CVE-2023-33191 — Kyverno is a policy engine designed for Kubernetes

Kyverno is a policy engine designed for Kubernetes. Kyverno seccomp control can be circumvented. Users of the podSecurity `validate.podSecurity` subrule in Kyverno 1.9.2 and 1.9.3 are vulnerable. This issue was patched in version 1.9.4.

01What is this vulnerability?

Kyverno is a policy engine designed for Kubernetes. Kyverno seccomp control can be circumvented. Users of the podSecurity `validate.podSecurity` subrule in Kyverno 1.9.2 and 1.9.3 are vulnerable. This issue was patched in version 1.9.4.

02Affected products

Vendor	Product	Versions
kyverno	kyverno	>= 1.9.2, < 1.9.4

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: 2023-05-30T06:06:14.987Z
• Last modified: 2025-01-10T19:00:31.962Z

09References

• github.com — https://github.com/kyverno/kyverno/security/advisories/GHSA-33hq-f2mf-jm3c
• github.com — https://github.com/kyverno/kyverno/pull/7263
• github.com — https://github.com/kyverno/kyverno/releases/tag/v1.9.4