CVE-2020-8557: Uncontrolled Resource Consumption
(updated )
The Kubernetes kubelet component 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.
References
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