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Threat Model Analysis for krzysztofzablocki/sourcery

Threat: Malicious Template Injection

  • Threat: Malicious Template Injection

    • Description: An attacker gains unauthorized access to the repository containing Sourcery templates and modifies a template to include malicious code. The attacker injects code that performs actions like exfiltrating data, installing backdoors, or modifying application behavior.
    • Impact: Arbitrary code execution within the application, leading to data breaches, system compromise, or other severe security incidents. Application integrity and confidentiality are compromised.
    • Affected Sourcery Component: .stencil or .swifttemplate files (the template files themselves). The Sourcery.parseTemplates function and related parsing logic are directly affected.
    • Risk Severity: Critical
    • Mitigation Strategies:
      • Implement strict access controls and multi-factor authentication for the template repository.
      • Mandatory code reviews (with a security focus) for all template changes.
      • Regular security audits of the repository and access controls.
      • Consider using a separate, highly secured repository for templates.
      • Implement code signing for templates (if feasible).
      • Vulnerability scanning and dependency management for any libraries used within the templates.
      • Template linting to detect common security issues.

Threat: Unintentional Vulnerability Introduction via Template Logic

  • Threat: Unintentional Vulnerability Introduction via Template Logic

    • Description: A developer makes an error in a Sourcery template's logic, leading to the generation of insecure code. This could result in vulnerabilities like SQL injection, XSS, or insecure deserialization, depending on the generated code's purpose.
    • Impact: The generated code contains exploitable vulnerabilities, potentially leading to data breaches, unauthorized access, or other security compromises.
    • Affected Sourcery Component: .stencil or .swifttemplate files (the template files). The specific logic within the template (loops, conditionals, filters) is the source. Sourcery.generate is directly affected.
    • Risk Severity: High to Critical (depending on the vulnerability)
    • Mitigation Strategies:
      • Thorough code reviews of templates, emphasizing security.
      • Extensive security testing (penetration testing, static analysis) of the generated code.
      • Unit testing of the template logic itself.
      • Developer training on secure coding and secure Sourcery use.
      • "Least privilege" design for templates.
      • Well-defined coding style and conventions for templates.

Threat: Sourcery Configuration Tampering

  • Threat: Sourcery Configuration Tampering

    • Description: An attacker modifies the Sourcery configuration file (.sourcery.yml) or the environment in which Sourcery runs to alter code generation. The attacker might change output paths, disable checks, or inject malicious arguments.
    • Impact: Generation of malicious code or disruption of the build process, potentially overwriting existing application code.
    • Affected Sourcery Component: .sourcery.yml (the configuration file), and the Sourcery.run or equivalent command-line execution. Environment variables used by Sourcery are also targets.
    • Risk Severity: High
    • Mitigation Strategies:
      • Protect .sourcery.yml with the same security as templates (access control, code review).
      • Secure the CI/CD pipeline and build environment.
      • Monitor the execution environment for unauthorized changes.
      • Use a checksum or hash of the configuration file.

Threat: Sensitive Information Leakage in Templates or Generated Code

  • Threat: Sensitive Information Leakage in Templates or Generated Code

    • Description: A template inadvertently includes sensitive information (API keys, credentials) in the generated code, or the template itself contains secrets that are exposed if the repository is compromised.
    • Impact: Exposure of sensitive data, leading to unauthorized access or data breaches.
    • Affected Sourcery Component: .stencil or .swifttemplate files (the template files), and the generated output files.
    • Risk Severity: High
    • Mitigation Strategies:
      • Never store secrets in templates or the configuration.
      • Use environment variables or a secure configuration management system.
      • Review templates for accidental inclusion of sensitive data.
      • Use secrets scanning tools.

Threat: Sourcery Core Vulnerability (Less Likely, but Possible)

  • Threat: Sourcery Core Vulnerability (Less Likely, but Possible)
    • Description: A vulnerability exists within Sourcery's core code itself (e.g., in the parsing logic, template engine, or command-line interface). An attacker exploits this vulnerability to gain elevated privileges or execute arbitrary code.
    • Impact: Potentially arbitrary code execution with the privileges of the user running Sourcery, which could lead to system compromise.
    • Affected Sourcery Component: The core Sourcery codebase (e.g., Sourcery.swift, parsing logic, template engine).
    • Risk Severity: High
    • Mitigation Strategies:
      • Keep Sourcery updated to the latest version.
      • Run Sourcery with the least necessary privileges.
      • Monitor for security advisories related to Sourcery.
      • Consider running Sourcery in a sandboxed environment.