In short
- CVE-2020-8561 is a MEDIUM (CVSS 4.1) vulnerability affecting k8s.io/kubernetes, kubernetes (kubernetes).
- Chance of exploitation in the next 30 days (EPSS): 2.1%, higher than 81.7% of all vulnerabilities.
- No patched version is listed yet: follow the vendor's advisory in References.
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.
NVD 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.
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