Malicious Code Injection in zain-jus18-breki: A Threat to npm Ecosystem
Summary
MAL-2025-76504: Malicious code in zain-jus18-breki (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The package zain-jus18-breki is part of the npm ecosystem, which is widely used for JavaScript package management. This package, like others in the npm registry, is intended to facilitate the development and sharing of reusable code. However, it has been identified as part of a malicious campaign that exploits the npm registry by generating and publishing numerous derivative packages with altered metadata, thereby compromising the integrity of the ecosystem.
Vulnerability Detail
The vulnerability in zain-jus18-breki originates from its association with the tea.xyz token reward campaign. This package contains scripts designed to automatically publish derivative packages with randomized names, which can inflate developer reputation scores fraudulently. The malicious payload modifies the package.json file to remove private flags, alters version numbers, and continuously republishes variants, leading to pollution of the npm registry and potential security risks for developers using these packages.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall zain-jus18-brekiIf 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 avoid using the zain-jus18-breki package and monitor your project's dependencies for any similar malicious packages. Regularly audit your npm packages using the command 'npm audit' to identify vulnerabilities.
Conclusion
The zain-jus18-breki package poses a significant threat to the npm ecosystem due to its malicious code designed to exploit the registry. It is crucial for developers to remain vigilant, regularly audit their dependencies, and utilize tools like Vulert to monitor for vulnerabilities.
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FAQ
zain-jus18-breki is an npm package that has been identified as part of a malicious campaign to exploit the npm registry by publishing numerous derivative packages.
The vulnerability can lead to the pollution of the npm registry, potentially compromising the security and integrity of your project by introducing malicious code.
If you have installed zain-jus18-breki, you should uninstall it immediately using 'npm uninstall zain-jus18-breki' and audit your project for any other vulnerabilities.
To prevent similar vulnerabilities, regularly update your dependencies, use trusted packages, and conduct audits of your npm packages.
You can use tools like Vulert, which monitors and alerts for open-source vulnerabilities in real-time using your package-lock.json file. You can check if your application is affected by visiting the Vulert playground.
