CVE-2020-8561 Information

Description

A security issue was discovered in Kubernetes where actors that control the responses of MutatingWebhookConfiguration or ValidatingWebhookConfiguration requests are able to redirect kube-apiserver requests to private networks of the apiserver. If that user can view kube-apiserver logs when the log level is set to 10 they can view the redirected responses and headers in the logs.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N

Reference

https://groups.google.com/g/kubernetes-security-announce/c/RV2IhwcrQsY https://github.com/kubernetes/kubernetes/issues/104720 https://security.netapp.com/advisory/ntap-20211014-0002/

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction Required

HIGH

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

LOW

Availability Impact

NONE

Base Score

NONE

Base Severity

4.1