What’s Vulnerable › Vulnerabilities

CVE-2022-3294: Node address isn't always verified when proxying

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-03-01 · updated 2026-06-17
• Weakness: CWE-20

Description

Users may have access to secure endpoints in the control plane network. Kubernetes clusters are only affected if an untrusted user can modify Node objects and send proxy requests to them. Kubernetes supports node proxying, which allows clients of kube-apiserver to access endpoints of a Kubelet to establish connections to Pods, retrieve container logs, and more. While Kubernetes already validates the proxying address for Nodes, a bug in kube-apiserver made it possible to bypass this validation. Bypassing this validation could allow authenticated requests destined for Nodes to to the API server's private network.

Affected products

• Kubernetes: before 1.22.16; from 1.23.0 before 1.23.14; from 1.24.0 before 1.24.8; from 1.25.0 before 1.25.4 — fixed in 1.22.16, 1.23.14, 1.24.8, 1.25.4

How to fix

Upgrade to a fixed version: Kubernetes 1.22.16, 1.23.14, 1.24.8, 1.25.4. Check the vendor advisory for mitigations.

References

• https://github.com/kubernetes/kubernetes/issues/113757
• https://groups.google.com/g/kubernetes-security-announce/c/VyPOxF7CIbA
• https://security.netapp.com/advisory/ntap-20230505-0007/
• https://github.com/kubernetes/kubernetes/issues/113757
• https://groups.google.com/g/kubernetes-security-announce/c/VyPOxF7CIbA
• https://security.netapp.com/advisory/ntap-20230505-0007/

Get alerted when CVE-2022-3294 or the next vulnerability affects your stack