What is CVE-2020-8566?

CVE-2020-8566 is a medium-severity vulnerability in Kubernetes, classified under Insertion of Sensitive Information into Log File. CVSS score: 4.7/10. Published 2020-12-07.

How severe is CVE-2020-8566?

Medium severity. CVSS v3 base score is 4.7 out of 10.

Is CVE-2020-8566 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Information disclosure in Kubernetes

CVE-2020-8566

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.

EPSS: 0.005 (41.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Kubernetes — versions < 1.19.3, < 1.18.10, < 1.17.13

Weakness classification (CWE)

CWE-532 — Insertion of Sensitive Information into Log File

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

jordan@liggitt.net (mailing-list, x_refsource_MLIST, Patch, Mailing List, Third Party Advisory)
jordan@liggitt.net (x_refsource_CONFIRM, Third Party Advisory)
jordan@liggitt.net (x_refsource_CONFIRM, Third Party Advisory)

Frequently asked questions

What is CVE-2020-8566?: CVE-2020-8566 is a medium-severity vulnerability in Kubernetes, classified under Insertion of Sensitive Information into Log File. CVSS score: 4.7/10. Published 2020-12-07.
How severe is CVE-2020-8566?: Medium severity. CVSS v3 base score is 4.7 out of 10.
Is CVE-2020-8566 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.