CVE-2021-21419
Improper Handling of Highly Compressed Data (Data Amplification) and Memory Allocation with Excessive Size Value in eventlet
5.3
MEDIUM
CVSS 3.1
EPSS 1.8%
描述
Eventlet is a concurrent networking library for Python. A websocket peer may exhaust memory on Eventlet side by sending very large websocket frames. Malicious peer may exhaust memory on Eventlet side by sending highly compressed data frame. A patch in version 0.31.0 restricts websocket frame to reasonable limits. As a workaround, restricting memory usage via OS limits would help against overall machine exhaustion, but there is no workaround to protect Eventlet process.
如何修補 CVE-2021-21419
要修補 CVE-2021-21419,請將受影響套件升級到下列已修補版本。
- —升級至 0.31.0 或更新版本
CVE-2021-21419 正在被利用嗎?
低 — EPSS 為 1.8%,目前沒有觀察到大規模利用活動。
受影響套件(1)
- >= 0.10, < 0.31.0
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:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |