CVE-2020-8551: Kubernetes kubelet denial of service

Published Mar 27, 2020
·
Updated

The Kubelet component in versions 1.15.0-1.15.9, 1.16.0-1.16.6, and 1.17.0-1.17.2 has been found to be vulnerable to a denial of service attack via the kubelet API, including the unauthenticated HTTP read-only API typically served on port 10255, and the authenticated HTTPS API typically served on port 10250.

Affected Software

9 affected componentsFixes available
go/k8s.io/kubernetes>=1.17.0<1.17.2
1.17.2
go/k8s.io/kubernetes>=1.16.0<1.16.6
1.16.6
go/k8s.io/kubernetes>=1.15.0<1.15.10
1.15.10
Kubernetes kubernetes>=1.15.0<=1.15.9
Kubernetes kubernetes>=1.16.0<=1.16.6
Kubernetes kubernetes>=1.17.0<=1.17.2
Fedoraproject Fedora=32
IBM Watson Studio on Cloud Pak for Data<=4.0
IBM Watson Studio on Cloud Pak for Data<=5.0

Event History

Mar 27, 2020
CVE Published
via MITRE·02:25 PM
Data Sourced
via MITRE·02:25 PM
DescriptionSeverityWeakness
Feb 15, 2022
Advisory Published
01:57 AM
Aug 28, 2025
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is CVE-2020-8551?

CVE-2020-8551 is a vulnerability in the Kubelet component of Kubernetes.

2

What is the severity of CVE-2020-8551?

CVE-2020-8551 has a severity level of 6.5 (medium).

3

Which versions of Kubernetes are affected by CVE-2020-8551?

Versions 1.15.0-1.15.9, 1.16.0-1.16.6, and 1.17.0-1.17.2 of Kubernetes are affected by CVE-2020-8551.

4

How can I fix CVE-2020-8551?

To fix CVE-2020-8551, update your Kubernetes version to 1.17.2, 1.16.6, or 1.15.10, depending on the version you are currently using.

5

Where can I find more information about CVE-2020-8551?

You can find more information about CVE-2020-8551 at the following references: [link1](https://nvd.nist.gov/vuln/detail/CVE-2020-8551), [link2](https://github.com/kubernetes/kubernetes/issues/89377), [link3](https://github.com/kubernetes/kubernetes/pull/87913).

Contact

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