Overview (positioned as Security Architect)
I would define a risk-driven vulnerability management process that integrates into CI/CD, enforcement at the registry/runtime, prioritized remediation, safe rollouts, and emergency playbooks.
CI: image scanning & gating
- Enforce pipeline scanning (Trivy/Clair/Anchore) at build + PR.
- Fail builds on policy violations (e.g., high/critical CVEs, secret leaks).
- Sign images (Cosign/Notary) and attach SBOMs to artifacts.
Registry admission policies
- Registry-level admission with Gatekeeper/OPA: reject unsigned images, block images > policy score, block base-images on allowlist/denylist.
- Attach metadata: SBOM, scan timestamp, build ID.
CVE prioritization (scoring)
- Prioritize by: exploitability (E, public exploit or EoP), runtime exposure (network-facing, service mesh ingress), service criticality (business impact), privilege level, and compensating controls.
- Produce a numeric score: Priority = f(Exploitability, Exposure, Criticality) to drive SLAs (e.g., patch within 7 days for score > 80).
Patch rollout with canarying
- Automated canary cohorts: deploy patched image to small percentage, run smoke tests and runtime security rules (Falco, eBPF-based checks), monitor metrics (errors, latency, security alerts) for a predefined window, then progressive rollout with automated rollback on anomalies.
- Use feature flags and traffic shifting (Istio/Linkerd) to limit blast radius.
Emergency mitigation plan
- Fast paths: image rollback to last signed build; network-level mitigations (K8s NetworkPolicy, service mesh deny rules); runtime controls (kill/ quarantine pods via orchestration or eBPF); WAF rules or IPS signatures if applicable.
- Incident runbook with roles, decision criteria, and communication templates.
KPIs (measure effectiveness)
- Mean Time to Remediate critical CVEs (MTTR) — target < 7 days.
- % of images scanned and SBOM-attached before registry push — target 100%.
- % of deployments passing admission policy — target 99% enforced.
- % of successful canary rollouts without rollback — trend upward.
- Number of production exploit detections vs. pre-production detections (ratio should decrease).
This approach ties technical controls to risk and business impact while enabling measurable, fast, and safe remediation.
