Skip to content

Privilege Escalation in Kubernetes

Moderate severity GitHub Reviewed Published Apr 24, 2024 to the GitHub Advisory Database • Updated Apr 25, 2024

Package

gomod k8s.io/kubernetes (Go)

Affected versions

< 0.16.13
>= 0.17.0, < 0.17.9
>= 0.18.0, < 0.18.7

Patched versions

0.16.13
0.17.9
0.18.7

Description

The Kubernetes kube-apiserver in versions v1.6-v1.15, and versions prior to v1.16.13, v1.17.9 and v1.18.7 are vulnerable to an unvalidated redirect on proxied upgrade requests that could allow an attacker to escalate privileges from a node compromise to a full cluster compromise.

References

Published by the National Vulnerability Database Jul 22, 2020
Published to the GitHub Advisory Database Apr 24, 2024
Reviewed Apr 24, 2024
Last updated Apr 25, 2024

Severity

Moderate
6.8
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
High
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H

Weaknesses

CVE ID

CVE-2020-8559

GHSA ID

GHSA-33c5-9fx5-fvjm

Source code

Credits

Checking history
See something to contribute? Suggest improvements for this vulnerability.