Container images inherit vulnerabilities from their base images and installed packages. Integrating vulnerability scanning into your CI pipeline catches security issues before they reach production, shifting security left in the development process.
Integrating Scanners into CI/CD
Tools like Trivy, Grype, and Snyk Container analyze image layers against vulnerability databases, reporting CVEs with severity ratings. Configure your pipeline to fail builds when critical or high-severity vulnerabilities are detected, enforcing a security gate.
Base image selection significantly impacts your vulnerability surface. Alpine and distroless images contain far fewer packages than Ubuntu or Debian bases, resulting in fewer potential vulnerabilities. Multi-stage builds ensure only runtime dependencies make it into the final image.
Maintain a policy for addressing discovered vulnerabilities. Not every CVE requires immediate action鈥攅valuate exploitability in the context of your application. Establish SLAs for remediation: critical within 24 hours, high within one week, and medium within one month.