CVE-2022-39254
When matrix-nio receives forwarded room keys, the receiver doesn't check if it requested the key from the forwarder
8.6
HIGH
CVSS 3.1
EPSS 0.24%
描述
matrix-nio is a Python Matrix client library, designed according to sans I/O principles. Prior to version 0.20, when a users requests a room key from their devices, the software correctly remember the request. Once they receive a forwarded room key, they accept it without checking who the room key came from. This allows homeservers to try to insert room keys of questionable validity, potentially mounting an impersonation attack. Version 0.20 fixes the issue.
如何修補 CVE-2022-39254
要修補 CVE-2022-39254,請將受影響套件升級到下列已修補版本。
- —升級至 0.20.0-1 或更新版本
- —升級至 0.20 或更新版本
CVE-2022-39254 正在被利用嗎?
低 — EPSS 為 0.2%,目前沒有觀察到大規模利用活動。
受影響套件(2)
- from 0, < 0.20.0-1
- from 0, < 0.20
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N |