===========================
SECURITY FIXES
--------------
- Fix a potential issue where servers could request events for rooms they have not joined. (`#3641 <https://github.com/matrix-org/synapse/issues/3641>`_)
- Fix a potential issue where users could see events in private rooms before they joined. (`#3642 <https://github.com/matrix-org/synapse/issues/3642>`_)
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iQEcBAABAgAGBQJbYxcCAAoJEIofk9V1tejVg8YIAJU1xoZ2zSnordJczpvVZbzx
Rsstk/wvE2dSGJL22gfSLzQNCbQvF4aOul1LAGJfbEQWc46BcNpyuWUxjTd3FaF7
SfbWdkDh1w3ROSuiPA8j4CnH6EwP0w2itIBhFG7JpVEXjRgCyc1iMUl/oQESv82g
UQyr6t/G68mE8xHm0eqvNfCjVAMSZDAnOzYZa7vfZJBqlZiGHB6Z1nsvsS3nZqQd
BQQi/pQTXxsIL2egSvuycykiZtEZcm+QDRFi6hIatv5LRFOsQUqKVTB/D7XOoSbP
RPOzcaSjv4mZ9a4NBzFMVVzzTRbr2EnipPd2ePrnJoOnl2eNRO4Won8zl4h+OQc=
=U/ir
-----END PGP SIGNATURE-----
Merge tag 'v0.33.1'
Synapse 0.33.1 (2018-08-02)
===========================
SECURITY FIXES
--------------
- Fix a potential issue where servers could request events for rooms they have not joined. (`#3641 <https://github.com/matrix-org/synapse/issues/3641>`_)
- Fix a potential issue where users could see events in private rooms before they joined. (`#3642 <https://github.com/matrix-org/synapse/issues/3642>`_)
Make sure that the user has permission to view the requeseted event for
/event/{eventId} and /room/{roomId}/event/{eventId} requests.
Also check that the event is in the given room for
/room/{roomId}/event/{eventId}, for sanity.
When we get a federation request which refers to an event id, make sure that
said event is in the room the caller claims it is in.
(patch supplied by @turt2live)
This code brings the SimpleHttpClient into line with the
MatrixFederationHttpClient by having it raise HttpResponseExceptions when a
request fails (rather than trying to parse for matrix errors and maybe raising
MatrixCodeMessageException).
Then, whenever we were checking for MatrixCodeMessageException and turning them
into SynapseErrors, we now need to check for HttpResponseExceptions and call
to_synapse_error.
This commit replaces SynapseError.from_http_response_exception with
HttpResponseException.to_synapse_error.
The new method actually returns a ProxiedRequestError, which allows us to pass
through additional metadata from the API call.
We really shouldn't be sending all CodeMessageExceptions back over the C-S API;
it will include things like 401s which we shouldn't proxy.
That means that we need to explicitly turn a few HttpResponseExceptions into
SynapseErrors in the federation layer.
The effect of the latter is that the matrix errcode will get passed through
correctly to calling clients, which might help with some of the random
M_UNKNOWN errors when trying to join rooms.
Amber Brown