An image signature validation bypass vulnerability in Kyverno 1.8.3 and 1.8.4 allows a malicious image registry (or a man-in-the-middle attacker) to inject unsigned arbitrary container images into a protected Kubernetes cluster. This is fixed in 1.8.5. This has been fixed in 1.8.5 and mitigations are available for impacted releases.
Weakness
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Kyverno | Kyverno | 1.8.3 (including) | 1.8.3 (including) |
| Kyverno | Kyverno | 1.8.4 (including) | 1.8.4 (including) |
Potential Mitigations
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/114.html
- https://cwe.mitre.org/data/definitions/115.html
- https://cwe.mitre.org/data/definitions/151.html
- https://cwe.mitre.org/data/definitions/194.html
- https://cwe.mitre.org/data/definitions/22.html
- https://cwe.mitre.org/data/definitions/57.html
- https://cwe.mitre.org/data/definitions/593.html
- https://cwe.mitre.org/data/definitions/633.html
- https://cwe.mitre.org/data/definitions/650.html
- https://cwe.mitre.org/data/definitions/94.html
References
- https://github.com/kyverno/kyverno/compare/v1.8.4...v1.8.5
- https://github.com/kyverno/kyverno/pull/5713
- https://github.com/kyverno/kyverno/releases/tag/v1.8.5
- https://github.com/kyverno/kyverno/security/advisories/GHSA-m3cq-xcx9-3gvm
- https://kyverno.io/docs/writing-policies/verify-images/
- https://github.com/kyverno/kyverno/compare/v1.8.4...v1.8.5
- https://github.com/kyverno/kyverno/pull/5713
- https://github.com/kyverno/kyverno/releases/tag/v1.8.5
- https://github.com/kyverno/kyverno/security/advisories/GHSA-m3cq-xcx9-3gvm
- https://kyverno.io/docs/writing-policies/verify-images/