#VU34130 Permissions, Privileges, and Access Controls in Kubernetes - CVE-2020-8559

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Main Vulnerability Database Vulnerabilities #VU34130

#VU34130 Permissions, Privileges, and Access Controls in Kubernetes - CVE-2020-8559

Published: July 22, 2020 / Updated: September 4, 2020


Vulnerability identifier: #VU34130
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:P/U:Green
CVE-ID: CVE-2020-8559
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability: Public exploit is available
Vulnerable software:
Kubernetes
Software vendor:
Kubernetes

Description

The vulnerability allows a remote privileged user to execute arbitrary code.

The Kubernetes kube-apiserver in versions v1.6-v1.15, and versions prior to v1.16.13, v1.17.9 and v1.18.6 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.


Remediation

Install update from vendor's website.

External links