mirror of
https://mau.dev/maunium/synapse.git
synced 2024-06-13 16:18:56 +02:00
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)) -----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))
This commit is contained in:
Erik Johnston
commit
d64b24dfe6
17
CHANGES.md
17
CHANGES.md
|
|
@ -1,3 +1,19 @@
|
|||
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))
|
||||
|
||||
|
||||
Synapse 0.33.4rc1 (2018-09-04)
|
||||
==============================
|
||||
|
||||
|
|
@ -24,7 +40,6 @@ Bugfixes
|
|||
- Fix bug in sending presence over federation ([\#3768](https://github.com/matrix-org/synapse/issues/3768))
|
||||
- Fix bug where preserved threepid user comes to sign up and server is mau blocked ([\#3777](https://github.com/matrix-org/synapse/issues/3777))
|
||||
|
||||
|
||||
Internal Changes
|
||||
----------------
|
||||
|
||||
|
|
|
|||
|
|
@ -13,17 +13,20 @@
|
|||
# See the License for the specific language governing permissions and
|
||||
# limitations under the License.
|
||||
import logging
|
||||
from collections import namedtuple
|
||||
|
||||
import six
|
||||
|
||||
from twisted.internet import defer
|
||||
from twisted.internet.defer import DeferredList
|
||||
|
||||
from synapse.api.constants import MAX_DEPTH
|
||||
from synapse.api.constants import MAX_DEPTH, EventTypes, Membership
|
||||
from synapse.api.errors import Codes, SynapseError
|
||||
from synapse.crypto.event_signing import check_event_content_hash
|
||||
from synapse.events import FrozenEvent
|
||||
from synapse.events.utils import prune_event
|
||||
from synapse.http.servlet import assert_params_in_dict
|
||||
from synapse.types import get_domain_from_id
|
||||
from synapse.util import logcontext, unwrapFirstError
|
||||
|
||||
logger = logging.getLogger(__name__)
|
||||
|
|
@ -133,34 +136,25 @@ class FederationBase(object):
|
|||
* throws a SynapseError if the signature check failed.
|
||||
The deferreds run their callbacks in the sentinel logcontext.
|
||||
"""
|
||||
|
||||
redacted_pdus = [
|
||||
prune_event(pdu)
|
||||
for pdu in pdus
|
||||
]
|
||||
|
||||
deferreds = self.keyring.verify_json_objects_for_server([
|
||||
(p.origin, p.get_pdu_json())
|
||||
for p in redacted_pdus
|
||||
])
|
||||
deferreds = _check_sigs_on_pdus(self.keyring, pdus)
|
||||
|
||||
ctx = logcontext.LoggingContext.current_context()
|
||||
|
||||
def callback(_, pdu, redacted):
|
||||
def callback(_, pdu):
|
||||
with logcontext.PreserveLoggingContext(ctx):
|
||||
if not check_event_content_hash(pdu):
|
||||
logger.warn(
|
||||
"Event content has been tampered, redacting %s: %s",
|
||||
pdu.event_id, pdu.get_pdu_json()
|
||||
)
|
||||
return redacted
|
||||
return prune_event(pdu)
|
||||
|
||||
if self.spam_checker.check_event_for_spam(pdu):
|
||||
logger.warn(
|
||||
"Event contains spam, redacting %s: %s",
|
||||
pdu.event_id, pdu.get_pdu_json()
|
||||
)
|
||||
return redacted
|
||||
return prune_event(pdu)
|
||||
|
||||
return pdu
|
||||
|
||||
|
|
@ -173,16 +167,116 @@ class FederationBase(object):
|
|||
)
|
||||
return failure
|
||||
|
||||
for deferred, pdu, redacted in zip(deferreds, pdus, redacted_pdus):
|
||||
for deferred, pdu in zip(deferreds, pdus):
|
||||
deferred.addCallbacks(
|
||||
callback, errback,
|
||||
callbackArgs=[pdu, redacted],
|
||||
callbackArgs=[pdu],
|
||||
errbackArgs=[pdu],
|
||||
)
|
||||
|
||||
return deferreds
|
||||
|
||||
|
||||
class PduToCheckSig(namedtuple("PduToCheckSig", [
|
||||
"pdu", "redacted_pdu_json", "event_id_domain", "sender_domain", "deferreds",
|
||||
])):
|
||||
pass
|
||||
|
||||
|
||||
def _check_sigs_on_pdus(keyring, pdus):
|
||||
"""Check that the given events are correctly signed
|
||||
|
||||
Args:
|
||||
keyring (synapse.crypto.Keyring): keyring object to do the checks
|
||||
pdus (Collection[EventBase]): the events to be checked
|
||||
|
||||
Returns:
|
||||
List[Deferred]: a Deferred for each event in pdus, which will either succeed if
|
||||
the signatures are valid, or fail (with a SynapseError) if not.
