CVE-2020-8557— Kubernetes 资源管理错误漏洞

Kubernetes node disk Denial of Service by writing to container /etc/hosts

The Kubernetes kubelet component in versions 1.1-1.16.12, 1.17.0-1.17.8 and 1.18.0-1.18.5 do not account for disk usage by a pod which writes to its own /etc/hosts file. The /etc/hosts file mounted in a pod by kubelet is not included by the kubelet eviction manager when calculating ephemeral storage usage by a pod. If a pod writes a large amount of data to the /etc/hosts file, it could fill the storage space of the node and cause the node to fail.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

未加控制的资源消耗(资源穷尽)

Kubernetes 资源管理错误漏洞

Kubernetes（K8s）是云原生计算基金会（Cloud Native Computing Foundation）的一个开源系统，用于自动部署、扩展和管理容器化应用程序。 Kubernetes kubelet中存在资源管理错误漏洞。该漏洞源于网络系统或产品对系统资源（如内存、磁盘空间、文件等）的管理不当。以下产品及版本受到影响：Kubernetes kubelet 1.1版本至1.16.12版本，1.17.0版本至1.17.8版本，1.18.0版本至1.18.5版本。

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