Malicious Code Injection in erwin-rujak19-ruro: A Threat to npm Ecosystem
Summary
MAL-2025-102226: Malicious code in erwin-rujak19-ruro (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The package 'erwin-rujak19-ruro' is part of a series of npm packages that have been linked to a token reward campaign by tea.xyz. These packages are designed to manipulate npm's publishing system, often flooding the registry with derivative packages that have randomized names. This behavior not only affects the integrity of the npm ecosystem but also poses risks to developers who may unknowingly use these compromised packages.
Vulnerability Detail
The vulnerability in 'erwin-rujak19-ruro' originates from its malicious payload, which modifies the package.json file to remove private flags and alters version numbers. It generates random package names, often themed around Indonesian culture, and continuously republishes these variants to pollute the npm registry. This can lead to developers inadvertently using compromised packages, which may contain harmful scripts or functions that compromise their applications.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall erwin-rujak19-ruroIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a temporary workaround, you can avoid using the 'erwin-rujak19-ruro' package and look for alternative packages that provide similar functionality without the associated risks. Additionally, consider using tools like Vulert to monitor your project for vulnerabilities in real-time.
Conclusion
The 'erwin-rujak19-ruro' package poses a significant risk due to its malicious code that manipulates npm's publishing system. It is crucial for developers to be vigilant and take immediate action to remove this package and monitor their projects for vulnerabilities. Utilizing tools like Vulert can help maintain the integrity of your software.
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FAQ
The main issue is that it contains malicious code that modifies package.json files and floods the npm registry with compromised packages.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
If you have installed the package, you should uninstall it immediately using 'npm uninstall erwin-rujak19-ruro' and check for any other affected dependencies.
While specific alternatives depend on the functionality you need, consider searching npm for similar packages that do not have a history of malicious behavior.
To prevent similar vulnerabilities, regularly audit your dependencies, use tools like Vulert for monitoring, and only install packages from trusted sources.
