CVE-2020-8558 Information

Description

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 Vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

https://github.com/kubernetes/kubernetes/issues/92315 https://groups.google.com/g/kubernetes-announce/c/sI4KmlH3S2I/m/TljjxOBvBQAJ https://security.netapp.com/advisory/ntap-20200821-0001/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8