage()) ) - # XX as above: not really sure if these are the right codes - raise SynapseError(400, errmsg, Codes.UNAUTHORIZED) + raise SynapseError(403, errmsg, Codes.FORBIDDEN) for p, d in zip(pdus_to_check_event_id, more_deferreds): d.addErrback(event_err, p) diff --git a/synapse/federation/federation_server.py b/synapse/federation/federation_server.py index 21e52c9695..5fc7c1d67b 100644 --- a/synapse/federation/federation_server.py +++ b/synapse/federation/federation_server.py @@ -370,6 +370,7 @@ class FederationServer(FederationBase): pdu = event_from_pdu_json(content, format_ver) origin_host, _ = parse_server_name(origin) yield self.check_server_matches_acl(origin_host, pdu.room_id) + pdu = yield self._check_sigs_and_hash(room_version, pdu) ret_pdu = yield self.handler.on_invite_request(origin, pdu) time_now = self._clock.time_msec() return {"event": ret_pdu.get_pdu_json(time_now)} @@ -386,6 +387,9 @@ class FederationServer(FederationBase): yield self.check_server_matches_acl(origin_host, pdu.room_id) logger.debug("on_send_join_request: pdu sigs: %s", pdu.signatures) + + pdu = yield self._check_sigs_and_hash(room_version, pdu) + res_pdus = yield self.handler.on_send_join_request(origin, pdu) time_now = self._clock.time_msec() return ( @@ -421,6 +425,9 @@ class FederationServer(FederationBase): yield self.check_server_matches_acl(origin_host, pdu.room_id) logger.debug("on_send_leave_request: pdu sigs: %s", pdu.signatures) + + pdu = yield self._check_sigs_and_hash(room_version, pdu) + yield self.handler.on_send_leave_request(origin, pdu) return 200, {} diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py index 4b4c6c15f9..488058fe68 100644 --- a/synapse/handlers/federation.py +++ b/synapse/handlers/federation.py @@ -1222,7 +1222,6 @@ class FederationHandler(BaseHandler): Returns: Deferred[FrozenEvent] """ - if get_domain_from_id(user_id) != origin: logger.info( "Got /make_join request for user %r from different origin %s, ignoring", @@ -1280,11 +1279,20 @@ class FederationHandler(BaseHandler): event = pdu logger.debug( - "on_send_join_request: Got event: %s, signatures: %s", + "on_send_join_request from %s: Got event: %s, signatures: %s", + origin, event.event_id, event.signatures, ) + if get_domain_from_id(event.sender) != origin: + logger.info( + "Got /send_join request for user %r from different origin %s", + event.sender, + origin, + ) + raise SynapseError(403, "User not from origin", Codes.FORBIDDEN) + event.internal_metadata.outlier = False # Send this event on behalf of the origin server. # @@ -1503,6 +1511,14 @@ class FederationHandler(BaseHandler): event.signatures, ) + if get_domain_from_id(event.sender) != origin: + logger.info( + "Got /send_leave request for user %r from different origin %s", + event.sender, + origin, + ) + raise SynapseError(403, "User not from origin", Codes.FORBIDDEN) + event.internal_metadata.outlier = False context = yield self._handle_new_event(origin, event) |