CVE-2022-39335
Synapse does not apply enough checks to servers requesting auth events of events in a room
描述
Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. The Matrix Federation API allows remote homeservers to request the authorization events in a room. This is necessary so that a homeserver receiving some events can validate that those events are legitimate and permitted in their room. However, in versions of Synapse up to and including 1.68.0, a Synapse homeserver answering a query for authorization events does not sufficiently check that the requesting server should be able to access them. The issue was patched in Synapse 1.69.0. Homeserver administrators are advised to upgrade.
如何修補 CVE-2022-39335
要修補 CVE-2022-39335,請將受影響套件升級到下列已修補版本。
- —升級至 1.69.0-1 或更新版本
- —升級至 1.69.0 或更新版本
- —升級至 1.69.0 或更新版本
CVE-2022-39335 正在被利用嗎?
低 — EPSS 為 0.6%,目前沒有觀察到大規模利用活動。
受影響套件(3)
- from 0, < 1.69.0-1
- from 0, < 1.69.0
- from 0, < 1.69.0
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | MEDIUM5.0 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L |