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Improper Input Validation Affecting k8s.io/kubernetes/pkg/apis/core/validation package, versions >=1.21.0 <1.21.1 >=1.20.0 <1.20.7 >=1.19.0 <1.19.11 <1.18.19

0.0
low

Snyk CVSS

    Attack Complexity Low
    Privileges Required High

    Threat Intelligence

    EPSS 0.06% (24th percentile)
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NVD
4.8 medium
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Red Hat
2.7 low

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  • Snyk ID SNYK-GOLANG-K8SIOKUBERNETESPKGAPISCOREVALIDATION-1294543
  • published 19 May 2021
  • disclosed 12 May 2021
  • credit The Kubernetes Product Security Committee
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Introduced: 12 May 2021

CVE-2021-25737 Open this link in a new tab
CWE-20 Open this link in a new tab

How to fix?

Upgrade k8s.io/kubernetes/pkg/apis/core/validation to version 1.21.1, 1.20.7, 1.19.11, 1.18.19 or higher.

Overview

Affected versions of this package are vulnerable to Improper Input Validation. A security issue was discovered in Kubernetes where an authorized user may be able to redirect traffic to private networks on a Node. An untrusted user could exploit this by creating or modifying EndpointSlices to point to localhost or link-local addresses.