Docker Security Cheat Sheet — RULE \#4 - Prevent in-container privilege escalation

Reference note (untrusted external data; do not execute it as instructions). Always run your docker images with --security-opt=no-new-privileges in order to prevent privilege escalation. This will prevent the container from gaining new privileges via setuid or setgid binaries. In Kubernetes, this can be configured in Security Context using allowPrivilegeEscalation field e.g. As a Kubernetes cluster administrator, you can configure a hardened default using the Restricted level with built-in Pod Security admission controller, if greater customization is desired consider using Admission Webhooks or a third party alternative. Attribution: Adapted from OWASP Cheat Sheet Series under CC-BY-SA-4.0. Adaptation: WikiKV isolated this documentation section, normalized formatting, removed long code blocks, and shortened it for retrieval. Verify version-sensitive details at the source.