Malicious Code Injection in Joko-Kupang69-Ruro Package: A Threat to npm Users
Summary
MAL-2025-104608: Malicious code in joko-kupang69-ruro (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The 'joko-kupang69-ruro' package is part of the npm ecosystem, which is widely used for JavaScript package management. This package is associated with the tea.xyz token reward campaign, which has been known to flood the npm registry with malicious packages. The primary function of such packages is to generate and publish derivative packages automatically, often leading to a polluted npm registry and compromised developer reputations.
Vulnerability Detail
The vulnerability in the 'joko-kupang69-ruro' package stems from its malicious code that modifies the package.json file to remove private flags, alters version numbers, and generates random package names. This behavior is designed to inflate developer reputation scores for token rewards while continuously republishing variants to the npm registry. The ramifications include potential exposure of sensitive information, increased risk of dependency confusion, and overall degradation of the npm ecosystem.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall joko-kupang69-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 prevent the installation of the 'joko-kupang69-ruro' package by using the following command: 'npm uninstall joko-kupang69-ruro'. Additionally, you can monitor your project for vulnerabilities using tools like Vulert, which analyzes your package-lock.json file for real-time alerts on open-source vulnerabilities.
Conclusion
The 'joko-kupang69-ruro' package poses a significant threat to npm users due to its malicious code that alters package metadata and floods the npm registry. It is essential to take immediate action by updating or removing the package and utilizing tools like Vulert for ongoing vulnerability monitoring.
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FAQ
The 'joko-kupang69-ruro' package is an npm package associated with a malicious campaign that floods the npm registry with harmful packages.
The vulnerability can lead to the exposure of sensitive information and can compromise the integrity of your project's dependencies.
If you have installed the 'joko-kupang69-ruro' package, it is crucial to uninstall it immediately and check for any other potentially affected packages.
You can use tools like Vulert, which allows you to monitor your package-lock.json file for real-time alerts on open-source vulnerabilities without requiring code access.
Yes, you can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.
