Ensure kube-controller-manager (affected versions of kube-controller-manager: v1.18.0, v1.17.0 - v1.17.4, v1.16.0 - v1.16.8, and v1.15.11) are not vulnerable to CVE-2020-8555

Enabling certain volume types may leave them open to CVE-2020-8555.

The best method of remediation is to upgrade to a patched version. This is fixed in versions 1.15.12+, 1.16.9+, 1.17.5+, and 1.18.1+. All minor release versions newer are also unaffected. Other potential mitigations would be to use a third party security product such as Gatekeeper, or discontinue the use of affected filesystems: glusterfs, quobyte, storageos, scaleIO.

References:
https://github.com/kubernetes/kubernetes/issues/91542
https://discuss.kubernetes.io/t/security-advisory-cve-2020-8555-half-blind-ssrf-in-kube-controller-manager/11198