CVE-2023-5044: Ingress-nginx code injection via nginx.ingress.kubernetes.io/permanent-redirect annotation

October 25, 2023 (updated February 13, 2025)

A security issue was identified in ingress-nginx where the nginx.ingress.kubernetes.io/permanent-redirect annotation on an Ingress object (in the networking.k8s.io or extensions API group) can be used to inject arbitrary commands, and obtain the credentials of the ingress-nginx controller. In the default configuration, that credential has access to all secrets in the cluster.

References

github.com/advisories/GHSA-fp9f-44c2-cw27
github.com/kubernetes/ingress-nginx
github.com/kubernetes/ingress-nginx/issues/10572
groups.google.com/g/kubernetes-security-announce/c/ukuYYvRNel0
nvd.nist.gov/vuln/detail/CVE-2023-5044
security.netapp.com/advisory/ntap-20240307-0012

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