CVE-2021-40823
matrix-js-sdk can be tricked into disclosing E2EE room keys to a participating homeserver
5.9
MEDIUM
CVSS 3.1
EPSS 0.66%
描述
A logic error in the room key sharing functionality of matrix-js-sdk (aka Matrix Javascript SDK) before 12.4.1 allows a malicious Matrix homeserver present in an encrypted room to steal room encryption keys (via crafted Matrix protocol messages) that were originally sent by affected Matrix clients participating in that room. This allows the homeserver to decrypt end-to-end encrypted messages sent by affected clients.
如何修補 CVE-2021-40823
要修補 CVE-2021-40823,請將受影響套件升級到下列已修補版本。
- —未列出修補版本
- —升級至 12.4.1 或更新版本
CVE-2021-40823 正在被利用嗎?
低 — EPSS 為 0.7%,目前沒有觀察到大規模利用活動。
受影響套件(2)
- from 0
- from 0, < 12.4.1
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |