CVE-2022-45933
Published: 27 November 2022
Summary
CVE-2022-45933 is a critical-severity Missing Authentication for Critical Function (CWE-306) vulnerability in Kubeview Project Kubeview. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 0.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
KubeView versions through 0.1.31 are affected by a missing authentication vulnerability in the api/scrape/kube-system endpoint. The component retrieves Kubernetes certificate files that can be used directly for authentication as kube-admin, allowing full cluster control. The issue is tracked as CWE-306 and carries a CVSS 3.1 score of 9.8.
Unauthenticated attackers with network access can exploit the endpoint to obtain the certificates and assume kube-admin privileges, resulting in complete takeover of the Kubernetes cluster. No user interaction or prior credentials are required.
The project maintainer has stated that KubeView was developed as a non-production side project and learning exercise rather than a hardened application, with the details discussed in the referenced GitHub issue. The EPSS score has remained at a high level near 0.92 with a recorded peak of 0.93.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-7188
Vulnerability details
KubeView through 0.1.31 allows attackers to obtain control of a Kubernetes cluster because api/scrape/kube-system does not require authentication, and retrieves certificate files that can be used for authentication as kube-admin. NOTE: the vendor's position is that KubeView was a "fun…
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side project and a learning exercise," and not "very secure."
- 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.
Requires established identification and authentication to unlock, mitigating missing authentication for continued system access.
Requiring identification and rationale for actions allowed without authentication ensures critical functions are not left unprotected by forcing review of authentication requirements.
Authorizing mobile device connections to organizational systems ensures authentication is performed for this critical access function.
Guarantees critical functions are protected by mandatory invocation of the access control mechanism.
Auditing sessions makes it possible to detect access to critical functions without required authentication.
The assessment process confirms authentication is present and effective for critical functions, preventing exploitation from missing authentication.
Certification assesses that critical functions have required authentication controls in place.
Disabling non-essential functions and services eliminates the need to secure them, reducing exposure from missing authentication on unnecessary components.