CVSS 3.1 Score 5.3 of 10 (medium)


Published Nov 13, 2023
Updated: Nov 21, 2023
CWE ID 345


CVE-2023-42816 is a security vulnerability found in Kyverno, a policy engine designed for Kubernetes. The vulnerability exists in Kyverno's Notary verifier, allowing an attacker with control over the registry to send a malicious response to Kyverno when it requests signatures from the registry. This can lead to a denial of service, blocking other users' admission requests from being processed. The vulnerability only affects users who have built Kyverno from source at the main branch, while those using official Kyverno releases are not impacted. There have been no known cases of this vulnerability being exploited in the wild.

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