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Red Hat OpenShift: CVE-2021-25735: kubernetes: Validating Admission Webhook does not observe some previous fields

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Red Hat OpenShift: CVE-2021-25735: kubernetes: Validating Admission Webhook does not observe some previous fields

Severity
6
CVSS
(AV:N/AC:L/Au:S/C:N/I:P/A:P)
Published
07/29/2021
Created
07/30/2021
Added
07/29/2021
Modified
09/16/2021

Description

A security issue was discovered in kube-apiserver that could allow node updates to bypass a Validating Admission Webhook. Clusters are only affected by this vulnerability if they run a Validating Admission Webhook for Nodes that denies admission based at least partially on the old state of the Node object. Validating Admission Webhook does not observe some previous fields.

Solution(s)

  • linuxrpm-upgrade-openshift

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