p PatchFirst

CVE-2020-8558

CVE-2020-8558 · Kubernetes node setting allows for neighboring hosts to bypass localhost boundary

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

The Kubelet and kube-proxy components in versions 1.1.0-1.16.10, 1.17.0-1.17.6, and 1.18.0-1.18.3 were found to contain a security issue which allows adjacent hosts to reach TCP and UDP services bound to 127.0.0.1 running on the node or in the node's network namespace. Such a service is generally thought to be reachable only by other processes on the same host, but due to this defeect, could be reachable by other hosts on the same LAN as the node, or by containers running on the same node as the service.

CVSS 5.4 · Medium · EPSS 3.6% · Fix available

Published
Updated

Stack: system · containers

Affected products and versions

  • kubernetes

    Versions
    • prior to 1.18.4: Affected
    • prior to 1.17.7: Affected
    • prior to 1.16.11: Affected
    • 1.15: Affected
    • 1.14: Affected
    • 1.13: Affected
    • 1.12: Affected
    • 1.11: Affected
    • 1.10: Affected
    • 1.9: Affected
    • 1.8: Affected
    • 1.7: Affected
    • 1.6: Affected
    • 1.5: Affected
    • 1.4: Affected
    • 1.3: Affected
    • 1.2: Affected
    • 1.1: Affected

    No fix published

  • kubernetes Debian:12

    Affected ranges
    • ECOSYSTEM: < 1.18.5-1

    Update to 1.18.5-1

  • kubernetes Debian:13

    Affected ranges
    • ECOSYSTEM: < 1.18.5-1

    Update to 1.18.5-1

  • kubernetes Debian:14

    Affected ranges
    • ECOSYSTEM: < 1.18.5-1

    Update to 1.18.5-1

Original sources

Check your server →