CVE-2021-25735

Validating Admission Webhook does not observe some previous fields

Published Sep 6, 2021 CVSS 3.1 · 6.5 Medium EPSS 5.4% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-g42g-737j-qx6j Access Restriction Bypass in kube-apiserver
History

No history.

Sources

Status
PUBLISHED
Assigner
kubernetes
Published
Updated
Sep 16, 2024, 11:40 PM
Reserved
Jan 21, 2021, 12:00 AM
Status
Modified
Published
Sep 6, 2021, 12:15 PM
Modified
Jun 17, 2026, 3:42 AM
Severity
Moderate
Public date
Apr 14, 2021, 12:00 AM