Vulnerability Description
Improper input validation in the Kubernetes API server in versions v1.0-1.12 and versions prior to v1.13.12, v1.14.8, v1.15.5, and v1.16.2 allows authorized users to send malicious YAML or JSON payloads, causing the API server to consume excessive CPU or memory, potentially crashing and becoming unavailable. Prior to v1.14.0, default RBAC policy authorized anonymous users to submit requests that could trigger this vulnerability. Clusters upgraded from a version prior to v1.14.0 keep the more permissive policy by default for backwards compatibility.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Kubernetes | Kubernetes | >= 1.1.0, <= 1.12.10 |
| Redhat | Openshift Container Platform | 3.9 |
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2019:3239Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3811Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3905Third Party Advisory
- https://github.com/kubernetes/kubernetes/issues/83253ExploitIssue TrackingMitigation
- https://groups.google.com/forum/#%21topic/kubernetes-security-announce/jk8polzSUPermissions Required
- https://security.netapp.com/advisory/ntap-20191031-0006/Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3239Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3811Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3905Third Party Advisory
- https://github.com/kubernetes/kubernetes/issues/83253ExploitIssue TrackingMitigation
- https://groups.google.com/forum/#%21topic/kubernetes-security-announce/jk8polzSUPermissions Required
- https://security.netapp.com/advisory/ntap-20191031-0006/Third Party Advisory
FAQ
What is CVE-2019-11253?
CVE-2019-11253 is a vulnerability with a CVSS score of 7.5 (HIGH). Improper input validation in the Kubernetes API server in versions v1.0-1.12 and versions prior to v1.13.12, v1.14.8, v1.15.5, and v1.16.2 allows authorized users to send malicious YAML or JSON payloa...
How severe is CVE-2019-11253?
CVE-2019-11253 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-11253?
Check the references section above for vendor advisories and patch information. Affected products include: Kubernetes Kubernetes, Redhat Openshift Container Platform.