When a user joined a room any existing tags were not sent down the sync
stream. Ordinarily this isn't a problem because the user needs to be in
the room to have set tags in it, however synapse will sometimes add tags
for a user to a room, e.g. for server notices, which need to come down
sync.
=============================
SECURITY FIXES
--------------
- Fix an issue where event signatures were not always correctly validated ([\#3796](https://github.com/matrix-org/synapse/issues/3796))
- Fix an issue where server_acls could be circumvented for incoming events ([\#3796](https://github.com/matrix-org/synapse/issues/3796))
Internal Changes
----------------
- Unignore synctl in .dockerignore to fix docker builds ([\#3802](https://github.com/matrix-org/synapse/issues/3802))
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
iQEcBAABCAAGBQJbkPLrAAoJEIofk9V1tejV7K4IAItYIX98DKN9x3FNs9Hd69Pw
mZtqmuJ12YAyiVZoR7IJ5GfyctHCYUUXcqmNR1O+2/IRvezFnU6ZTcPW3OfNfnuD
vlnMiK53F21T96ul3Wu47Z2wyO+WkoKeXdvlqt3Wa8HpnPbU6y5CSac2vK57ppTU
DcMZKXaDae6vA7bsjryYgTRRplH6eFWZEexjbuZudbDvqkySi2zGUTs6SUesMC5B
FRPgI6p6sCeQgGMJY+d1i+ZdzWkZhH5OLH2icf2MI1hnhSnRSJ/scSGm5OYDCwYy
03hOy0ZVMr8SB5/j0TjSaFXonKsmPKqxnU2g7crJmvFP4BfJrEbym0y9YhYXnVQ=
=8PDU
-----END PGP SIGNATURE-----
Merge tag 'v0.33.3.1' into release-v0.33.4
Synapse 0.33.3.1 (2018-09-06)
=============================
SECURITY FIXES
--------------
- Fix an issue where event signatures were not always correctly validated ([\#3796](https://github.com/matrix-org/synapse/issues/3796))
- Fix an issue where server_acls could be circumvented for incoming events ([\#3796](https://github.com/matrix-org/synapse/issues/3796))
Internal Changes
----------------
- Unignore synctl in .dockerignore to fix docker builds ([\#3802](https://github.com/matrix-org/synapse/issues/3802))
=============================
SECURITY FIXES
--------------
- Fix an issue where event signatures were not always correctly validated ([\#3796](https://github.com/matrix-org/synapse/issues/3796))
- Fix an issue where server_acls could be circumvented for incoming events ([\#3796](https://github.com/matrix-org/synapse/issues/3796))
Internal Changes
----------------
- Unignore synctl in .dockerignore to fix docker builds ([\#3802](https://github.com/matrix-org/synapse/issues/3802))
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
iQEcBAABCAAGBQJbkPLrAAoJEIofk9V1tejV7K4IAItYIX98DKN9x3FNs9Hd69Pw
mZtqmuJ12YAyiVZoR7IJ5GfyctHCYUUXcqmNR1O+2/IRvezFnU6ZTcPW3OfNfnuD
vlnMiK53F21T96ul3Wu47Z2wyO+WkoKeXdvlqt3Wa8HpnPbU6y5CSac2vK57ppTU
DcMZKXaDae6vA7bsjryYgTRRplH6eFWZEexjbuZudbDvqkySi2zGUTs6SUesMC5B
FRPgI6p6sCeQgGMJY+d1i+ZdzWkZhH5OLH2icf2MI1hnhSnRSJ/scSGm5OYDCwYy
03hOy0ZVMr8SB5/j0TjSaFXonKsmPKqxnU2g7crJmvFP4BfJrEbym0y9YhYXnVQ=
=8PDU
-----END PGP SIGNATURE-----
Merge tag 'v0.33.3.1'
Synapse 0.33.3.1 (2018-09-06)
=============================
SECURITY FIXES
--------------
- Fix an issue where event signatures were not always correctly validated ([\#3796](https://github.com/matrix-org/synapse/issues/3796))
- Fix an issue where server_acls could be circumvented for incoming events ([\#3796](https://github.com/matrix-org/synapse/issues/3796))
Internal Changes
----------------
- Unignore synctl in .dockerignore to fix docker builds ([\#3802](https://github.com/matrix-org/synapse/issues/3802))
We should check that both the sender's server, and the server which created the
event_id (which may be different from whatever the remote server has told us
the origin is), have signed the event.
Amber Brown