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Privilege issues in Kubernetes kube-apiserver

Overview :
Privilege issues in Kubernetes kube-apiserver
Affected Product(s) :
  • kube-apiserver v1.18.0-1.18.5
  • kube-apiserver v1.17.0-1.17.8
  • kube-apiserver v1.16.0-1.16.12
  • all kube-apiserver versions prior to v1.16.0
Vulnerability Details :
CVE ID : CVE-2020-8559
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.

Solution :

To mitigate this vulnerability you must upgrade the kube-apiserver to a patched version.

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