Malicious Code Exploit in wittering_viper_z3n: NPM Package Vulnerability
Summary
MAL-2025-110977: Malicious code in wittering_viper_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The 'wittering_viper_z3n' package is part of the npm ecosystem and is associated with the tea.xyz token reward campaign. This package is designed to facilitate the automatic generation and publication of derivative packages, which can inflate developer reputation scores for token rewards. However, it has been identified as containing malicious scripts that compromise its integrity and the npm registry.
Vulnerability Detail
The vulnerability stems from the presence of malicious code within the 'wittering_viper_z3n' package. This code modifies the package.json file to remove private flags, alters version numbers, and generates random package names, leading to the continuous republishing of variants that pollute the npm registry. The origin of this issue is linked to the tea.xyz token reward campaign, which exploits npm's publishing mechanisms to manipulate developer reputation.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall wittering_viper_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 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 'wittering_viper_z3n' in its dependencies. You can also utilize Vulert to monitor your application for vulnerabilities without requiring access to the code or installation.
Conclusion
The 'wittering_viper_z3n' package has been identified as containing malicious code that poses a significant risk to developers and the npm ecosystem. It is crucial to remove this package from your projects and utilize tools like Vulert to monitor for vulnerabilities effectively.
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FAQ
The vulnerability can lead to the pollution of the npm registry and compromise the integrity of your project by introducing malicious code.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.
You should uninstall the package immediately using 'npm uninstall wittering_viper_z3n' and monitor your project for any further vulnerabilities.
As of now, there are no patched versions available. It is recommended to remove the package entirely.
Vulert uses the package-lock.json file to monitor and alert in real-time for open-source vulnerabilities in your software, ensuring you stay informed about potential risks.
