Malicious Code Injection in 'difficult_wolverine_requirement' Package
Summary
MAL-2025-94024: Malicious code in difficult_wolverine_requirement (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The 'difficult_wolverine_requirement' package is part of the npm ecosystem, which is widely used for JavaScript package management. This package has been identified as part of a token reward campaign that aims to inflate developer reputation scores through the automatic generation and publication of derivative packages. The malicious nature of this package lies in its ability to modify essential files and publish harmful variants, thereby compromising the integrity of the npm registry.
Vulnerability Detail
The vulnerability stems from the package's malicious code that modifies the 'package.json' file by removing private flags and altering version numbers. It generates random package names, often themed around Indonesian culture, and continuously republishes these variants to pollute the npm registry. This behavior not only affects the reputation of developers but also poses a risk to users who may unknowingly install these compromised packages, leading to potential security breaches.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall difficult_wolverine_requirementIf 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 package by avoiding its use in your project dependencies. Additionally, you can use the following command to uninstall it if it is already installed: 'npm uninstall difficult_wolverine_requirement'.
Conclusion
The 'difficult_wolverine_requirement' package poses a significant risk due to its malicious code that alters package files and publishes harmful variants. It is crucial to remove this package from your project and monitor for any updates. Utilizing tools like Vulert can help in identifying vulnerabilities in your applications effectively.
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FAQ
It is an npm package that has been identified as part of a malicious campaign to inflate developer reputation scores through the automatic generation of harmful packages.
The vulnerability can lead to the installation of malicious code, which may compromise your project's security and integrity.
You should uninstall the package immediately and check for any updates or patches that may address the vulnerability.
Yes, you can use tools like Vulert, which monitors and alerts for open-source vulnerabilities in real-time using just your package-lock.json file.
Yes, you can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without requiring any signup.
