Critical Malicious Code Vulnerability in ethers-util.js Package
Summary
MAL-2025-19893: Malicious code in ethers-util.js (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The ethers-util.js package is a JavaScript library designed for Ethereum-related utilities, providing developers with tools to interact with the Ethereum blockchain. It is commonly used in decentralized applications (dApps) for tasks such as wallet management, transaction handling, and smart contract interaction. However, the package has been identified to contain malicious code, posing significant risks to applications that rely on it.
Vulnerability Detail
The vulnerability in ethers-util.js arises from the inclusion of malicious code that can compromise the security of applications utilizing this package. This code can lead to unauthorized access, data theft, or manipulation of transactions, potentially resulting in financial loss or exposure of sensitive user information. The issue was introduced in version 0 and affects all subsequent versions.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall ethers-util.jsIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a temporary workaround, consider removing the ethers-util.js package from your project until a secure version is available. You can do this by executing: npm uninstall ethers-util.js. Alternatively, you may explore other libraries that provide similar functionality without the associated risks.
Conclusion
The ethers-util.js package has been identified to contain malicious code that poses significant security risks to applications. It is crucial for developers to update to a patched version or remove the package until a fix is available. Utilizing tools like Vulert can help in monitoring vulnerabilities effectively.
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FAQ
The malicious code can lead to unauthorized access and manipulation of user data and transactions.
You can use Vulert, which monitors open-source vulnerabilities in real-time. Visit Vulert Scanner to check your application without needing to sign up.
Consider removing the package or using alternative libraries until a secure version is released.
Currently, all versions from 0 onwards are affected. It is advisable to wait for an official patch before using the package.
Vulert uses the package-lock.json file to monitor and alert in real-time for open-source vulnerabilities, ensuring your application remains secure.
