Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Matrix | Synapse | < 1.69.0 |
Related Weaknesses (CWE)
References
- https://github.com/matrix-org/synapse/issues/13288Issue Tracking
- https://github.com/matrix-org/synapse/pull/13823Patch
- https://github.com/matrix-org/synapse/security/advisories/GHSA-45cj-f97f-ggwvMitigationVendor Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]
- https://github.com/matrix-org/synapse/issues/13288Issue Tracking
- https://github.com/matrix-org/synapse/pull/13823Patch
- https://github.com/matrix-org/synapse/security/advisories/GHSA-45cj-f97f-ggwvMitigationVendor Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]
FAQ
What is CVE-2022-39335?
CVE-2022-39335 is a vulnerability with a CVSS score of 5.0 (MEDIUM). 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...
How severe is CVE-2022-39335?
CVE-2022-39335 has been rated MEDIUM with a CVSS base score of 5.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-39335?
Check the references section above for vendor advisories and patch information. Affected products include: Matrix Synapse.