Permissions, Privileges, and Access Controls in Kubernetes - CVE-2019-11247

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Main Vulnerability Database Vulnerabilities #VU30804

Permissions, Privileges, and Access Controls in Kubernetes - CVE-2019-11247

Published: August 29, 2019 / Updated: July 17, 2020


Vulnerability identifier: #VU30804
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2019-11247
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Kubernetes
Affected software:
Kubernetes

Detailed vulnerability description

The vulnerability allows a remote authenticated user to read and manipulate data.

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 to mitigate CVE-2019-11247

Install update from vendor's website.

Sources