#VU105990 Permissions, Privileges, and Access Controls in Ingress-NGINX Controller for Kubernetes - CVE-2025-1097

Vulnerability identifier: #VU105990

Vulnerability risk: Medium

CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2025-1097

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Ingress-NGINX Controller for Kubernetes
Server applications / Other server solutions

Vendor: Kubernetes

Description

The vulnerability allows a remote user to escalate privileges on the system.

The vulnerability exists due to an error where the "auth-tls-match-cn" Ingress annotation can be used to inject configuration into nginx. A remote authenticated user can execute arbitrary code in the context of the ingress-nginx controller.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Ingress-NGINX Controller for Kubernetes: 1.0.0 - 1.12.0

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External links
https://github.com/kubernetes/kubernetes/issues/131007
https://github.com/kubernetes/ingress-nginx/releases/tag/controller-v1.12.1
https://github.com/kubernetes/ingress-nginx/releases/tag/controller-v1.11.5
https://github.com/advisories/GHSA-823x-fv5p-h7hw

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.