Malicious Code Injection in itchy_bear_z3n Package
Summary
MAL-2025-95125: Malicious code in itchy_bear_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The itchy_bear_z3n package is part of the npm ecosystem, which is widely used for JavaScript development. This package, like many others, is intended to facilitate various functionalities in applications. However, it has been identified as part of a malicious campaign that aims to exploit npm's publishing system, leading to potential security risks for developers and users alike.
Vulnerability Detail
The vulnerability originates from the package being associated with a token reward campaign that floods the npm registry with malicious packages. It contains scripts designed to automatically generate and publish derivative packages with randomized names, which can inflate developer reputation scores. The malicious payload modifies the package.json file to remove private flags, alters version numbers, and continuously republishes variants, polluting the npm registry and potentially leading to the installation of compromised packages by unsuspecting developers.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall itchy_bear_z3nIf 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 itchy_bear_z3n package and look for alternative packages that provide similar functionality without the associated risks. Always verify the integrity and reputation of packages before including them in your project.
Conclusion
The itchy_bear_z3n package poses significant security risks due to its malicious code designed to exploit the npm registry. It is crucial for developers to remove this package and monitor their projects for vulnerabilities to maintain application integrity and security.
See every vulnerability recorded for itchy_bear_z3n →
FAQ
It is an npm package that has been identified as part of a malicious campaign to exploit the npm registry.
The vulnerability can lead to the installation of compromised packages, which may introduce security risks and affect the integrity of your application.
You should uninstall the itchy_bear_z3n package immediately and look for secure alternatives.
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 for vulnerabilities in your application without any signup.
