CVE-2021-3995
util-linux - security update
5.5
MEDIUM
CVSS 3.1
EPSS 0.63%
描述
A logic error was found in the libmount library of util-linux in the function that allows an unprivileged user to unmount a FUSE filesystem. This flaw allows an unprivileged local attacker to unmount FUSE filesystems that belong to certain other users who have a UID that is a prefix of the UID of the attacker in its string form. An attacker may use this flaw to cause a denial of service to applications that use the affected filesystems.
如何修補 CVE-2021-3995
要修補 CVE-2021-3995,請將受影響套件升級到下列已修補版本。
- —升級至 2.37.3-r0 或更新版本
CVE-2021-3995 正在被利用嗎?
低 — EPSS 為 0.6%,目前沒有觀察到大規模利用活動。
受影響套件(1)
- >= 2.34, < 2.37.3-r0
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |