CVE-2020-29486
6.0
MEDIUM
CVSS 3.1
EPSS 0.41%
描述
An issue was discovered in Xen through 4.14.x. Nodes in xenstore have an ownership. In oxenstored, a owner could give a node away. However, node ownership has quota implications. Any guest can run another guest out of quota, or create an unbounded number of nodes owned by dom0, thus running xenstored out of memory A malicious guest administrator can cause a denial of service against a specific guest or against the whole host. All systems using oxenstored are vulnerable. Building and using oxenstored is the default in the upstream Xen distribution, if the Ocaml compiler is available. Systems using C xenstored are not vulnerable.
如何修補 CVE-2020-29486
要修補 CVE-2020-29486,請將受影響套件升級到下列已修補版本。
- —升級至 4.13.2-r3 或更新版本
- —升級至 4.14.0+88-g1d1d1f5391-1 或更新版本
CVE-2020-29486 正在被利用嗎?
低 — EPSS 為 0.4%,目前沒有觀察到大規模利用活動。
受影響套件(2)
- from 0, < 4.13.2-r3
- from 0, < 4.14.0+88-g1d1d1f5391-1
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:C/C:N/I:N/A:H |