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Fencer Intel
medium 4.7

CVE-2020-8566 json

Ceph RBD adminSecrets exposed in logs when loglevel >= 4

published 5y ago modified 4mo ago also GHSA-5x96-j797-5qqw , GO-2024-2754 , EUVD-2024-1109

cvss
4.7
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 44%
public exploits
0
none known

Summary

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.

Patch / fix

  • go github.com/kubernetes/kubernetes 1.17.13, 1.18.10, 1.19.3
  • go k8s.io/kubernetes 1.17.13, 1.18.10, 1.19.3
  • kubernetes kubernetes 1.17.13, 1.18.10, 1.19.3
  • kubernetes Debian 14, Debian 13, Debian 12 1.19.3-1

debian advisories DEBIAN-CVE-2020-8566

  • cri-o openshift 4.7 1.20.0-0.rhaos4.7.git8921e00.el7.51
  • cri-o openshift 4.7 1.20.0-0.rhaos4.7.git8921e00.el8.51
  • ignition openshift 4.7 2.9.0-2.rhaos4.7.git1d56dc8.el8
  • cri-tools openshift 4.7 1.18.0-3.el7
  • cri-tools openshift 4.7 1.20.0-1.el8
  • openshift openshift 4.7 4.7.0-202102060108.p0.git.97095.7271b90.el7
  • openshift openshift 4.7 4.7.0-202102060108.p0.git.97095.7271b90.el8
  • python-rsa openshift 4.7 4.7-1.el8

red hat advisories RHSA-2020:5634

  • kubernetes SLE Module for Containers 15 SP1 1.17.13-4.21.2

suse advisories SUSE-SU-2020:3760-1

  • govulncheck-vulndb openSUSE Tumbleweed 0.0.20250807T150727-1.1

opensuse advisories openSUSE-SU-2025:15424-1

Is CVE-2020-8566 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-8566 updated cvss 5.3

kubernetes: Ceph RBD adminSecrets exposed in logs when loglevel >= 4

  • Red Hat OpenShift Container Platform 3.11 atomic-openshift, atomic-openshift-pod, atomic-openshift-node, atomic-openshift-tests, atomic-openshift-master, atomic-openshift-clients, +7 more
    affected: workaround, no fix planned “Will not fix”
  • Red Hat OpenShift Container Platform 4.6 openshift4/ose-hyperkube v4.6.0-202101090040.p0
    fixed: vendor fix RHSA-2021:0037
  • Red Hat OpenShift Container Platform 4.7 openshift 4.7.0-202102060108.p0.git.97095.7271b90.el7, openshift 4.7.0-202102060108.p0.git.97095.7271b90.el8, openshift-hyperkube 4.7.0-202102060108.p0.git.97095.7271b90.el7, openshift-hyperkube 4.7.0-202102060108.p0.git.97095.7271b90.el8
    fixed: vendor fix RHSA-2020:5634
  • Red Hat OpenShift Container Platform 4.6 openshift4/ose-cli v4.6.0-202101090040.p0, openshift4/ose-pod v4.6.0-202101120925.p0, openshift4/ose-etcd v4.6.0-202101090040.p0, openshift4/ose-tests v4.6.0-202101120925.p0, openshift4/ose-console v4.6.0-202101120925.p0, openshift4/ose-coredns v4.6.0-202101090040.p0, +119 more Red Hat OpenShift Container Platform 4.7 jq 1.6-2.el7, jq 1.6-2.el8, clevis 15-1.el8, faq 0.0.6-5.el8, bootupd 0.2.5-2.el8, ostree 2020.7-1.el8, +264 more Red Hat Storage 3 heketi, heketi-client, python-heketi
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.53% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:P/I:N/A:N
GitHub 3.1 5.3 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
go github.com/kubernetes/kubernetes
<1.17.13
>=1.18.0, <1.18.10
>=1.19.0, <1.19.3
1.17.13
1.18.10
1.19.3
go k8s.io/kubernetes
<1.17.13
>=1.18.0, <1.18.10
>=1.19.0, <1.19.3
1.17.13
1.18.10
1.19.3

Affected products

  • Kubernetes Kubernetes

Classification

Weakness
  • CWE-532 Insertion of Sensitive Information into Log File
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.