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CVE-2021-25735

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CVE-2021-25735

Published: Sep 6, 2021

Modified: Sep 16, 2024

PUBLISHED

CVSS v3.1

6.5

MEDIUM

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.

VendorProductVersions

Kubernetes

Kubernetes

affected
unspecified - <= 1.18.17
affected
unspecified - <= 1.19.9
affected
unspecified - <= 1.20.5

Weaknesses (CWE)

CWE-372

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

High

References

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