Ceph RBD adminSecrets exposed in logs when loglevel >= 4

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.

Scores

EPSS (exploitation in 30 days)

0.53% · top 55% of all CVEs (6 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.7.

Weakness

• CWE-532 Information Exposure Through Log Files (opens in a new tab)All about CWE-532 and its CVEs

Affected products

• Kubernetes · Kubernetes

  • affected < 1.19.3
  • affected < 1.18.10
  • affected < 1.17.13

Affected packages

From reviewed advisories of the GitHub Advisory Database.

• Gogithub.com/kubernetes/kubernetesGHSA-5x96-j797-5qqw (opens in a new tab)

What to do

Workaround: Do not enable verbose logging in production (log level >= 4), limit access to logs.

References (3)

• Multiple secret leaks when verbose logging is enabled (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• https://github.com/kubernetes/kubernetes/issues/95624 (opens in a new tab)x_refsource_CONFIRMx_transferred
• https://security.netapp.com/advisory/ntap-20210122-0006/ (opens in a new tab)x_refsource_CONFIRMx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisory GHSA-5x96-j797-5qqw (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2020-8566](https://trackcve.app/badge/CVE-2020-8566.svg)](https://trackcve.app/cve/CVE-2020-8566)

Record last updated 16 Sept 2024, 20:17 UTC.