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CVE-2019-11247

8.1 · HIGH

The Kubernetes kube-apiserver mistakenly allows access to a cluster-scoped custom resource if the request is made as if the resource were namespaced.

Published Aug 29, 2019CWE-20EPSS 2.15%

Overview

CVE-2019-11247 is a high-severity vulnerability. It was published on August 29, 2019 and has a CVSS 3.1 base score of 8.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

The Kubernetes kube-apiserver mistakenly allows access to a cluster-scoped custom resource if the request is made as if the resource were namespaced. Authorizations for the resource accessed in this manner are enforced using roles and role bindings within the namespace, meaning that a user with access only to a resource in one namespace could create, view update or delete the cluster-scoped resource (according to their namespace role privileges). Kubernetes affected versions include versions prior to 1.13.9, versions prior to 1.14.5, versions prior to 1.15.2, and versions 1.7, 1.8, 1.9, 1.10, 1.11, 1.12.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refaccess.redhat.com/errata/RHBA-2019:2816Refaccess.redhat.com/errata/RHBA-2019:2824Refaccess.redhat.com/errata/RHSA-2019:2690Refaccess.redhat.com/errata/RHSA-2019:2769GitHubgithub.com/kubernetes/kubernetes/issues/80983Refgroups.google.com/d/msg/kubernetes-security-announce/vUtEcSEY6SM/v2ZZxsmtFQAJRefsecurity.netapp.com/advisory/ntap-20190919-0003/Refaccess.redhat.com/errata/RHBA-2019:2816Refaccess.redhat.com/errata/RHBA-2019:2824Refaccess.redhat.com/errata/RHSA-2019:2690

How CyberStrike helps

Frequently asked questions

What is CVE-2019-11247?

CVE-2019-11247 is a high-severity vulnerability. It was published on August 29, 2019 and has a CVSS 3.1 base score of 8.1 (HIGH).

How severe is CVE-2019-11247?

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2019-11247?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2019-11247?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-11247 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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