CVE-2023-32323
Synapse Outgoing federation to specific hosts can be disabled by sending malicious invites
描述
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.
如何修補 CVE-2023-32323
要修補 CVE-2023-32323,請將受影響套件升級到下列已修補版本。
- —升級至 1.74.0-1 或更新版本
- —升級至 1.74.0 或更新版本
- —升級至 1.74.0 或更新版本
CVE-2023-32323 正在被利用嗎?
低 — EPSS 為 1.0%,目前沒有觀察到大規模利用活動。
受影響套件(3)
- from 0, < 1.74.0-1
- from 0, < 1.74.0
- from 0, < 1.74.0
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:L |
| osv | CVSS 3.1 | MEDIUM5.0 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L |