CVEvulnerability

CVE-2020-8557

5.5 MEDIUM Published 2020-07-23 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2020-07-23
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
2.1 LOW — AV:L/AC:L/Au:N/C:N/I:N/A:P
Weaknesses
CWE-400

Description

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.

Affected configurations

• kubernetes kubernetes (< 1.16.13) • kubernetes kubernetes (>= 1.17.0 < 1.17.9) • kubernetes kubernetes (>= 1.18.0 < 1.18.6)

Related

Weakness · CWE (1)

  • CWE-400 Uncontrolled Resource Consumption weakness

References