github.com
https://github.com/kubernetes/ingress-nginx CVE-2021-25748
HIGH
Ingress-nginx `path` sanitization can be bypassed with newline character
Record summary
CVE-2021-25748 has a selected CVSS score of 7.6 (high).
Description
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.
Description source: CVE List
Exploitation context
CISA SSVC decision
ExploitationNone
AutomatableNo
Technical impactPartial
CISA Coordinator · SSVC 2.0.3 · Evaluated Jan 16, 2025 · Source: CVE List
Affected products and versions
2| Product | Source | Version range | Status |
|---|---|---|---|
Kubernetes ingress-nginxBrowse Kubernetes / Kubernetes ingress-nginx | CVE List | Before 1.2.1 | affected |
k8s.io/ingress-nginxBrowse Go / k8s.io/ingress-nginx | GitHub Advisory | Before 1.2.1 · Fixed in 1.2.1 | affected |
References
6github.com
https://github.com/kubernetes/ingress-nginx/issues/8686 github.com
https://github.com/kubernetes/ingress-nginx/pull/8623 github.com
https://github.com/kubernetes/ingress-nginx/releases/tag/controller-v1.2.1 groups.google.com
https://groups.google.com/g/kubernetes-security-announce/c/avaRYa9c7I8 nvd.nist.gov
https://nvd.nist.gov/vuln/detail/CVE-2021-25748