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Fencer Vulns
medium 4.7

CVE-2020-8565 json

Incomplete fix for CVE-2019-11250 allows for token leak in logs when logLevel >= 9

published 2020-12-07 5 y ago modified 2026-09-10 1 mo ago also GHSA-8cfg-vx93-jvxw , GO-2021-0064 , EUVD-2023-0665

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, if the logging level is set to at least 9, authorization and bearer tokens will be written to log files. This can occur both in API server logs and client tool output like kubectl. This affects <= v1.19.3, <= v1.18.10, <= v1.17.13, < v1.20.0-alpha2.

Patch / fix

  • go k8s.io/client-go 0.17.16, 0.18.14, 0.19.6, 0.20.0-alpha.2
  • go k8s.io/kubernetes 1.20.0-alpha.2
  • kubernetes Debian 14, Debian 13, Debian 12 1.20.0-1

debian advisories DEBIAN-CVE-2020-8565

  • mcg openshift data foundation 4.9 5.9.0-28.61dcf87.5.9.el8

red hat advisories RHSA-2021:5085

  • kubernetes SLE Module for Containers 15 SP1 1.17.13-4.21.2

suse advisories SUSE-SU-2020:3760-1

  • local-path-provisioner Azure Linux 3.0 0.0.24-5

azure linux advisories AZL-41878

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

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-2020-8565 updated cvss 5.3

kubernetes: Incomplete fix for CVE-2019-11250 allows for token leak in logs when logLevel >= 9

  • 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: no fix planned “Will not fix”
  • Red Hat Openshift Container Storage 4 mcg, odf4/ocs-rhel9-operator
    affected: no fix available
  • Red Hat Storage 3 heketi, heketi-client, python-heketi, rhgs3/rhgs-gluster-block-prov-rhel7
    affected: no fix planned “Will not fix”
  • Red Hat OpenShift Container Storage 4.7 on RHEL-8 ocs4/rook-ceph-rhel8-operator 4.7-140.49a6fcf.release_4.7
    fixed: vendor fix RHSA-2021:2041
  • Red Hat OpenShift Container Storage 4.8 on RHEL-8 ocs4/ocs-operator-bundle 4.8.0-5, ocs4/mcg-core-rhel8 5.8.0-38.e060925.5.8, ocs4/mcg-rhel8-operator 5.8.0-27.4a6ca5f.5.8, ocs4/cephcsi-rhel8 4.8-125.01872cc.release_4.8, ocs4/ocs-rhel8-operator 4.8-196.a35d7d7.release_4.8, ocs4/ocs-must-gather-rhel8 4.8-196.a35d7d7.release_4.8, +2 more
    fixed: vendor fix RHBA-2021:3003
  • Red Hat OpenShift Data Foundation 4.9 on RHEL-8 mcg 5.9.0-28.61dcf87.5.9.el8, odf4/ocs-operator-bundle 4.9.0-5, odf4/odf-operator-bundle 4.9.0-5, odf4/odr-hub-operator-bundle 4.9.0-5, odf4/odr-cluster-operator-bundle 4.9.0-5, odf4/odf-multicluster-operator-bundle 4.9.0-5, +10 more
    fixed: vendor fix RHSA-2021:5085
  • Red Hat OpenShift Container Platform 4 openshift, openshift-clients, openshift-kubelet, openshift-hyperkube, openshift-kube-apiserver, openshift-kube-scheduler, +3 more Red Hat OpenShift Container Storage 4.7 on RHEL-8 ocs4/ocs-operator-bundle 4.7.0-11, ocs4/mcg-core-rhel8 5.7.0-60.2c1fdb0.5.7, ocs4/mcg-rhel8-operator 5.7.0-69.85e2026.5.7, ocs4/cephcsi-rhel8 4.7-102.5c44836.release_4.7, ocs4/ocs-rhel8-operator 4.7-174.7f14177.release_4.7, ocs4/ocs-must-gather-rhel8 4.7-174.7f14177.release_4.7
    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

0.52% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-08).

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 k8s.io/client-go
>=0.19.0, <0.19.6
>=0.20.0-alpha.0, <0.20.0-alpha.2
>=0.18.0, <0.18.14
<0.17.16
<0.20.0-alpha.2
0.19.6
0.20.0-alpha.2
0.18.14
0.17.16
go k8s.io/kubernetes
<1.20.0-alpha.2
1.20.0-alpha.2

Affected products

  • Kubernetes Kubernetes

Classification

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

References

Sources

Fencer Vulns 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.