CVE-2022-39374
Synapse Denial of service due to incorrect application of event authorization rules during state resolution
6.5
MEDIUM
CVSS 3.1
EPSS 0.94%
描述
Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. If Synapse and a malicious homeserver are both joined to the same room, the malicious homeserver can trick Synapse into accepting previously rejected events into its view of the current state of that room. This can be exploited in a way that causes all further messages and state changes sent in that room from the vulnerable homeserver to be rejected. This issue has been patched in version 1.68.0
如何修補 CVE-2022-39374
要修補 CVE-2022-39374,請將受影響套件升級到下列已修補版本。
- —升級至 1.68.0-1 或更新版本
- —升級至 1.68.0rc1 或更新版本
- —升級至 1.68.0 或更新版本
CVE-2022-39374 正在被利用嗎?
低 — EPSS 為 0.9%,目前沒有觀察到大規模利用活動。
受影響套件(3)
- from 0, < 1.68.0-1
- >= 1.62.0, < 1.68.0rc1
- >= 1.62.0, < 1.68.0
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:H/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |