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2025-012: Critical Vulnerabilities in Kubernetes Ingress-NGINX ↗ source

March 25, 2025 CERT-EU Advisory

Summary

The vulnerabilities CVE-2025-1097, CVE-2025-1098, CVE-2025-24514, and CVE-2025-1974 can be exploited to gain full cluster access, resulting in a complete compromise of the environment [1,2]. The vulnerabilities affect a widely used component in Kubernetes environments responsible for routing external traffic to internal services. Clusters with publicly exposed admission webhooks The vulnerability CVE-2025-1097, with a CVSS score of 8.8, allows an unauthenticated remote attacker to inject configuration into nginx using the auth-tls-match-cn Ingress annotation. This can lead to arbitrary code execution in the context of the ingress-nginx controller, and disclosure of Secrets accessible to the controller. (Note that in the default installation, the controller can access all Secrets cluster-wide.) The vulnerability CVE-2025-1098, with a CVSS score of 8.8, allows an unauthenticated remote attacker arbitrary configuration into nginx using the mirror-target and mirror-host Ingress annotations. This can lead to arbitrary code execution in the context of the ingress-nginx controller, and disclosure of Secrets accessible to the controller. (Note that in the default installation, the controller can access all Secrets cluster-wide.) The vulnerability CVE-2025-24514, with a CVSS score of 8.

News Coverage

No coverage found in monitored research blogs or news feeds.

CVEs Referenced in This Publication

CVECVSSAffected
CVE-2025-1974 9.8 Critical kubernetes ingress-nginx A security issue was discovered in Kubernetes where under certain conditions, an unauthenticated attacker with access to the pod network can achieve …
CVE-2025-1097 8.8 High kubernetes ingress-nginx A security issue was discovered in ingress-nginx https://github.com/kubernetes/ingress-nginx where the `auth-tls-match-cn` Ingress annotation can b…
CVE-2025-1098 8.8 High kubernetes ingress-nginx A security issue was discovered in ingress-nginx https://github.com/kubernetes/ingress-nginx where the `mirror-target` and `mirror-host` Ingress an…
CVE-2025-24514 8.8 High kubernetes ingress-nginx A security issue was discovered in ingress-nginx https://github.com/kubernetes/ingress-nginx where the `auth-url` Ingress annotation can be used to…

Extracted from the publication text. Each CVE links to its tracked detail page.

Vendors Named in This Publication

Each vendor links to its Known Exploited Vulnerabilities catalog page. Only vendors that appear in the KEV catalog are listed, either because the publication cites one of their KEV entries or because it names them directly.