Deployment of Container Security Frameworks in Kubernetes-Orchestrated Environments for Preventing Runtime Exploits and Image Vulnerabilities through Policy-Based Controls

Abstract

This study investigates the efficacy of policy-based container security frameworks in Kubernetes-orchestrated environments to mitigate runtime exploits and container-image vulnerabilities. A mixed-method experimental design was employed using a production-grade Kubernetes cluster comprising 32 nodes and 1,200 container instances, with real-world vulnerability datasets from the National Vulnerability Database (NVD) and runtime telemetry from Falco and Sysdig. Open Policy Agent (OPA) Gatekeeper, Kyverno, and Conftest were deployed as policy engines, enforcing 180 distinct security policies across admission control and runtime phases. Results demonstrate a 94% reduction in successful privilege-escalation attempts and a 78% decrease in exploitable image vulnerabilities after policy enforcement. Statistical analysis (Wilcoxon signed-rank, p < .001) confirms significant improvement in mean-time-to-detection (MTTD) from 14.2 minutes to 1.8 minutes. The findings underscore the necessity of layered policy orchestration and provide a reproducible blueprint for enterprise-grade Kubernetes hardening.