CVE-2021-25748

GHSA-863x-868h-968x, CVE-2021-25748

go/k8s.io/ingress-nginx

Ingress-nginx path sanitization can be bypassed with newline character

A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can use a newline character to bypass the sanitization of the spec.rules[].http.paths[].path field of an Ingress object (in the networking.k8s.io or extensions API group) to obtain the credentials of the ingress-nginx controller. In the default configuration, that credential has access to all secrets in the cluster.

All versions before 1.2.1

Upgrade to version 1.2.1 or above.

2023-05-25