CloudGuard WAF
  • Documentation Overview
  • What is CloudGuard WAF?
  • Getting started
    • Prepare key information
    • Log in to the Infinity Portal
    • Protect a Web Application / API
    • Deploy Enforcement Point
      • Gateway/Virtual Machine
        • AWS
          • Store Certificates in AWS
          • Store certificates on Gateway
        • Azure
          • Store Certificates in Azure
          • Store Certificates on Gateway
        • VMware
          • Store Certificates on Gateway
          • Configure networking in VMware Deployments
      • WAF as a Service
        • Certificates Managed by Check Point
        • Bring Your Own Certificate
      • Kubernetes Ingress
        • Kong Application Security
        • Istio Application Security
      • Docker
        • Single Docker
          • Deployment using 'docker' command
            • Store Certificates Locally on Docker
          • Deployment in Azure App Services
        • Dual Docker: NGINX/Kong/Envoy + Security Agent
      • Linux / NGINX / Kong
    • Monitor Events
  • Concepts
    • Gateways & Agents
    • Management & Automation
    • Security Practices
    • Contextual Machine Learning
  • Additional Security Engines
    • Anti-Bot
    • API Protection
      • API Discovery
      • Track API Discovery Learning
      • Enforce API Schema
    • File Security
    • Intrusion Prevention System (IPS)
    • Rate Limit
    • Snort Rules
  • SETUP INSTRUCTIONS
    • Setup Custom Rules and Exceptions
    • Setup Web User Response Pages
    • Setup Log Triggers
    • Setup Report Triggers
    • Setup Notification Triggers
    • Setup Behavior Upon Failure
    • Setup Agent Upgrade Schedule
  • HOW TO
    • Edit Web Application/API Settings
    • Edit Reverse Proxy Advanced Settings for a Web Asset
    • Protect an existing production site with CloudGuard WAF's Gateway
    • View Policy of all your Web Applications/APIs
    • Add Data Loss Prevention (DLP) rules
    • Configure Contextual Machine Learning for Best Accuracy
    • Track Agent Status
    • Track Learning and Move from Learn/Detect to Prevent
    • Rotate profile authentication token
    • Upgrade your Reverse Proxy when a Linux/NGINX agent is installed
    • Use Terraform to Manage CloudGuard WAF
    • Authorize Temporary Access for Check Point Support
    • Restrict Access to Backend Servers from CloudGuard WAF as a Service IPs Only
  • Troubleshooting
    • WAF Gateway / Virtual Machine
      • Azure
        • "Unable to find a tag containing the vault's name in the VMSS" Error
        • How To: Configure Key Vault for a Single Gateway
      • NGINX Error: Upstream Sent Too Big Header While Reading Response Header from Upstream
      • How To: Compare Between the Gateway's Certificate and the Upstream Certificate
    • Linux
      • SELinux: Checking Status and Disabling
    • WAF as a Service
      • Certificate Validation Failed: Adjusting CAA Record
      • How To: Redirect a Root Domain to a Subdomain Protected by WAF SaaS
      • How To: Extend Connection Timeout to Upstream
      • How To: Update Expired Certificates
  • references
    • Agent CLI
    • Management API
    • Event Query Language
    • Writing Snort Signatures
    • Events/Logs Schema
    • CVE-2022-3786 and CVE-2022-3602: OpenSSL X.509 Email Address Buffer Overflows (HIGH)
    • CVE-2025-1097, CVE-2025-1098, CVE-2025-24514, CVE-2025-1974: Ingress NGINX Controller RCE (Critical)
  • Resources
    • GitHub
    • Docker Hub
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On this page
  • Background
  • Updates to CloudGuard WAF Nano Agent for Kubernetes (K8s)

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  1. references

CVE-2025-1097, CVE-2025-1098, CVE-2025-24514, CVE-2025-1974: Ingress NGINX Controller RCE (Critical)

PreviousCVE-2022-3786 and CVE-2022-3602: OpenSSL X.509 Email Address Buffer Overflows (HIGH)NextGitHub

Last updated 1 month ago

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Background

On March 24, 2025, WIZ Research disclosed critical vulnerabilities in the Kubernetes Ingress NGINX Controller that allow unsensitized user input to be injected into the temporary NGINX configuration file during validation. This unsensitized input, when processed by the nginx -t command, can lead to remote code execution (RCE) on the pod running the controller.

Additional information can be found in .

Important Note: In order to exploit this vulnerability, the attacker must have network access to the ingress controller’s pod to send arbitrary AdmissionReview requests. While such access is not available by default in many environments, it can be achieved if the attacker gains a foothold within the cluster - such as through compromising another pod - or by leveraging SSRF vulnerabilities. This requirement raises the barrier for exploitation, although it does not eliminate the risk.

Updates to CloudGuard WAF Nano Agent for Kubernetes (K8s)

Our security team verified that our Helm chart deployment of open-appsec / Check Point CloudGuard WAF - which uses the Ingress NGINX Controller - was affected by these vulnerabilities. To address this issue, within 24 hours, we provided the fix by updating the controller to version 1.21.1, which includes all the necessary patches and improvements to ensure proper sanitization of user inputs during configuration generation.

To keep your systems safe, we recommend updating your NGINX helm. You can find all detailed deployment steps with updated Helm chart versions here:

We highly recommend updating your deployment as soon as possible to ensure everything stays secure.

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Kubernetes Ingress