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Remove : from allowed client_secret chars (#8101)

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Closes: https://github.com/matrix-org/synapse/issues/6766

Equivalent Sydent PR: https://github.com/matrix-org/sydent/pull/309

I believe it's now time to remove the extra allowed `:` from `client_secret` parameters.
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Andrew Morgan 2020-08-18 14:14:27 +01:00 committed by GitHub
parent 408aef8276
commit 5cf7c12995
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4 changed files with 16 additions and 6 deletions
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14
CHANGES.md
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@ -1,3 +1,17 @@
For the next release
====================
Removal warning
---------------
Some older clients used a
[disallowed character](https://matrix.org/docs/spec/client_server/r0.6.1#post-matrix-client-r0-register-email-requesttoken)
(`:`) in the `client_secret` parameter of various endpoints. The incorrect
behaviour was allowed for backwards compatibility, but is now being removed
from Synapse as most users have updated their client. Further context can be
found at [\#6766](https://github.com/matrix-org/synapse/issues/6766).
Synapse 1.19.0 (2020-08-17)
===========================

1
changelog.d/8101.bugfix Normal file
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Synapse now correctly enforces the valid characters in the `client_secret` parameter used in various endpoints.

4
synapse/util/stringutils.py
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@ -24,9 +24,7 @@ from synapse.api.errors import Codes, SynapseError
_string_with_symbols = string.digits + string.ascii_letters + ".,;:^&*-_+=#~@"
# https://matrix.org/docs/spec/client_server/r0.6.0#post-matrix-client-r0-register-email-requesttoken
# Note: The : character is allowed here for older clients, but will be removed in a
# future release. Context: https://github.com/matrix-org/synapse/issues/6766
client_secret_regex = re.compile(r"^[0-9a-zA-Z\.\=\_\-\:]+$")
client_secret_regex = re.compile(r"^[0-9a-zA-Z\.\=\_\-]+$")
# random_string and random_string_with_symbols are used for a range of things,
# some cryptographically important, some less so. We use SystemRandom to make sure

3
tests/util/test_stringutils.py
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@ -28,9 +28,6 @@ class StringUtilsTestCase(unittest.TestCase):
"_--something==_",
"...--==-18913",
"8Dj2odd-e9asd.cd==_--ddas-secret-",
# We temporarily allow : characters: https://github.com/matrix-org/synapse/issues/6766
# To be removed in a future release
"SECRET:1234567890",
]
bad = [