CVE-2019-11253

Kubernetes API Server JSON/YAML parsing vulnerable to resource exhaustion attack

State: Published
Severity: 7.5 High
Published: Oct 17, 2019
Updated: Sep 16, 2024
Reserved: Apr 17, 2019

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.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	kubernetes

Weaknesses

CWE-20 Improper Input Validation

Affected Products

Product	Versions
KubernetesKubernetes	prior to 1.13.12Affected prior to 1.14.8Affected prior to 1.15.5Affected prior to 1.16.2Affected 1.1Affected 1.2Affected 1.3Affected 1.4Affected 1.5Affected 1.6Affected 1.7Affected 1.8Affected 1.9Affected 1.10Affected 1.11Affected 1.12Affected

References

https://github.com/kubernetes/kubernetes/issues/83253
CVE-2019-11253: denial of service vulnerability from malicious YAML or JSON payloadsmailing-list
RHSA-2019:3239vendor-advisory
https://security.netapp.com/advisory/ntap-20191031-0006/
RHSA-2019:3811vendor-advisory
RHSA-2019:3905vendor-advisory

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