MEDIUM5.3

PYSEC-2023-230

Quick fix

PYSEC-2023-230 — matrix-synapse: upgrade to the fixed version with the command below.

pip install --upgrade 'matrix-synapse>=daec55e1fe120c564240c5386e77941372bf458f'

Details

Synapse is an open-source Matrix homeserver Prior to versions 1.95.1 and 1.96.0rc1, cached device information of remote users can be queried from Synapse. This can be used to enumerate the remote users known to a homeserver. System administrators are encouraged to upgrade to Synapse 1.95.1 or 1.96.0rc1 to receive a patch. As a workaround, the `federation_domain_whitelist` can be used to limit federation traffic with a homeserver.

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI/matrix-synapse

Introduced in: 0Fixed in: daec55e1fe120c564240c5386e77941372bf458f

Fixpip install --upgrade 'matrix-synapse>=daec55e1fe120c564240c5386e77941372bf458f'

References

https://github.com/matrix-org/synapse/security/advisories/GHSA-mp92-3jfm-3575[ADVISORY]
https://github.com/matrix-org/synapse/commit/daec55e1fe120c564240c5386e77941372bf458f[FIX]