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Fencer Intel
low 3.1

CVE-2019-11243 json

Kubernetes did not effectively clear service account credentials

published 7y ago modified 4mo ago also GHSA-gc2p-g4fg-29vh , GO-2025-3645 , EUVD-2019-2941

cvss
3.1
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.7%
EPSS 1.7% chance of exploitation in 30 days, percentile 77%
public exploits
0
none known

Summary

In Kubernetes v1.12.0-v1.12.4 and v1.13.0, the rest.AnonymousClientConfig() method returns a copy of the provided config, with credentials removed (bearer token, username/password, and client certificate/key data). In the affected versions, rest.AnonymousClientConfig() did not effectively clear service account credentials loaded using rest.InClusterConfig()

Patch / fix

  • go k8s.io/kubernetes 1.12.5, 1.13.1
  • govulncheck-vulndb openSUSE Tumbleweed 0.0.20250506T153719-1.1

opensuse advisories openSUSE-SU-2025:15059-1

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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-2019-11243 updated cvss 3.1

kubernetes: Authentication information exposure in rest.AnonymousClientConfig()

  • Red Hat OpenShift Container Platform 3.4 atomic-openshift, atomic-openshift-pod, atomic-openshift-node, atomic-openshift-tests, atomic-openshift-master, atomic-openshift-clients, +6 more Red Hat OpenShift Container Platform 3.5 atomic-openshift, atomic-openshift-pod, atomic-openshift-node, atomic-openshift-tests, atomic-openshift-master, atomic-openshift-clients, +6 more Red Hat OpenShift Container Platform 3.6 atomic-openshift, atomic-openshift-pod, atomic-openshift-node, atomic-openshift-tests, atomic-openshift-master, atomic-openshift-clients, +9 more Red Hat OpenShift Container Platform 3.7 atomic-openshift, atomic-openshift-pod, atomic-openshift-node, atomic-openshift-tests, atomic-openshift-master, atomic-openshift-clients, +10 more Red Hat OpenShift Container Platform 3.9 atomic-openshift, atomic-openshift-pod, atomic-openshift-node, atomic-openshift-tests, atomic-openshift-master, atomic-openshift-clients, +8 more Red Hat OpenShift Container Platform 3.10 atomic-openshift, atomic-openshift-pod, atomic-openshift-node, atomic-openshift-tests, atomic-openshift-master, atomic-openshift-clients, +7 more
    +3 more products
    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 Red Hat OpenShift Container Platform 4 openshift, openshift-clients, openshift-kubelet, openshift-hyperkube, openshift-kube-apiserver, openshift-kube-scheduler, +2 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

1.69% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.0 3.1 CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
NVD 3.1 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:P/I:N/A:N
GitHub 3.1 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
go k8s.io/kubernetes
>=1.12.0, <1.12.5
>=1.13.0, <1.13.1
1.12.5
1.13.1

Affected products

  • Kubernetes Kubernetes

Classification

Weakness
  • CWE-271 Privilege Dropping / Lowering Errors
  • CWE-212 Improper Removal of Sensitive Information Before Storage or Transfer
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.