|
||||
"""
|
||||
|
||||
# (currently this is written assuming the v1 room structure; we'll probably want a
|
||||
# separate function for checking v2 rooms)
|
||||
|
||||
# we want to check that the event is signed by:
|
||||
#
|
||||
# (a) the server which created the event_id
|
||||
#
|
||||
# (b) the sender's server.
|
||||
#
|
||||
# - except in the case of invites created from a 3pid invite, which are exempt
|
||||
# from this check, because the sender has to match that of the original 3pid
|
||||
# invite, but the event may come from a different HS, for reasons that I don't
|
||||
# entirely grok (why do the senders have to match? and if they do, why doesn't the
|
||||
# joining server ask the inviting server to do the switcheroo with
|
||||
# exchange_third_party_invite?).
|
||||
#
|
||||
# That's pretty awful, since redacting such an invite will render it invalid
|
||||
# (because it will then look like a regular invite without a valid signature),
|
||||
# and signatures are *supposed* to be valid whether or not an event has been
|
||||
# redacted. But this isn't the worst of the ways that 3pid invites are broken.
|
||||
#
|
||||
# let's start by getting the domain for each pdu, and flattening the event back
|
||||
# to JSON.
|
||||
pdus_to_check = [
|
||||
PduToCheckSig(
|
||||
pdu=p,
|
||||
redacted_pdu_json=prune_event(p).get_pdu_json(),
|
||||
event_id_domain=get_domain_from_id(p.event_id),
|
||||
sender_domain=get_domain_from_id(p.sender),
|
||||
deferreds=[],
|
||||
)
|
||||
for p in pdus
|
||||
]
|
||||
|
||||
# first make sure that the event is signed by the event_id's domain
|
||||
deferreds = keyring.verify_json_objects_for_server([
|
||||
(p.event_id_domain, p.redacted_pdu_json)
|
||||
for p in pdus_to_check
|
||||
])
|
||||
|
||||
for p, d in zip(pdus_to_check, deferreds):
|
||||
p.deferreds.append(d)
|
||||
|
||||
# now let's look for events where the sender's domain is different to the
|
||||
# event id's domain (normally only the case for joins/leaves), and add additional
|
||||
# checks.
|
||||
pdus_to_check_sender = [
|
||||
p for p in pdus_to_check
|
||||
if p.sender_domain != p.event_id_domain and not _is_invite_via_3pid(p.pdu)
|
||||
]
|
||||
|
||||
more_deferreds = keyring.verify_json_objects_for_server([
|
||||
(p.sender_domain, p.redacted_pdu_json)
|
||||
for p in pdus_to_check_sender
|
||||
])
|
||||
|
||||
for p, d in zip(pdus_to_check_sender, more_deferreds):
|
||||
p.deferreds.append(d)
|
||||
|
||||
# replace lists of deferreds with single Deferreds
|
||||
return [_flatten_deferred_list(p.deferreds) for p in pdus_to_check]
|
||||
|
||||
|
||||
def _flatten_deferred_list(deferreds):
|
||||
"""Given a list of one or more deferreds, either return the single deferred, or
|
||||
combine into a DeferredList.
|
||||
"""
|
||||
if len(deferreds) > 1:
|
||||
return DeferredList(deferreds, fireOnOneErrback=True, consumeErrors=True)
|
||||
else:
|
||||
assert len(deferreds) == 1
|
||||
return deferreds[0]
|
||||
|
||||
|
||||
def _is_invite_via_3pid(event):
|
||||
return (
|
||||
event.type == EventTypes.Member
|
||||
and event.membership == Membership.INVITE
|
||||
and "third_party_invite" in event.content
|
||||
)
|
||||
|
||||
|
||||
def event_from_pdu_json(pdu_json, outlier=False):
|
||||
"""Construct a FrozenEvent from an event json received over federation
|
||||
|
||||
|
|
|
|||
|
|
@ -99,7 +99,7 @@ class FederationServer(FederationBase):
|
|||
|
||||
@defer.inlineCallbacks
|
||||
@log_function
|
||||
def on_incoming_transaction(self, transaction_data):
|
||||
def on_incoming_transaction(self, origin, transaction_data):
