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.
References
History
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MITRE Information
Status: PUBLISHED
Assigner: GitHub_M
Published: 2023-05-26T13:32:01.632Z
Updated: 2023-05-26T13:32:01.632Z
Reserved: 2023-05-08T13:26:03.880Z
Link: CVE-2023-32323
JSON object: View
NVD Information
Status : Modified
Published: 2023-05-26T14:15:10.827
Modified: 2023-09-18T04:15:09.300
Link: CVE-2023-32323
JSON object: View
Redhat Information
No data.
CWE