CVE-2020-8559
MEDIUM severity · CVSS 6.4 · CWE-601
6.4CVSS MEDIUM
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityHigh
Privileges requiredHigh
User interactionRequired
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)51%
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: https://github.com/kubernetes/kubernetes/issues/92914 ↗
Additional information
- NVD record
- https://github.com/kubernetes/kubernetes/issues/92914Patch
- https://github.com/kubernetes/kubernetes/issues/92914Patch
- https://security.netapp.com/advisory/ntap-20200810-0004/Advisory
- https://security.netapp.com/advisory/ntap-20200810-0004/Advisory
- https://groups.google.com/d/msg/kubernetes-security-announce/JAIGG5yNROs/19nHQ5wkBwAJAdvisory
- https://groups.google.com/d/msg/kubernetes-security-announce/JAIGG5yNROs/19nHQ5wkBwAJAdvisory