CVE-2020-8561
Published: 20 September 2021
Summary
CVE-2020-8561 is a medium-severity Confused Deputy (CWE-441) vulnerability in Kubernetes Kubernetes. Its CVSS base score is 4.1 (Medium).
Operationally, ranked at the 39.9th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-2002
Vulnerability details
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…
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level is set to 10, they can view the redirected responses and headers in the logs.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Mitigates confused deputy risks by ensuring distinct privilege domains so one partition cannot unintentionally act on behalf of another.
Limits impact of an externally controlled reference to a primary information resource by switching to an identified alternative.