|
||||
# keep this as early as possible to make the calculated origin ts as
|
||||
# accurate as possible.
|
||||
request_time = self._clock.time_msec()
|
||||
|
|
@ -108,34 +108,33 @@ class FederationServer(FederationBase):
|
|||
|
||||
if not transaction.transaction_id:
|
||||
raise Exception("Transaction missing transaction_id")
|
||||
if not transaction.origin:
|
||||
raise Exception("Transaction missing origin")
|
||||
|
||||
logger.debug("[%s] Got transaction", transaction.transaction_id)
|
||||
|
||||
# use a linearizer to ensure that we don't process the same transaction
|
||||
# multiple times in parallel.
|
||||
with (yield self._transaction_linearizer.queue(
|
||||
(transaction.origin, transaction.transaction_id),
|
||||
(origin, transaction.transaction_id),
|
||||
)):
|
||||
result = yield self._handle_incoming_transaction(
|
||||
transaction, request_time,
|
||||
origin, transaction, request_time,
|
||||
)
|
||||
|
||||
defer.returnValue(result)
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def _handle_incoming_transaction(self, transaction, request_time):
|
||||
def _handle_incoming_transaction(self, origin, transaction, request_time):
|
||||
""" Process an incoming transaction and return the HTTP response
|
||||
|
||||
Args:
|
||||
origin (unicode): the server making the request
|
||||
transaction (Transaction): incoming transaction
|
||||
request_time (int): timestamp that the HTTP request arrived at
|
||||
|
||||
Returns:
|
||||
Deferred[(int, object)]: http response code and body
|
||||
"""
|
||||
response = yield self.transaction_actions.have_responded(transaction)
|
||||
response = yield self.transaction_actions.have_responded(origin, transaction)
|
||||
|
||||
if response:
|
||||
logger.debug(
|
||||
|
|
@ -149,7 +148,7 @@ class FederationServer(FederationBase):
|
|||
|
||||
received_pdus_counter.inc(len(transaction.pdus))
|
||||
|
||||
origin_host, _ = parse_server_name(transaction.origin)
|
||||
origin_host, _ = parse_server_name(origin)
|
||||
|
||||
pdus_by_room = {}
|
||||
|
||||
|
|
@ -190,7 +189,7 @@ class FederationServer(FederationBase):
|
|||
event_id = pdu.event_id
|
||||
try:
|
||||
yield self._handle_received_pdu(
|
||||
transaction.origin, pdu
|
||||
origin, pdu
|
||||
)
|
||||
pdu_results[event_id] = {}
|
||||
except FederationError as e:
|
||||
|
|
@ -212,7 +211,7 @@ class FederationServer(FederationBase):
|
|||
if hasattr(transaction, "edus"):
|
||||
for edu in (Edu(**x) for x in transaction.edus):
|
||||
yield self.received_edu(
|
||||
transaction.origin,
|
||||
origin,
|
||||
edu.edu_type,
|
||||
edu.content
|
||||
)
|
||||
|
|
@ -224,6 +223,7 @@ class FederationServer(FederationBase):
|
|||
logger.debug("Returning: %s", str(response))
|
||||
|
||||
yield self.transaction_actions.set_response(
|
||||
origin,
|
||||
transaction,
|
||||
200, response
|
||||
)
|
||||
|
|
|
|||
|
|
@ -36,7 +36,7 @@ class TransactionActions(object):
|
|||
self.store = datastore
|
||||
|
||||
@log_function
|
||||
def have_responded(self, transaction):
|
||||
def have_responded(self, origin, transaction):
|
||||
""" Have we already responded to a transaction with the same id and
|
||||
origin?
|
||||
|
||||
|
|
@ -50,11 +50,11 @@ class TransactionActions(object):
|
|||
"transaction_id")
|
||||
|
||||
return self.store.get_received_txn_response(
|
||||
transaction.transaction_id, transaction.origin
|
||||
transaction.transaction_id, origin
|
||||
)
|
||||
|
||||
@log_function
|
||||
def set_response(self, transaction, code, response):
|
||||
def set_response(self, origin, transaction, code, response):
|
||||
""" Persist how we responded to a transaction.
