Malicious Code Injection in selected_opossum_z3n Package
Summary
MAL-2025-96497: Malicious code in selected_opossum_z3n (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The selected_opossum_z3n package is part of the npm ecosystem and has been identified as part of a token reward campaign associated with tea.xyz. This package is designed to facilitate the automatic generation and publishing of derivative packages, which can inflate developer reputation scores in exchange for token rewards. However, it has been compromised to include malicious scripts that can alter package configurations and publish unwanted variants.
Vulnerability Detail
The vulnerability stems from the presence of malicious code within the selected_opossum_z3n package. This code modifies the package.json file to remove private flags, alters version numbers, and generates random package names, which can lead to pollution of the npm registry. The malicious payload is designed to continuously republish these variants, potentially harming the integrity of the npm ecosystem and affecting developers' ability to manage their packages effectively.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall selected_opossum_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 remove the selected_opossum_z3n package from your project by executing the command: npm uninstall selected_opossum_z3n. This will prevent any malicious code from executing until a secure version is available.
Conclusion
The selected_opossum_z3n package has been identified as containing malicious code that can compromise the integrity of your npm projects. It is crucial to take immediate action by updating or uninstalling the package to safeguard your application. Utilize tools like Vulert for ongoing monitoring of vulnerabilities in your dependencies.
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FAQ
The selected_opossum_z3n package is an npm package that is part of a token reward campaign, designed to automate the generation and publishing of derivative packages.
The malicious code can alter your package.json file, remove private flags, and publish unwanted package variants, which can compromise the integrity of your project and the npm registry.
Yes, you can use Vulert, a tool that monitors and alerts for open-source vulnerabilities in real-time. You can check if your application is affected by visiting the Vulert playground at Vulert Scanner.
If you cannot update the package right away, it is advisable to uninstall the selected_opossum_z3n package to prevent any potential exploitation of the vulnerability.
To prevent similar vulnerabilities, regularly update your dependencies, monitor for security advisories, and utilize tools like Vulert to keep track of vulnerabilities in your open-source packages.
