CVE-2021-3999
7.8
HIGH
CVSS 3.1
EPSS 0.72%
描述
A flaw was found in glibc. An off-by-one buffer overflow and underflow in getcwd() may lead to memory corruption when the size of the buffer is exactly 1. A local attacker who can control the input buffer and size passed to getcwd() in a setuid program could use this flaw to potentially execute arbitrary code and escalate their privileges on the system.
如何修補 CVE-2021-3999
要修補 CVE-2021-3999,請將受影響套件升級到下列已修補版本。
- —升級至 2.31-13+deb11u4 或更新版本
CVE-2021-3999 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(1)
- from 0, < 2.31-13+deb11u4
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |