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.
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: kubernetes
Published: 2020-07-23T16:59:38.580465Z
Updated: 2024-09-17T03:14:05.177Z
Reserved: 2020-02-03T00:00:00
Link: CVE-2020-8557
Vulnrichment
No data.
NVD
Status : Modified
Published: 2020-07-23T17:15:12.513
Modified: 2024-11-21T05:39:01.667
Link: CVE-2020-8557
Redhat