TL;DR overview
- An open source package is a collection of publicly available, reusable code distributed under an open source license through package managers such as npm, PyPI, or Maven, enabling developers to integrate pre-built functionality into their projects.
- Key characteristics include collaborative development, source code transparency, and distribution via standardized tooling that simplifies installation and version management.
- Open source packages introduce security risks when they are not actively maintained or when vulnerabilities go unpatched, making continuous monitoring and proactive vetting of dependencies critical for reducing software supply chain risk.
- A proactive approach involves evaluating packages for license compliance, active maintenance, maintainer responsiveness, and sustainability before integrating them into a codebase.
What is an open source package?
An open source package is a collection of code, often organized into libraries or frameworks, that is made available to the public under an open source license. These packages are reusable components that anyone can use, modify, and share freely in their own projects. Open source packages are typically distributed through package managers like npm, PyPI, or Maven, allowing developers to easily integrate them into their software applications.
Key characteristics of open source packages
- Reusable code: open source packages provide developers with pre-written code for common functionalities—saving time and effort during development.
- Collaborative development: open source packages are often developed by a community of contributors, who work together to improve and maintain the package.
- Transparency: the source code of open source packages is publicly accessible, enabling developers to review, modify, or enhance it based on their needs.
- Distributed via package managers: package managers like npm (for JavaScript), PyPI (for Python), and Maven (for Java) make it easy to find, install, and update open source packages. A package manager is a tool that simplifies the tasks of installing, updating, configuring, and removing software on a computer.
- Open source license: each package is distributed under a license that outlines how it can be used, modified, and shared. Learn more about open source licenses in our article: What are open source licenses?
Why is open source software security important?
While open source packages offer many benefits, they also come with security risks. Open source software is widely used, and vulnerabilities in even a single package can have a cascading impact on many applications. Security issues arise when packages are not regularly maintained or when critical vulnerabilities are not promptly addressed.
To ensure the security of applications, organizations must monitor and address vulnerabilities in the open source packages they use. Managing open source software security through continuous monitoring, regular updates, vulnerability scanning, and patching is essential for reducing risks in the software supply chain. This is only the first step as this is the reactive approach to software security. Coupled with a proactive approach, organizations can better address software supply chain security threats.
A proactive approach includes vetting what open source software your organization is bringing into their code. Asking questions about a package such as:
- Does it conform to my organization’s license policies?
- Is it actively maintained or is it deprecated?
- Are the maintainers actively responding to security issues?
- Are the maintainers producing new releases?
- Are the maintainers supported by a foundation, a company, or other income sources?
Staying ahead of threats by ensuring the open source being brought in is actively maintained and secured helps minimize costly remediation and allows more time for development and innovation.
Learn more about software supply chain security and vulnerability management in the linked articles.
Conclusion
Open source packages are essential building blocks for modern software development, offering reusable code and promoting collaboration. However, with widespread use comes the responsibility to ensure security. By understanding and managing the risks associated with open source software, organizations can benefit from these packages while maintaining a strong security posture.