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Fencer Intel
medium 4.7

CVE-2020-8564 json

Docker config secrets leaked when file is malformed and loglevel >= 4

published 2020-12-07 5 y ago modified 2026-09-10 1 mo ago also GHSA-8mjg-8c8g-6h85 , GO-2021-0066 , EUVD-2023-0668

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 40%
public exploits
0
none known

Summary

In Kubernetes clusters using a logging level of at least 4, processing a malformed docker config file will result in the contents of the docker config file being leaked, which can include pull secrets or other registry credentials. 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 1.20.0-alpha.1
  • 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-2020-8564

  • runc openshift 4.6 1.0.0-81.rhaos4.6.git5b757d4.el7
  • runc openshift 4.6 1.0.0-81.rhaos4.6.git5b757d4.el8
  • podman openshift 4.6 1.9.3-3.rhaos4.6.el8
  • skopeo openshift 4.6 1:1.1.1-2.rhaos4.6.el8
  • podman-tests openshift 4.6 1.9.3-3.rhaos4.6.el8
  • skopeo-tests openshift 4.6 1:1.1.1-2.rhaos4.6.el8
  • podman-docker openshift 4.6 1.9.3-3.rhaos4.6.el8
  • podman-remote openshift 4.6 1.9.3-3.rhaos4.6.el8

red hat advisories RHSA-2020:4297RHSA-2021:0172RHSA-2021:3193

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-2020-8564 updated cvss 5.3

kubernetes: Docker config secrets leaked when file is malformed and loglevel >= 4

  • Red Hat OpenShift Container Platform 3.11 atomic-openshift 3.11.501-1.git.0.f8c4746.el7, atomic-openshift-pod 3.11.501-1.git.0.f8c4746.el7, atomic-openshift-node 3.11.501-1.git.0.f8c4746.el7, atomic-openshift-tests 3.11.501-1.git.0.f8c4746.el7, atomic-openshift-master 3.11.501-1.git.0.f8c4746.el7, atomic-openshift-clients 3.11.501-1.git.0.f8c4746.el7, +7 more
    fixed: vendor fix RHSA-2021:3193
  • Red Hat OpenShift Container Platform 4.4 openshift4/ose-docker-builder v4.4.0-202101261542.p0
    fixed: vendor fix RHSA-2021:0281
  • Red Hat OpenShift Container Platform 4.5 openshift4/ose-docker-builder v4.5.0-202012050338.p0
    fixed: vendor fix RHSA-2020:5359
  • Red Hat OpenShift Container Platform 4.6 openshift4/ose-hyperkube v4.6.0-202101160934.p0, openshift4/ose-docker-builder v4.6.0-202012050130.p0, openshift 4.6.0-202101160934.p0.git.94242.fc5242e.el7, openshift 4.6.0-202101160934.p0.git.94242.fc5242e.el8, openshift-clients 4.6.0-202010081244.p0.git.3794.4743d24.el7, openshift-clients 4.6.0-202010081244.p0.git.3794.4743d24.el8, +4 more
    fixed: vendor fix RHSA-2021:0172
  • Red Hat OpenShift Container Platform 3.11 prometheus 3.11.501-1.git.99aae51.el7, openshift-kuryr 3.11.501-1.git.c33a657.el7, cri-o 1.11.16-0.16.rhaos3.11.git54f9e69.el7, openshift-ansible 3.11.501-1.git.0.5ea39b1.el7, openshift-kuryr-cni 3.11.501-1.git.c33a657.el7, openshift-kuryr-common 3.11.501-1.git.c33a657.el7, +22 more Red Hat OpenShift Container Platform 4.4 openshift4/ose-cli v4.4.0-202101261542.p0, openshift4/ose-pod v4.4.0-202101261542.p0, openshift4/ose-etcd v4.4.0-202101261542.p0, openshift4/ose-tests v4.4.0-202101261542.p0, openshift4/ose-console v4.4.0-202101261542.p0, openshift4/ose-coredns v4.4.0-202101261542.p0, +75 more Red Hat OpenShift Container Platform 4.5 openshift4/ose-cli v4.5.0-202012050338.p0, openshift4/ose-pod v4.5.0-202012050338.p0, openshift4/ose-etcd v4.5.0-202012050338.p0, openshift4/ose-tests v4.5.0-202012050338.p0, openshift4/ose-console v4.5.0-202012050338.p0, openshift4/ose-coredns v4.5.0-202012050338.p0, +75 more Red Hat OpenShift Container Platform 4.6 podman 1.9.3-3.rhaos4.6.el8, skopeo 1.1.1-2.rhaos4.6.el8, skopeo 1.1.1-3.rhaos4.6.el8, podman-tests 1.9.3-3.rhaos4.6.el8, skopeo-tests 1.1.1-2.rhaos4.6.el8, skopeo-tests 1.1.1-3.rhaos4.6.el8, +267 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

0.47% chance of exploitation in the next 30 days, higher than 40% 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 4.7 CVSS:3.1/AV:L/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
>=1.19.0, <1.19.3
>=1.18.0, <1.18.10
<1.17.13
1.19.3
1.18.10
1.17.13
go k8s.io/kubernetes
<1.20.0-alpha.1
1.20.0-alpha.1

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.