Описание
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.
Ссылки
- ExploitIssue Tracking
- Patch
- MitigationVendor Advisory
- ExploitIssue Tracking
- Patch
- MitigationVendor Advisory
Уязвимые конфигурации
EPSS
5 Medium
CVSS3
4.3 Medium
CVSS3
Дефекты
Связанные уязвимости
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.
Synapse is an open-source Matrix homeserver written and maintained by ...
Synapse Outgoing federation to specific hosts can be disabled by sending malicious invites
EPSS
5 Medium
CVSS3
4.3 Medium
CVSS3