Resource Exhaustion Affecting kubernetes package, versions <1.18.5-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.5% (39th percentile)

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  • Snyk IDSNYK-DEBIAN11-KUBERNETES-584634
  • published15 Jul 2020
  • disclosed23 Jul 2020

Introduced: 15 Jul 2020

CVE-2020-8557  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade Debian:11 kubernetes to version 1.18.5-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kubernetes package and not the kubernetes package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

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 Base Scores

version 3.1