Critical Malicious Code Vulnerability in kill-port Package
Summary
MAL-2025-191116: Malicious code in kill-port (npm). Affects kill-port versions 2.0.2 – 2.0.3. No fix is published. How to fix ↓
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Background
The kill-port package is a Node.js utility designed to terminate processes that are using specific ports. It is commonly used in development environments to free up ports for applications. However, this package has been compromised, leading to severe security risks for users who have it installed.
Vulnerability Detail
The vulnerability stems from the presence of malicious code embedded within the kill-port package, specifically in versions 2.0.2 and 2.0.3. This malicious code can fully compromise any computer running the package, allowing unauthorized access to sensitive information such as secrets and keys. The origin of this vulnerability is linked to a malicious actor who has inserted harmful code into the package, which can lead to significant security breaches.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall kill-portIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a workaround, users can temporarily use alternative methods to free up ports, such as manually terminating processes using system tools or other trusted packages that do not have known vulnerabilities.
Conclusion
The kill-port package has been compromised with malicious code, posing a significant risk to users. Immediate action is required to remove the package and secure any sensitive information. Users are encouraged to monitor their dependencies for vulnerabilities using tools like Vulert.
See every vulnerability recorded for kill-port →
FAQ
You should immediately remove the kill-port package and rotate any sensitive information stored on your computer.
You can use the Vulert playground at Vulert Scanner to check if your application is affected without needing to sign up.
Failing to address this vulnerability could lead to unauthorized access to your system, data breaches, and potential loss of sensitive information.
Yes, Vulert can monitor and alert you in real-time for open-source vulnerabilities in your software using just your package-lock.json file.
It is advisable to avoid using the kill-port package until a verified and secure version is released.
References
Related vulnerabilities
Recent vulnerabilities recorded for kill-port.
