CVE-2019-19331
7.5
HIGH
CVSS 3.1
EPSS 2.2%
描述
knot-resolver before version 4.3.0 is vulnerable to denial of service through high CPU utilization. DNS replies with very many resource records might be processed very inefficiently, in extreme cases taking even several CPU seconds for each such uncached message. For example, a few thousand A records can be squashed into one DNS message (limit is 64kB).
如何修補 CVE-2019-19331
要修補 CVE-2019-19331,請將受影響套件升級到下列已修補版本。
- Debian/knot-resolver—升級至 5.0.1-1 或更新版本
CVE-2019-19331 正在被利用嗎?
低 — EPSS 為 2.2%,目前沒有觀察到大規模利用活動。
受影響套件(1)
- from 0, < 5.0.1-1
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |