Auth bypass in Kyverno
CVE-2022-47633
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.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.010 (59.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- Kyverno — versions 1.8.3, 1.8.4
Weakness classification (CWE)
Public proof-of-concept exploits
References
- kyverno.io/docs/writing-policies/verify-images/ (Product)
- github.com/kyverno/kyverno/compare/v1.8.4...v1.8.5 (Patch, Third Party Advisory)
- github.com/kyverno/kyverno/releases/tag/v1.8.5 (Third Party Advisory, Release Notes)
- github.com/kyverno/kyverno/pull/5713 (Patch, Third Party Advisory)
- github.com/kyverno/kyverno/security/advisories/GHSA-m3cq-xcx9-3gvm (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-47633?
- CVE-2022-47633 is a high-severity vulnerability in Kyverno, classified under Improper Authentication. CVSS score: 8.1/10. Published 2022-12-23.
- How severe is CVE-2022-47633?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2022-47633 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.