CVE-2020-8566

Name: CVE-2020-8566
Creator: NVD / NIST
Published: 2020-12-07T22:15:21.48+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.52%

Last modified Jun 17, 2026

CVE-2020-8566 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. In Kubernetes clusters using Ceph RBD as a storage provisioner, with logging level of at least 4, Ceph RBD admin secrets can be written to logs. This occurs in kube-controller-manager's logs during provisioning of Ceph RBD persistent claims. EPSS estimates a 0.52% chance of exploitation in the next 30 days.

Description

In Kubernetes clusters using Ceph RBD as a storage provisioner, with logging level of at least 4, Ceph RBD admin secrets can be written to logs. This occurs in kube-controller-manager's logs during provisioning of Ceph RBD persistent claims. This affects < v1.19.3, < v1.18.10, < v1.17.13.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

0.52%

40.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Kubernetes	Kubernetes	>= 1.17.0, < 1.17.13
Kubernetes	Kubernetes	>= 1.18.0, < 1.18.10
Kubernetes	Kubernetes	>= 1.19.0, < 1.19.3

References

https://github.com/kubernetes/kubernetes/issues/95624Third Party Advisory
https://groups.google.com/g/kubernetes-security-discuss/c/vm-HcrFUOCs/m/36utxAM5CwAJMailing List, Patch, Third Party Advisory
https://security.netapp.com/advisory/ntap-20210122-0006/Third Party Advisory
https://github.com/kubernetes/kubernetes/issues/95624Third Party Advisory
https://groups.google.com/g/kubernetes-security-discuss/c/vm-HcrFUOCs/m/36utxAM5CwAJMailing List, Patch, Third Party Advisory
https://security.netapp.com/advisory/ntap-20210122-0006/Third Party Advisory

Timeline

Published: Dec 7, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-8566?

How severe is CVE-2020-8566?

CVE-2020-8566 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.52% probability of exploitation in the next 30 days.

How do I fix CVE-2020-8566?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-8566?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST