CVE-2021-3667
6.5
MEDIUM
CVSS 3.1
EPSS 1.4%
描述
An improper locking issue was found in the virStoragePoolLookupByTargetPath API of libvirt. It occurs in the storagePoolLookupByTargetPath function where a locked virStoragePoolObj object is not properly released on ACL permission failure. Clients connecting to the read-write socket with limited ACL permissions could use this flaw to acquire the lock and prevent other users from accessing storage pool/volume APIs, resulting in a denial of service condition. The highest threat from this vulnerability is to system availability.
如何修補 CVE-2021-3667
要修補 CVE-2021-3667,請將受影響套件升級到下列已修補版本。
- —升級至 7.0.0-3+deb11u3 或更新版本
CVE-2021-3667 正在被利用嗎?
低 — EPSS 為 1.4%,目前沒有觀察到大規模利用活動。
受影響套件(1)
- from 0, < 7.0.0-3+deb11u3
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |