VDB
CVE-2023-32323
CVE-2023-32323
PUBLISHED
CVSS 5 MEDIUM
Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. A malicious user on a Synapse homeserver X with permission to create certain state events can disable outbound federation from X to an arbitrary homeserver Y. Synapse instances with federation disabled are not affected. In versions of Synapse up to and including 1.73, Synapse did not limit the size of `invite_room_state`, meaning that it was possible to create an arbitrarily large invite event. Synapse 1.74 refuses to create oversized `invite_room_state` fields. Server operators should upgrade to Synapse 1.74 or newer urgently.
EPSS 0.98% · 62.0th percentile
Risk Scores
CVSS 3.1
5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L
EPSS Score
0.98%
62.0th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| PyPI | matrix-synapse | 0, 0 |
| matrix-org | synapse | *, < 1.74.0 |
| matrix | synapse | 0, 0 |
Timeline
- Dec 13, 2022 Fix PR Merged
- May 24, 2023 CVE Published
- May 27, 2023 EPSS Score
- Jul 3, 2023 EPSS Score
- Aug 9, 2023 EPSS Score
- Sep 15, 2023 EPSS Score
- Oct 22, 2023 EPSS Score
- Jan 4, 2024 EPSS Score
- Feb 10, 2024 EPSS Score
- Mar 18, 2024 EPSS Score
- Apr 24, 2024 EPSS Score
- May 31, 2024 EPSS Score
References
- https://github.com/matrix-org/synapse/pull/14642 fix
- https://github.com/matrix-org/synapse/issues/14492 discussion
- https://github.com/matrix-org/synapse/security/advisories/GHSA-f3wc-3vxv-xmvr advisory
- https://nvd.nist.gov/vuln/detail/CVE-2023-32323 advisory
- https://github.com/pypa/advisory-database/tree/main/vulns/matrix-synapse/PYSEC-2023-67.yaml url
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UJIJRP5ZH6B3KGFLHCAKR2IX2Y4Z25QD/ url
- https://github.com/matrix-org/synapse package
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UJIJRP5ZH6B3KGFLHCAKR2IX2Y4Z25QD url