CVE-2021-25219
bind9 - security update
5.3
MEDIUM
CVSS 3.1
EPSS 8.0%
描述
In BIND 9.3.0 -> 9.11.35, 9.12.0 -> 9.16.21, and versions 9.9.3-S1 -> 9.11.35-S1 and 9.16.8-S1 -> 9.16.21-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.18 of the BIND 9.17 development branch, exploitation of broken authoritative servers using a flaw in response processing can cause degradation in BIND resolver performance. The way the lame cache is currently designed makes it possible for its internal data structures to grow almost infinitely, which may cause significant delays in client query processing.
如何修補 CVE-2021-25219
要修補 CVE-2021-25219,請將受影響套件升級到下列已修補版本。
- —升級至 9.16.27-r0 或更新版本
CVE-2021-25219 正在被利用嗎?
中等 — EPSS 為 8.0%,可持續追蹤但非最高優先。
受影響套件(1)
- >= 9.3.0, < 9.16.27-r0
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| 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 |