Malicious Code Injection in mahnud-nofty-mutafau: A Threat to npm Packages
Summary
MAL-2025-159112: Malicious code in mahnud-nofty-mutafau (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The package 'mahnud-nofty-mutafau' is part of a series of npm packages that emerged during the tea.xyz token reward campaign. These packages are designed to inflate developer reputation scores by automatically generating and publishing derivative packages with randomized names. The malicious nature of this package lies in its ability to modify critical files and republish variants, thereby polluting the npm registry.
Vulnerability Detail
The vulnerability in 'mahnud-nofty-mutafau' originates from its inclusion in a malicious campaign aimed at manipulating npm's package registry. The package contains scripts that alter the package.json file by removing private flags and changing version numbers. It generates random package names, often themed around Indonesian culture, and continuously republishes these variants. This behavior not only compromises the integrity of the npm registry but also poses risks to developers who may unknowingly use these tainted packages.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall mahnud-nofty-mutafauIf 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 this malicious package by using npm's package-lock.json file to monitor dependencies. Ensure that your project does not include 'mahnud-nofty-mutafau' in its dependencies. You can also use tools like Vulert to monitor your project for vulnerabilities without needing to install any software.
Conclusion
The 'mahnud-nofty-mutafau' package represents a significant threat to the npm ecosystem due to its malicious behavior aimed at manipulating the package registry. It is crucial for developers to remain vigilant, regularly update their dependencies, and utilize monitoring tools to safeguard their projects from such vulnerabilities.
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FAQ
'mahnud-nofty-mutafau' is an npm package that is part of a malicious campaign to inflate developer reputation scores by flooding the npm registry with derivative packages.
This vulnerability can compromise the integrity of your project by introducing malicious code that modifies your package.json and republishing harmful variants.
You should uninstall 'mahnud-nofty-mutafau' immediately and check for any other malicious packages that may have been installed as part of the same campaign.
You can use tools like Vulert, which allows you to monitor your package-lock.json for vulnerabilities in real-time without requiring installation.
Regularly update your packages, monitor dependencies, and utilize tools like Vulert to receive alerts for any open-source vulnerabilities.
