DescriptionSynapse 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.
Overall state of this security issue: Does not affect SUSE products
This issue is currently rated as having moderate severity.
|National Vulnerability Database
SUSE Timeline for this CVECVE page created: Thu May 25 14:00:10 2023
CVE page last modified: Fri Jun 23 13:05:39 2023