CVE-2020-8566 Ceph RBD adminSecrets exposed in logs when loglevel >= 4

What is CVE-2020-8566?

CVE-2020-8566 is a medium-severity vulnerability in Kubernetes Kubernetes, published on 7 Dec 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-532

Which versions are affected by CVE-2020-8566?

7 open source packages ship an affected version, including github.com/kubernetes/kubernetes and k8s.io/kubernetes. It affects 1 product.

Products include Kubernetes Kubernetes.

How do I fix CVE-2020-8566?

Upgrade github.com/kubernetes/kubernetes to a fixed version for your release line: 1.17.13, 1.18.10 or 1.19.3.

Is CVE-2020-8566 being exploited?

There is no known exploitation of CVE-2020-8566 in the wild and no public exploit code.

Other vulnerabilities in Kubernetes Kubernetes

• CVE-2018-1002105 Privilege Escalation in Kubernetes Critical 9.8
• CVE-2017-1000056 Kubernetes Privilege Escalation Critical 9.8
• CVE-2016-1906 Authorization bypass in Openshift Critical 9.8
• CVE-2023-3676 Kubernetes - Windows nodes - Insufficient input sanitization leads to privilege escalation High 8.8
• CVE-2023-3955 Kubernetes - Windows nodes - Insufficient input sanitization leads to privilege escalation High 8.8

All Kubernetes Kubernetes vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2020-8566, GHSA-5x96-j797-5qqw, GO-2024-2754.