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.
{ "nvd_published_at": "2020-07-23T17:15:00Z", "cwe_ids": [ "CWE-400" ], "severity": "MODERATE", "github_reviewed": true, "github_reviewed_at": "2024-04-24T20:01:31Z" }