CVE-2020-8561
Confused Deputy in Kubernetes
4.1
MEDIUM
CVSS 3.1
EPSS 0.18%
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.
How to fix CVE-2020-8561
To remediate CVE-2020-8561, upgrade the affected package to a fixed version below.
- —upgrade to 1.20.5+really1.20.2-1 or later
- —no fix listed
Is CVE-2020-8561 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 1.20.5+really1.20.2-1
- from 0, <= 1.22.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.1 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N |