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CVE-2019-11247

HIGHCVSS 8.1/10EPSS 2.09%

Last modified

CVE-2019-11247 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. 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). EPSS estimates a 2.09% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
8.1/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

EPSS Probability
2.09%

79.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
KubernetesKubernetes>= 1.7.0, <= 1.12.10—
KubernetesKubernetes>= 1.13.0, < 1.13.9—
KubernetesKubernetes>= 1.14.0, < 1.14.5—
KubernetesKubernetes>= 1.15.0, < 1.15.2—
KubernetesKubernetes1.12.11Beta0
RedhatOpenshift Container Platform3.9—
RedhatOpenshift Container Platform3.10—
RedhatOpenshift Container Platform3.11—

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-11247?
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.
How severe is CVE-2019-11247?
CVE-2019-11247 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 2.09% probability of exploitation in the next 30 days.
How do I fix CVE-2019-11247?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST