Docker Security

Docker Security is a specialized area within cybersecurity focused on protecting the entire lifecycle of containerized applications built using the Docker platform. It encompasses a multi-layered approach that includes hardening the host operating system and the Docker daemon, ensuring the integrity of container images through vulnerability scanning and trusted registries, and enforcing strong isolation and the principle of least privilege for running containers. This practice aims to mitigate risks inherent to containerization, such as kernel exploits and container breakouts, by implementing security configurations, access controls, and runtime monitoring to safeguard the application and its underlying infrastructure.

1. Introduction to Container Security
   1. Overview of Containerization
      1. Definition of Containers
      2. Container Architecture Components
      3. Differences Between Containers and Virtual Machines
      4. Benefits of Containerization
      5. Security Risks of Containerization
   2. Core Security Principles
      1. Principle of Least Privilege
         1. Minimizing User Privileges
         2. Limiting Process Capabilities
         3. Application-Level Privilege Restrictions
      2. Defense in Depth
         1. Layered Security Controls
         2. Redundancy and Failover
         3. Multiple Security Boundaries
      3. Attack Surface Reduction
         1. Minimizing Installed Software
         2. Disabling Unused Services
         3. Reducing Network Exposure
   3. Understanding the Container Attack Surface
      1. Host Kernel Exploits
         1. Kernel Vulnerabilities
         2. Kernel Version Compatibility
         3. Shared Kernel Risks
      2. Container Breakouts
         1. Privilege Escalation Risks
         2. Escape Techniques and Mitigations
         3. Namespace Bypass Attacks
      3. Insecure Images and Dependencies
         1. Use of Untrusted Images
         2. Vulnerable Third-Party Packages
         3. Malicious Image Components
      4. Unsecured Docker Daemon API
         1. Remote API Exposure
         2. Default Configuration Risks
         3. Authentication Bypass
      5. Insecure Networking Configurations
         1. Open Ports and Services
         2. Network Sniffing and Spoofing
         3. Inter-Container Communication Risks
   4. The Docker Security Lifecycle
      1. Build Phase Security
         1. Secure Dockerfile Practices
         2. Dependency Management
         3. Static Analysis Integration
      2. Ship Phase Security
         1. Secure Image Storage
         2. Image Distribution Controls
         3. Registry Security
      3. Run Phase Security
         1. Runtime Security Controls
         2. Monitoring and Response
         3. Incident Management