Resource exhaustion in Kubernetes - CVE-2019-1002100

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Main Vulnerability Database Vulnerabilities #VU31127

Resource exhaustion in Kubernetes - CVE-2019-1002100

Published: April 1, 2019 / Updated: July 17, 2020


Vulnerability identifier: #VU31127
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-1002100
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote authenticated user to perform a denial of service (DoS) attack.

In all Kubernetes versions prior to v1.11.8, v1.12.6, and v1.13.4, users that are authorized to make patch requests to the Kubernetes API Server can send a specially crafted patch of type "json-patch" (e.g. `kubectl patch --type json` or `"Content-Type: application/json-patch+json"`) that consumes excessive resources while processing, causing a Denial of Service on the API Server.


Affected software

Kubernetes
Red Hat OpenShift Container Platform
atomic-openshift (Red Hat package)
IBM Cloud Pak for Watson AIOps
IBM Observability with Instana

How to mitigate CVE-2019-1002100

Install update from vendor's website.

Kubernetes - update to 1.13.4
atomic-openshift (Red Hat package) - update to 3.10.181-1.git.0.3ab4b3d.el7
IBM Cloud Pak for Watson AIOps - update to 4.8.1
IBM Observability with Instana - update to 279

External References

Related Security Bulletins