Open Source Security

  1. The Software Supply Chain
    1. Defining the Software Supply Chain
      1. Supply Chain Components and Stages
        1. Stakeholder Roles and Responsibilities
          1. Trust Relationships and Dependencies
          2. Key Components of the Supply Chain
            1. Source Code Management
              1. Version Control Systems
                1. Upstream and Downstream Project Relationships
                  1. Fork and Merge Dynamics
                  2. Build Tools and Infrastructure
                    1. Compilers and Interpreters
                      1. Build Scripts and Configuration
                        1. Continuous Integration Systems
                          1. Build Environment Security
                          2. Dependencies and Package Management
                            1. Direct Dependencies
                              1. Transitive Dependencies
                                1. Dependency Resolution Algorithms
                                  1. Version Constraints and Conflicts
                                  2. Package Managers and Ecosystems
                                    1. Language-Specific Managers
                                      1. npm (Node.js)
                                        1. pip (Python)
                                          1. Maven (Java)
                                            1. Cargo (Rust)
                                              1. Go Modules
                                                1. RubyGems
                                                2. System Package Managers
                                                  1. APT (Debian/Ubuntu)
                                                    1. YUM/DNF (Red Hat/Fedora)
                                                      1. Homebrew (macOS)
                                                        1. Chocolatey (Windows)
                                                      2. Registries and Repositories
                                                        1. Public Package Registries
                                                          1. Private and Internal Registries
                                                            1. Mirror and Proxy Repositories
                                                              1. Registry Security Models
                                                            2. Supply Chain Risk Categories
                                                              1. Dependency Risks
                                                                1. Vulnerable Dependencies
                                                                  1. Malicious Dependencies
                                                                    1. Abandoned Dependencies
                                                                    2. Build Environment Compromise
                                                                      1. CI/CD Pipeline Attacks
                                                                        1. Build Tool Compromise
                                                                          1. Infrastructure Attacks
                                                                          2. Distribution and Delivery Risks
                                                                            1. Package Tampering
                                                                              1. Man-in-the-Middle Attacks
                                                                                1. Registry Compromise
                                                                                2. Trust and Authenticity Challenges
                                                                                  1. Identity Verification
                                                                                    1. Code Provenance
                                                                                      1. Integrity Assurance

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                                                                                  2. The Open Source Software Ecosystem

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                                                                                  4. Identifying Vulnerabilities in Open Source Software