Synapse does not apply enough checks to servers requesting auth events of events in a room
Summary
Synapse does not apply enough checks to servers requesting auth events of events in a room
Original description
The description as published by the source.
Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. The Matrix Federation API allows remote homeservers to request the authorization events in a room. This is necessary so that a homeserver receiving some events can validate that those events are legitimate and permitted in their room. However, in versions of Synapse up to and including 1.68.0, a Synapse homeserver answering a query for authorization events does not sufficiently check that the requesting server should be able to access them. The issue was patched in Synapse 1.69.0. Homeserver administrators are advised to upgrade.
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2022-39335 matrix-synapse Fixed in: 1.69.0-1
References
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov
- patch github.com
- report github.com
- web lists.fedoraproject.org