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sec-design.md

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Okay, let's create a design document for the font-mfizz project.

BUSINESS POSTURE

Business Priorities and Goals:

  • Provide a free, open-source, and easily embeddable icon font (MFizz) for developers.
  • Offer a wide range of development-related icons.
  • Ensure the font is lightweight and performs well.
  • Maintain a well-documented and easy-to-use project.
  • Provide build tools to customize the font.

Business Risks:

  • Malicious modification of the font files (e.g., during distribution) could lead to security vulnerabilities in applications using the font.
  • Lack of updates or maintenance could lead to the font becoming outdated or incompatible with newer technologies.
  • Insufficient documentation or support could hinder adoption.
  • Vulnerabilities in the build process could allow for the injection of malicious code.

SECURITY POSTURE

Existing Security Controls:

  • security control: The project is hosted on GitHub, which provides inherent security features like access control, code scanning (if enabled), and audit trails.
  • security control: Version control (Git) allows tracking changes and reverting to previous states if necessary.
  • security control: The project uses a permissive open-source license (MIT), which encourages community scrutiny and contributions.
  • security control: The build process is defined in a pom.xml file (Maven), which provides a standardized and reproducible build.

Accepted Risks:

  • accepted risk: The project does not appear to have dedicated security audits or penetration testing.
  • accepted risk: The project relies on external dependencies (Maven plugins, Java libraries), which could introduce vulnerabilities.
  • accepted risk: The project's documentation does not explicitly address security considerations for users embedding the font.

Recommended Security Controls:

  • Implement a Content Security Policy (CSP) configuration example in the documentation to guide users on mitigating potential XSS risks when using the font.
  • Provide checksums (e.g., SHA-256) for released font files to allow users to verify their integrity.
  • Consider enabling GitHub's built-in security features like code scanning and dependency analysis.
  • Document best practices for securely serving the font files (e.g., using HTTPS, setting appropriate cache headers).
  • Regularly update dependencies to address known vulnerabilities.
  • Consider signing releases.

Security Requirements:

  • Authentication: Not directly applicable to this project, as it's a static font resource. However, access to the GitHub repository and build system should be protected with strong authentication.
  • Authorization: Not directly applicable, but repository access should be managed based on the principle of least privilege.
  • Input Validation: Not directly applicable to the font itself. However, any build scripts or tools should validate inputs to prevent injection vulnerabilities.
  • Cryptography: Not directly used in the font itself. However, HTTPS should be used when serving the font, and checksums should be provided for integrity verification.

DESIGN

C4 CONTEXT

graph LR
    User["User/Developer"] -- "Uses" --> Mfizz["Font Mfizz Project"]
    Mfizz -- "Downloads from" --> GitHub["GitHub Repository"]
    Mfizz -- "Builds with" --> Maven["Maven Build System"]
	Mfizz -- "Downloads dependencies" --> MavenCentral["Maven Central"]
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C4 Context Element List:

  • User/Developer

    • Name: User/Developer
    • Type: Person
    • Description: A developer who integrates the Font Mfizz icon font into their web application or project.
    • Responsibilities: Downloads the font, includes it in their project, and uses the provided CSS classes to display icons.
    • Security controls: Should follow security best practices when embedding the font, such as using a Content Security Policy.

  • Font Mfizz Project

    • Name: Font Mfizz Project
    • Type: Software System
    • Description: The core project, providing the icon font and build tools.
    • Responsibilities: Provides the font files, CSS, and build scripts.
    • Security controls: Version control, open-source license, build process defined in pom.xml.

  • GitHub Repository

    • Name: GitHub Repository
    • Type: External System
    • Description: The source code repository and hosting platform for the project.
    • Responsibilities: Stores the project's source code, manages versions, and provides collaboration tools.
    • Security controls: GitHub's built-in security features (access control, code scanning, audit trails).

  • Maven Build System

    • Name: Maven Build System
    • Type: External System
    • Description: The build automation tool used to compile and package the project.
    • Responsibilities: Manages dependencies, compiles code, and generates build artifacts.
    • Security controls: Uses a standardized pom.xml file for reproducible builds.

  • Maven Central

    • Name: Maven Central
    • Type: External System
    • Description: Central repository for Java libraries and Maven artifacts.
    • Responsibilities: Provides access to project dependencies.
    • Security controls: Relies on Maven Central's security measures.

C4 CONTAINER

graph LR
    User["User/Developer"] -- "Uses" --> FontFiles["Font Files (woff, ttf, svg, eot)"]
    User -- "Uses" --> CSS["CSS File (font-mfizz.css)"]
    Build["Maven Build Process"] --> FontFiles
    Build --> CSS
    Build -- "Uses" --> Config["Configuration (JSON)"]
	Build -- "Downloads dependencies" --> MavenCentral["Maven Central"]
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C4 Container Element List:

  • User/Developer

    • Name: User/Developer
    • Type: Person
    • Description: A developer who integrates the Font Mfizz icon font into their web application or project.
    • Responsibilities: Downloads the font, includes it in their project, and uses the provided CSS classes to display icons.
    • Security controls: Should follow security best practices when embedding the font, such as using a Content Security Policy.

  • Font Files

    • Name: Font Files (woff, ttf, svg, eot)
    • Type: Container
    • Description: The actual font files in various formats for cross-browser compatibility.
    • Responsibilities: Provide the glyphs for the icons.
    • Security controls: Checksums should be provided for integrity verification.

