Implementing Real-time CVE Detection

Real-time CVE detection requires monitoring multiple data sources and correlating information as new vulnerabilities are disclosed:
# kubernetes-cve-monitor.yaml
apiVersion: v1
kind: ConfigMap
metadata:
  name: cve-monitor-config
  namespace: security
data:
  monitor.py: |
    import asyncio
    import aiohttp
    from datetime import datetime
    import json
    
    class RealTimeCVEMonitor:
        def __init__(self, image_inventory):
            self.image_inventory = image_inventory
            self.cve_feeds = [
                'https://nvd.nist.gov/feeds/json/cve/1.1/nvdcve-1.1-recent.json.gz',
                'https://security-tracker.debian.org/tracker/data/json',
                'https://access.redhat.com/security/data/oval/v2/RHEL8/rhel-8.oval.xml.bz2'
            ]
            self.notification_endpoints = []
            
        async def monitor_cve_feeds(self):
            """Continuously monitor CVE feeds for new vulnerabilities"""
            while True:
                try:
                    new_cves = await self.fetch_new_cves()
                    affected_images = await self.check_affected_images(new_cves)
                    
                    if affected_images:
                        await self.send_alerts(affected_images)
                        await self.trigger_rescans(affected_images)
                        
                except Exception as e:
                    print(f"Error in CVE monitoring: {e}")
                    
                # Check every hour
                await asyncio.sleep(3600)
                
        async def fetch_new_cves(self):
            """Fetch CVEs published in the last 24 hours"""
            new_cves = []
            
            async with aiohttp.ClientSession() as session:
                for feed_url in self.cve_feeds:
                    async with session.get(feed_url) as response:
                        data = await response.json()
                        
                        # Filter for recent CVEs
                        for cve in data.get('CVE_Items', []):
                            published_date = cve['publishedDate']
                            if self.is_recent(published_date):
                                new_cves.append(self.parse_cve(cve))
                                
            return new_cves
            
        async def check_affected_images(self, cves):
            """Determine which images are affected by new CVEs"""
            affected = []
            
            for image in self.image_inventory:
                image_packages = await self.get_image_packages(image)
                
                for cve in cves:
                    if self.is_image_affected(image_packages, cve):
                        affected.append({
                            'image': image,
                            'cve': cve,
                            'severity': cve['cvss_v3']['baseSeverity'],
                            'packages': self.get_affected_packages(image_packages, cve)
                        })
                        
            return affected

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: cve-monitor
  namespace: security
spec:
  replicas: 1
  selector:
    matchLabels:
      app: cve-monitor
  template:
    metadata:
      labels:
        app: cve-monitor
    spec:
      serviceAccountName: cve-monitor
      containers:
      - name: monitor
        image: python:3.10-alpine
        command: ["python", "/app/monitor.py"]
        volumeMounts:
        - name: config
          mountPath: /app
        - name: image-inventory
          mountPath: /data
        env:
        - name: SLACK_WEBHOOK
          valueFrom:
            secretKeyRef:
              name: cve-monitor-secrets
              key: slack-webhook
        - name: TRIVY_SERVER
          value: "http://trivy-server:8080"
        resources:
          requests:
            memory: "256Mi"
            cpu: "100m"
          limits:
            memory: "512Mi"
            cpu: "500m"
      volumes:
      - name: config
        configMap:
          name: cve-monitor-config
      - name: image-inventory
        persistentVolumeClaim:
          claimName: image-inventory-pvc