Kyverno is a policy engine designed for Kubernetes. In versions of Kyverno prior to 1.10.0, resources which have the `deletionTimestamp` field defined can bypass validate, generate, or mutate-existing policies, even in cases where the `validationFailureAction` field is set to `Enforce`. This situation occurs as resources pending deletion were being consciously exempted by Kyverno, as a way to reduce processing load as policies are typically not applied to objects which are being deleted. However, this could potentially result in allowing a malicious user to leverage the Kubernetes finalizers feature by setting a finalizer which causes the Kubernetes API server to set the `deletionTimestamp` and then not completing the delete operation as a way to explicitly to bypass a Kyverno policy. Note that this is not applicable to Kubernetes Pods but, as an example, a Kubernetes Service resource can be manipulated using an indefinite finalizer to bypass policies. This is resolved in Kyverno 1.10.0. There is no known workaround.
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Wed, 08 Jan 2025 22:15:00 +0000
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2025-01-08T21:32:51.451Z
Reserved: 2023-05-25T21:56:51.244Z
Link: CVE-2023-34091

Updated: 2024-08-02T16:01:53.601Z

Status : Modified
Published: 2023-06-01T17:15:10.873
Modified: 2024-11-21T08:06:31.460
Link: CVE-2023-34091

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