CVE-2019-11247: Kubernetes API Server Vulnerability | Cloud Foundry

Severity

Medium

Vendor

Cloud Foundry Foundation

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.

Affected Cloud Foundry Products and Versions

• Cloud Foundry Container Runtime (CFCR)
  • All versions prior to 0.35.0

Mitigation

Users of affected versions should apply the following mitigations or upgrades:

• Releases that have fixed this issue include:
  • CFCR version 0.35.0

References

• <https://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2019-11247&gt;

History

2019-10-15: Initial vulnerability report published.