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CVE-2020-8561

CVE-2020-8561 · Webhook redirect in kube-apiserver

This page contains facts from public vulnerability sources. Check the original advisory before updating.

A security issue was discovered in Kubernetes where actors that control the responses of MutatingWebhookConfiguration or ValidatingWebhookConfiguration requests are able to redirect kube-apiserver requests to private networks of the apiserver. If that user can view kube-apiserver logs when the log level is set to 10, they can view the redirected responses and headers in the logs.

CVSS 4.1 · Medium · EPSS 2.1% · Fix available

Published
Updated

Stack: system · containers

Affected products and versions

  • kubernetes

    Versions
    • ≥ 0: Affected (semver)

    No fix published

  • kubernetes Debian:12

    Affected ranges
    • ECOSYSTEM: < 1.20.5+really1.20.2-1

    Update to 1.20.5+really1.20.2-1

  • kubernetes Debian:13

    Affected ranges
    • ECOSYSTEM: < 1.20.5+really1.20.2-1

    Update to 1.20.5+really1.20.2-1

  • kubernetes Debian:14

    Affected ranges
    • ECOSYSTEM: < 1.20.5+really1.20.2-1

    Update to 1.20.5+really1.20.2-1

Original sources

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