Critical Malicious Code Vulnerability in az-css Package
Summary
MAL-2025-15253: Malicious code in az-css (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The az-css package is a Node.js library designed for CSS manipulation and styling. It provides developers with tools to easily manage and apply CSS styles in their applications. However, the package has been identified to contain malicious code, posing significant security risks to users and their applications.
Vulnerability Detail
The az-css package has been found to contain malicious code that can compromise the security of applications using it. This vulnerability originates from the package's codebase, which has been intentionally altered to introduce harmful functionalities. The ramifications of this vulnerability include unauthorized access to sensitive data, potential data breaches, and the ability for attackers to execute arbitrary code within the affected applications.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall az-cssIf 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 az-css package from your project until a secure version is released. You can uninstall the package using the following command: npm uninstall az-css.
Conclusion
The az-css package has been identified as containing malicious code, posing serious security risks to applications that utilize it. Users are advised to uninstall the package and monitor for updates. Utilizing tools like Vulert can help in managing and identifying vulnerabilities in open-source packages effectively.
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FAQ
The az-css package is a Node.js library used for CSS manipulation and styling in web applications.
The az-css package contains malicious code that can lead to security breaches and unauthorized access to sensitive data.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Visit Vulert Scanner to check your application without requiring any signup.
If you are using az-css, it is recommended to uninstall the package immediately and monitor for updates or patches.
Yes, Vulert provides a service that uses package-lock.json to monitor and alert for vulnerabilities in open-source software.