|
||||
|
||||
Returns:
|
||||
|
|
@ -66,7 +66,7 @@ class TransactionActions(object):
|
|||
|
||||
return self.store.set_received_txn_response(
|
||||
transaction.transaction_id,
|
||||
transaction.origin,
|
||||
origin,
|
||||
code,
|
||||
response,
|
||||
)
|
||||
|
|
|
|||
|
|
@ -353,7 +353,7 @@ class FederationSendServlet(BaseFederationServlet):
|
|||
|
||||
try:
|
||||
code, response = yield self.handler.on_incoming_transaction(
|
||||
transaction_data
|
||||
origin, transaction_data,
|
||||
)
|
||||
except Exception:
|
||||
logger.exception("on_incoming_transaction failed")
|
||||
|
|
|
|||
|
|
@ -33,7 +33,7 @@ from ..utils import (
|
|||
)
|
||||
|
||||
|
||||
def _expect_edu(destination, edu_type, content, origin="test"):
|
||||
def _expect_edu_transaction(edu_type, content, origin="test"):
|
||||
return {
|
||||
"origin": origin,
|
||||
"origin_server_ts": 1000000,
|
||||
|
|
@ -42,8 +42,8 @@ def _expect_edu(destination, edu_type, content, origin="test"):
|
|||
}
|
||||
|
||||
|
||||
def _make_edu_json(origin, edu_type, content):
|
||||
return json.dumps(_expect_edu("test", edu_type, content, origin=origin)).encode(
|
||||
def _make_edu_transaction_json(edu_type, content):
|
||||
return json.dumps(_expect_edu_transaction(edu_type, content)).encode(
|
||||
'utf8'
|
||||
)
|
||||
|
||||
|
|
@ -190,8 +190,7 @@ class TypingNotificationsTestCase(unittest.TestCase):
|
|||
call(
|
||||
"farm",
|
||||
path="/_matrix/federation/v1/send/1000000/",
|
||||
data=_expect_edu(
|
||||
"farm",
|
||||
data=_expect_edu_transaction(
|
||||
"m.typing",
|
||||
content={
|
||||
"room_id": self.room_id,
|
||||
|
|
@ -221,11 +220,10 @@ class TypingNotificationsTestCase(unittest.TestCase):
|
|||
|
||||
self.assertEquals(self.event_source.get_current_key(), 0)
|
||||
|
||||
yield self.mock_federation_resource.trigger(
|
||||
(code, response) = yield self.mock_federation_resource.trigger(
|
||||
"PUT",
|
||||
"/_matrix/federation/v1/send/1000000/",
|
||||
_make_edu_json(
|
||||
"farm",
|
||||
_make_edu_transaction_json(
|
||||
"m.typing",
|
||||
content={
|
||||
"room_id": self.room_id,
|
||||
|
|
@ -233,7 +231,7 @@ class TypingNotificationsTestCase(unittest.TestCase):
|
|||
"typing": True,
|
||||
},
|
||||
),
|
||||
federation_auth=True,
|
||||
federation_auth_origin=b'farm',
|
||||
)
|
||||
|
||||
self.on_new_event.assert_has_calls(
|
||||
|
|
@ -264,8 +262,7 @@ class TypingNotificationsTestCase(unittest.TestCase):
|
|||
call(
|
||||
"farm",
|
||||
path="/_matrix/federation/v1/send/1000000/",
|
||||
data=_expect_edu(
|
||||
"farm",
|
||||
data=_expect_edu_transaction(
|
||||
"m.typing",
|
||||
content={
|
||||
"room_id": self.room_id,
|
||||
|
|
|
|||
|
|
@ -321,7 +321,10 @@ class MockHttpResource(HttpServer):
|
|||
|
||||
@patch('twisted.web.http.Request')
|
||||
@defer.inlineCallbacks
|
||||
def trigger(self, http_method, path, content, mock_request, federation_auth=False):
|
||||
def trigger(
|
||||
self, http_method, path, content, mock_request,
|
||||
federation_auth_origin=None,
|
||||
):
|
||||
""" Fire an HTTP event.
|
||||
|
||||
Args:
|
||||
|
|
@ -330,6 +333,7 @@ class MockHttpResource(HttpServer):
|
|||
content : The HTTP body
|
||||
mock_request : Mocked request to pass to the event so it can get
|
||||
content.
|
||||
federation_auth_origin (bytes|None): domain to authenticate as, for federation
|
||||
Returns:
|
||||
A tuple of (code, response)
|
||||
Raises:
|
||||
|
|
@ -350,8 +354,10 @@ class MockHttpResource(HttpServer):
|
|||
mock_request.getClientIP.return_value = "-"
|
||||
|
||||
headers = {}
|
||||
if federation_auth:
|
||||
headers[b"Authorization"] = [b"X-Matrix origin=test,key=,sig="]
|
||||
if federation_auth_origin is not None:
|
||||
headers[b"Authorization"] = [
|
||||
b"X-Matrix origin=%s,key=,sig=" % (federation_auth_origin, )
|
||||
]
|
||||
mock_request.requestHeaders.getRawHeaders = mock_getRawHeaders(headers)
|
||||
|
||||
# return the right path if the event requires it
|
||||
|
|
|
|||
Loading…
Reference in a new issue