kyverno verifyImages rule bypass possible with malicious proxy/registry
### Impact Users of Kyverno on versions 1.8.3 or 1.8.4 who use `verifyImages` rules to verify container image signatures, and do not prevent use of unknown registries. ### Patches This issue has been fixed in version [1.8.5](https://github.com/kyverno/kyverno/releases/tag/v1.8.5) ### Workarounds Configure a Kyverno policy to restrict registries to a set of secure trusted image registries ([sample](https://kyverno.io/policies/best-practices/restrict_image_registries/restrict_image_registries/)). ### References
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2022-47633US | high8.1 | — | ||
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 conta… | ||||
references
External citations — patches, advisories, analysis.
- https://github.com/kyverno/kyvernoPACKAGE
- https://github.com/kyverno/kyverno/compare/v1.8.4...v1.8.5WEB
- https://github.com/kyverno/kyverno/pull/5713WEB
- https://github.com/kyverno/kyverno/releases/tag/v1.8.5WEB
- https://github.com/kyverno/kyverno/security/advisories/GHSA-m3cq-xcx9-3gvmWEB
- https://kyverno.io/docs/writing-policies/verify-imagesWEB
- https://kyverno.io/policies/best-practices/restrict_image_registries/restrict_image_registriesWEB
- https://nvd.nist.gov/vuln/detail/CVE-2022-47633ADVISORY
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