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Help Center/ Cloud Container Engine_Autopilot/ Product Bulletin/ Vulnerability Notices/ Notice of the NGINX Ingress Controller Vulnerability That Allows Attackers to Bypass Annotation Validation (CVE-2024-7646)

Notice of the NGINX Ingress Controller Vulnerability That Allows Attackers to Bypass Annotation Validation (CVE-2024-7646)

Updated on 2025-01-16 GMT+08:00

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Description

**Table 1** Vulnerability details
Type	CVE-ID	Severity	Discovered
Validation bypass and command injection	CVE-2024-7646	Critical	2024-08-19

Impact

Attackers with permissions to create ingresses in Kubernetes clusters (in networking.k8s.io or extensions API group) can exploit a vulnerability in ingress-nginx earlier than v1.11.2. This allows them to bypass annotation validation and inject arbitrary commands, potentially gaining access to the credentials of the ingress-nginx controller and sensitive information in a cluster.

This vulnerability is involved when the NGINX Ingress Controller add-on earlier than 2.4.14 is installed in a CCE Autopilot cluster.

Identification Method

Use kubectl to search for pods related to cceaddon-nginx-ingress.
```
kubectl get po -A | grep cceaddon-nginx-ingress
```
If similar information is displayed, the NGINX Ingress Controller add-on has been installed in the cluster.
Check the nginx-ingress image version used by the NGINX Ingress Controller add-on.
```
kubectl get deploy cceaddon-nginx-ingress-controller -nkube-system -oyaml|grep -w image
```
If the installed NGINX Ingress Controller add-on has an nginx-ingress version earlier than v1.11.2, this vulnerability is present.

Solution

This vulnerability has been fixed for the NGINX Ingress Controller add-on in the CCE Autopilot cluster. Upgrade the add-on to the version where the vulnerability has been fixed.

Fixed add-on version: 2.4.14 or later