QID 377875

Date Published: 2023-01-12

QID 377875: Kubernetes API Server Allows Access Vulnerability

Kubernetes is an open-source container-orchestration system for automating deployment, scaling, and management of containerized applications.

Affected version:
Kubernetes 1.7.x-1.12.x
Kubernetes 1.13.0-1.13.8
Kubernetes 1.14.0-1.14.4
Kubernetes 1.15.0-1.15.1
QID Detection Logic:(Authenticated)
The QID uses 'kubectl --version' command to check for vulnerable versions of Kubernetes

Successful exploitation of the vulnerability may allow an attacker to access to custom resources in a single namespace can access custom resources with cluster scope.

CVSS V3 rated as Critical - 8.1 severity.

CVSS V2 rated as High - 6.5 severity.

Solution

For more information please visit 80983

Workaround:
To mitigate, remove authorization rules that grant access to cluster-scoped resources within namespaces. For example, RBAC roles and clusterroles intended to be referenced by namespaced rolebindings should not grant access to resources:[*], apiGroups:[*], or grant access to cluster-scoped custom resources.

Vendor References

80983 - github.com/kubernetes/kubernetes/issues/80983

CVEs related to QID 377875

CVE-2019-11247 |

Software Advisories

Advisory ID	Software	Component	Link
80983			github.com/kubernetes/kubernetes/issues/80983

By selecting these links, you may be leaving CVEreport webspace. We have provided these links to other websites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other websites that are more appropriate for your purpose. CVEreport does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, CVEreport does not endorse any commercial products that may be mentioned on these sites. Please address comments about any linked pages to [email protected].