CVE-2020-25637
libvirt - security update
6.7
MEDIUM
CVSS 3.1
EPSS 0.53%
描述
A double free memory issue was found to occur in the libvirt API, in versions before 6.8.0, responsible for requesting information about network interfaces of a running QEMU domain. This flaw affects the polkit access control driver. Specifically, clients connecting to the read-write socket with limited ACL permissions could use this flaw to crash the libvirt daemon, resulting in a denial of service, or potentially escalate their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
如何修補 CVE-2020-25637
要修補 CVE-2020-25637,請將受影響套件升級到下列已修補版本。
- —升級至 6.6.0-r3 或更新版本
- —升級至 6.8.0-1 或更新版本
- —升級至 3.0.0-4+deb9u5 或更新版本
CVE-2020-25637 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(3)
- from 0, < 6.6.0-r3
- from 0, < 6.8.0-1
- from 0, < 3.0.0-4+deb9u5
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.7 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |