Malicious Code Injection in ruji-20 Package: A Threat to npm Ecosystem
Summary
MAL-2025-165245: Malicious code in ruji-20 (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The ruji-20 package is part of the npm ecosystem, which is widely used for JavaScript package management. This package, like many others, is intended to facilitate the development of applications by providing reusable code. However, it has been identified as part of a malicious campaign that aims to exploit the npm registry by flooding it with derivative packages that can inflate developer reputation scores for token rewards.
Vulnerability Detail
The vulnerability in the ruji-20 package stems from its association with the tea.xyz token reward campaign. It contains malicious scripts that modify the package.json file to remove private flags, alter version numbers, and generate random package names. This behavior leads to the continuous republishing of these variants, which pollutes the npm registry and can compromise the integrity of the ecosystem. The malicious payload can potentially allow unauthorized access to sensitive information and disrupt the normal functioning of applications relying on this package.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall ruji-20If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a temporary measure, you can remove the ruji-20 package from your project to prevent any potential exploitation. You can do this by executing the command: npm uninstall ruji-20. Additionally, consider using tools like Vulert to monitor your project for vulnerabilities in real-time.
Conclusion
The ruji-20 package poses a significant threat to the npm ecosystem due to its malicious code designed to exploit the registry. It is essential for developers to take immediate action by uninstalling the package and monitoring their projects for vulnerabilities. Utilizing tools like Vulert can provide additional security and peace of mind.
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FAQ
The ruji-20 package is an npm package that has been identified as part of a malicious campaign aimed at exploiting the npm registry.
The malicious code can modify your package.json file, remove private flags, and republish variants, potentially compromising your application's integrity.
You should uninstall the ruji-20 package immediately and monitor your project for vulnerabilities using tools like Vulert.
Regularly update your packages, use tools to monitor for vulnerabilities, and review the packages you include in your projects.
Vulert monitors your package-lock.json file to alert you in real-time about open-source vulnerabilities, helping you maintain a secure application.
