Kyverno prior 1.11.0 infinite loop

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Kyverno. Impacted is an unknown function. Performing a manipulation results in infinite loop. This vulnerability is known as CVE-2023-42814. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Kyverno. It has been classified as problematic. This affects an unknown functionality. The manipulation with an unknown input leads to a infinite loop vulnerability. CWE is classifying the issue as CWE-835. The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. This is going to have an impact on availability. The summary by CVE is:

Kyverno is a policy engine designed for Kubernetes. A security vulnerability was found in Kyverno where an attacker could cause denial of service of Kyverno. The vulnerable component in Kyvernos Notary verifier. An attacker would need control over the registry from which Kyverno would fetch attestations. With such a position, the attacker could return a malicious response to Kyverno, when Kyverno would send a request to the registry. The malicious response would cause denial of service of Kyverno, such that other users' admission requests would be blocked from being processed. This is a vulnerability in a new component released in v1.11.0. The only users affected by this are those that have been building Kyverno from source at the main branch which is not encouraged. Users consuming official Kyverno releases are not affected. There are no known cases of this vulnerability being exploited in the wild.

The weakness was published 11/14/2023 as GHSA-9g37-h7p2-2c6r. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2023-42814 since 09/14/2023. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

Upgrading to version 1.11.0 eliminates this vulnerability.

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Productinfo

Name

• Kyverno

License

• open-source

Website

• Product: https://github.com/kyverno/kyverno/

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