CVE-2019-11243 Kubernetes did not effectively clear service account credentials

What is CVE-2019-11243?

CVE-2019-11243 is a low-severity vulnerability in Kubernetes Kubernetes, published on 22 Apr 2019. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

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()

Weakness: CWE-212, CWE-271

Which versions are affected by CVE-2019-11243?

5 open source packages ship an affected version, including k8s.io/kubernetes. It affects 2 products.

Products include Kubernetes Kubernetes, Netapp Trident.

How do I fix CVE-2019-11243?

Upgrade k8s.io/kubernetes to a fixed version for your release line: 1.12.5 or 1.13.1.

Is CVE-2019-11243 being exploited?

There is no known exploitation of CVE-2019-11243 in the wild and no public exploit code.

Other vulnerabilities in Kubernetes Kubernetes

• CVE-2018-1002105 Privilege Escalation in Kubernetes Critical 9.8
• CVE-2017-1000056 Kubernetes Privilege Escalation Critical 9.8
• CVE-2016-1906 Authorization bypass in Openshift Critical 9.8
• CVE-2023-3676 Kubernetes - Windows nodes - Insufficient input sanitization leads to privilege escalation High 8.8
• CVE-2023-3955 Kubernetes - Windows nodes - Insufficient input sanitization leads to privilege escalation High 8.8

All Kubernetes Kubernetes vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-gc2p-g4fg-29vh, GO-2025-3645.