  • CSS File

    • Name: CSS File (font-mfizz.css)
    • Type: Container
    • Description: The CSS file that defines the classes and styles for using the icons.
    • Responsibilities: Maps icon names to the corresponding glyphs in the font files.
    • Security controls: Should be served with appropriate security headers (e.g., X-Content-Type-Options).

  • Maven Build Process

    • Name: Maven Build Process
    • Type: Container
    • Description: The build process defined in the pom.xml file.
    • Responsibilities: Generates the font files and CSS based on the configuration.
    • Security controls: Uses a standardized build system, should be regularly updated to address vulnerabilities in dependencies.

  • Configuration

    • Name: Configuration (JSON)
    • Type: Container
    • Description: Configuration files (likely JSON) that define the icons to be included in the font.
    • Responsibilities: Controls the content and customization of the generated font.
    • Security controls: Should be validated to prevent injection vulnerabilities.

  • Maven Central

    • Name: Maven Central
    • Type: External System
    • Description: Central repository for Java libraries and Maven artifacts.
    • Responsibilities: Provides access to project dependencies.
    • Security controls: Relies on Maven Central's security measures.

DEPLOYMENT

Possible Deployment Solutions:

  1. Direct download from GitHub: Users download the font files directly from the GitHub repository.
  2. Content Delivery Network (CDN): The font files are hosted on a CDN like jsDelivr or UNPKG.
  3. Self-hosting: Users download the font files and host them on their own web servers.
  4. Package managers: Users install font using package managers like npm.

Chosen Deployment Solution (CDN - jsDelivr):

graph LR
    User["User/Developer's Website"] -- "HTTPS" --> CDN["CDN (jsDelivr)"]
    CDN -- "HTTPS" --> GitHub["GitHub Releases"]
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Deployment Element List:

  • User/Developer's Website

    • Name: User/Developer's Website
    • Type: Deployment Node
    • Description: The website or application where the Font Mfizz icon font is used.
    • Responsibilities: Serves the website content, including the font files.
    • Security controls: Should use HTTPS, implement a Content Security Policy, and set appropriate security headers.

  • CDN (jsDelivr)

    • Name: CDN (jsDelivr)
    • Type: Deployment Node
    • Description: A Content Delivery Network that hosts the Font Mfizz files.
    • Responsibilities: Provides fast and reliable delivery of the font files to users.
    • Security controls: Uses HTTPS, provides caching, and has its own security measures.

  • GitHub Releases

    • Name: GitHub Releases
    • Type: Deployment Node
    • Description: The release section of the GitHub repository, where tagged versions of the font are published.
    • Responsibilities: Stores the official releases of the font files.
    • Security controls: GitHub's built-in security features.

BUILD

graph LR
    Developer["Developer"] -- "Commits code" --> GitHub["GitHub Repository"]
    GitHub -- "Triggers" --> Maven["Maven Build (pom.xml)"]
    Maven -- "Downloads dependencies" --> MavenCentral["Maven Central"]
    Maven -- "Generates" --> FontFiles["Font Files (woff, ttf, svg, eot)"]
    Maven -- "Generates" --> CSS["CSS File"]
	Maven -- "Runs" --> Tests["Tests"]
    FontFiles -- "Published to" --> GitHubRelease["GitHub Releases"]
    CSS -- "Published to" --> GitHubRelease
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Build Process Description:

  1. A developer commits code changes to the GitHub repository.
  2. The changes trigger the Maven build process, defined in the pom.xml file.
  3. Maven downloads necessary dependencies from Maven Central.
  4. Maven executes build steps, including:
    • Reading configuration files (likely JSON) that define the icons.
    • Generating the font files in various formats (woff, ttf, svg, eot).
    • Generating the CSS file.
    • Running tests.
  5. The generated font files and CSS are published as a GitHub Release.

Build Security Controls:

  • security control: The build process is automated using Maven, ensuring consistency and reproducibility.
  • security control: Dependencies are managed through Maven, allowing for version control and vulnerability scanning (if enabled).
  • security control: The build process can be integrated with CI/CD pipelines (e.g., GitHub Actions) for automated testing and security checks.
  • security control: Tests are executed as part of the build.

RISK ASSESSMENT

Critical Business Processes:

  • Providing a reliable and accessible icon font for developers.
  • Maintaining the integrity and security of the font files.

Data to Protect:

  • Source code of the font and build tools (low sensitivity, publicly available).
  • Configuration files (low sensitivity, publicly available).
  • Generated font files (low sensitivity, publicly available, but integrity is crucial).
  • User data: None directly handled by the project.

QUESTIONS & ASSUMPTIONS

Questions:

  • Are there any specific security requirements or compliance standards that the project needs to adhere to?
  • What is the expected frequency of updates and maintenance for the font?
  • Are there any plans to integrate with other platforms or tools?
  • What is the process for reporting and addressing security vulnerabilities?

Assumptions:

  • BUSINESS POSTURE: The primary goal is to provide a free and useful resource for developers, with a focus on ease of use and accessibility.
  • SECURITY POSTURE: The project relies on the inherent security of GitHub and Maven, along with basic security best practices.
  • DESIGN: The design is relatively simple, with a focus on generating static font files and CSS. The deployment model assumes users will either download the files directly, use a CDN, or self-host.