CVE-2020-14367
6.0
MEDIUM
CVSS 3.1
EPSS 0.48%
描述
A flaw was found in chrony versions before 3.5.1 when creating the PID file under the /var/run/chrony folder. The file is created during chronyd startup while still running as the root user, and when it's opened for writing, chronyd does not check for an existing symbolic link with the same file name. This flaw allows an attacker with privileged access to create a symlink with the default PID file name pointing to any destination file in the system, resulting in data loss and a denial of service due to the path traversal.
如何修補 CVE-2020-14367
要修補 CVE-2020-14367,請將受影響套件升級到下列已修補版本。
- —升級至 3.5.1-r0 或更新版本
- —升級至 3.5.1-1 或更新版本
CVE-2020-14367 正在被利用嗎?
低 — EPSS 為 0.5%,目前沒有觀察到大規模利用活動。
受影響套件(2)
- from 0, < 3.5.1-r0
- from 0, < 3.5.1-1
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.0 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H |