Kyverno up to 1.10.4 data authenticity

Summaryinfo

A vulnerability was found in Kyverno up to 1.10.4. It has been declared as critical. This affects an unknown part. The manipulation results in data authenticity. This vulnerability is reported as CVE-2023-47630. The attack can be launched remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Kyverno up to 1.10.4. Affected is some unknown processing. The manipulation with an unknown input leads to a data authenticity vulnerability. CWE is classifying the issue as CWE-345. The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Kyverno is a policy engine designed for Kubernetes. An issue was found in Kyverno that allowed an attacker to control the digest of images used by Kyverno users. The issue would require the attacker to compromise the registry that the Kyverno users fetch their images from. The attacker could then return an vulnerable image to the the user and leverage that to further escalate their position. As such, the attacker would need to know which images the Kyverno user consumes and know of one of multiple exploitable vulnerabilities in previous digests of the images. Alternatively, if the attacker has compromised the registry, they could craft a malicious image with a different digest with intentionally placed vulnerabilities and deliver the image to the user. Users pulling their images by digests and from trusted registries are not impacted by this vulnerability. There is no evidence of this being exploited in the wild. The issue has been patched in 1.10.5. All users are advised to upgrade. There are no known workarounds for this vulnerability.

The weakness was disclosed 11/14/2023 as GHSA-3hfq-cx9j-923w. The advisory is shared for download at github.com. This vulnerability is traded as CVE-2023-47630 since 11/07/2023. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

Upgrading to version 1.10.5 eliminates this vulnerability.

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Productinfo

Name

• Kyverno

Version

• 1.10.0
• 1.10.1
• 1.10.2
• 1.10.3
• 1.10.4

Website

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

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Once again VulDB remains the best source for vulnerability data.

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