CVE-2022-47633 — An image signature validation bypass vulnerability in Kyverno 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 container images into a protected Kubernetes cluster. This is fixed in 1.8.5. This has been fixed in 1.8.
Published
2022-12-23T00:00:00.000Z
Last modified
2025-04-15T03:22:55.828Z
01What is this vulnerability?
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.
02Affected products
| Vendor | Product | Versions |
|---|
| n | a / n/a | n/a |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.
07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2022-12-23T00:00:00.000Z
- Last modified: 2025-04-15T03:22:55.828Z
09References
- kyverno.io — https://kyverno.io/docs/writing-policies/verify-images/
- github.com — https://github.com/kyverno/kyverno/compare/v1.8.4...v1.8.5
- github.com — https://github.com/kyverno/kyverno/releases/tag/v1.8.5
- github.com — https://github.com/kyverno/kyverno/pull/5713
- github.com — https://github.com/kyverno/kyverno/security/advisories/GHSA-m3cq-xcx9-3gvm
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