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Bun Security Essentials

Bun’s security surface is multi-faceted, covering the runtime, the package manager, the API surface, and supply chain security concerns in the underlying JavaScript ecosystem. Furthermore, in this course we explore the security implications of various types of security vulnerabilities in server-side JavaScript applications, specifically in the Bun runtime.

We extend our knowledge of insecure code patterns in JavaScript to security principles such as secure-by-default and secure-by-design and how they apply to the Bun runtime.

This course features a hands-on code review and exercises on vulnerable code patterns in Bun. It demonstrates the pitfalls, exploitation techniques, and security best practices developers should follow to mitigate these risks.

What you gain to learn

This course caters to JavaScript software developers who are building server-side JavaScript applications using Bun.

You’ll be provided with a rich and contextual security reference that aims to help developers and security professionals assess security risks in adopting Bun APIs and development practices.

You’ll learn the following security topics, insights, and security best practices when developing and deploying server-side JavaScript with Bun:

  • Bun’s security methodology and design principles in its high-level API surface and how they apply to secure-by-default and secure-by-design principles.
  • Security implications of various security vulnerabilities in server-side JavaScript applications, specifically in the Bun runtime.
  • Supply chain security concerns when using Bun as a package manager and how to de-risk these security risks.
  • Bun’s command injection vulnerabilities and how to mitigate them.
  • Bun’s path traversal vulnerabilities and how to mitigate them.

JavaScript Security Fundamentals for Bun Developers

Following are some of the topics covered in this course, geared and tailored for JavaScript developers who are building server-side JavaScript applications using Bun:

Secure Code Best Practices

  • Maybe you know JavaScript, but do you know how to write secure JavaScript code on the server?
  • Gain real-world security skills that are applicable in day-to-day usage of Bun APIs and development practices.

Defend Against Supply Chain Security in Open Source

  • You’ve heard of event-stream, XZ Utils, or ua-parser-js security incidents? Learn how to defend against these types of supply chain attacks.
  • Learn how to leverage security configuration best practices when using Bun as a package manager.

Practical Secure Coding Skills

  • Learn how to avoid insecure code that leads to Path Traversal vulnerabilities in Bun applications.
  • Learn how to mitigate Command Injection vulnerabilities in Bun’s API surface.

Practical Secure Coding Skills

  • NSA dubbed Security Misconfiguration as the #1 security risk in web applications. Learn how to avoid it in Bun applications.
  • Learn about Bun’s secure-by-default an secure-by-design principles, how to leverage them, why they matter, and how to apply them in regular Bun development practices.