Malicious Code Injection in artificial_cow_z3n Package
Summary
MAL-2025-99613: Malicious code in artificial_cow_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The artificial_cow_z3n package is part of the npm ecosystem, typically used for various JavaScript functionalities. However, it has been identified as part of a malicious campaign that aims to exploit npm's package publishing system. This package is associated with the tea.xyz token reward initiative, which has been known to flood the npm registry with derivative packages that are generated automatically.
Vulnerability Detail
The vulnerability in the artificial_cow_z3n package stems from its malicious payload, which 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, leading to pollution of the npm registry with numerous derivative packages. The origin of this vulnerability is linked to the tea.xyz token reward campaign, which employs autopublish scripts to automate the creation and publishing of these malicious packages.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall artificial_cow_z3nIf 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 artificial_cow_z3n package by adding it to your project's .npmrc file with the following line: 'package-lock=false'. This will help avoid any unintended installations of this malicious package.
Conclusion
The artificial_cow_z3n package poses a significant risk due to its malicious behavior aimed at exploiting the npm registry. It is crucial for developers to be vigilant, remove this package, and monitor their projects for any vulnerabilities to maintain security.
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FAQ
The artificial_cow_z3n package is an npm package that has been identified as part of a malicious campaign to exploit the npm registry.
This vulnerability can lead to the pollution of your project's dependencies with malicious packages, potentially compromising security and functionality.
If you have installed the artificial_cow_z3n package, you should uninstall it immediately using 'npm uninstall artificial_cow_z3n'.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software using just the package-lock.json file. You can check your application for vulnerabilities using the Vulert playground at Vulert Scanner.
To prevent similar vulnerabilities, regularly audit your dependencies, keep your packages updated, and use tools like Vulert to monitor for vulnerabilities.
