Malicious Code Injection in mulyono-sasag95-ruro Package
Summary
MAL-2025-106027: Malicious code in mulyono-sasag95-ruro (npm). Affected versions are not published. No fix is published. How to fix ↓
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Background
The mulyono-sasag95-ruro package is part of the npm ecosystem, which is widely used for JavaScript package management. This package has been identified as part of a malicious campaign that floods the npm registry with derivative packages. These packages are designed to inflate developer reputation scores through automated publishing scripts, which can lead to significant pollution of the npm registry and potential security risks for users.
Vulnerability Detail
The vulnerability originates from the mulyono-sasag95-ruro package, which contains malicious code that modifies the package.json file. This code removes private flags, alters version numbers, and generates random package names, primarily themed around Indonesian culture. The malicious payload continuously republishes these variants to the npm registry, which can lead to a compromised development environment and increased risk of dependency confusion attacks.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
npm uninstall mulyono-sasag95-ruroIf 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 avoid using the mulyono-sasag95-ruro package and any packages that depend on it. Monitor your package-lock.json file for any unexpected changes or additions that may indicate the presence of malicious packages.
Conclusion
The mulyono-sasag95-ruro package poses a significant risk due to its malicious code that alters package metadata and floods the npm registry. It is essential to remove this package from your project and monitor your dependencies for any vulnerabilities. Utilizing tools like Vulert can enhance your security posture by providing real-time alerts for open-source vulnerabilities.
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FAQ
It is an npm package that has been identified as part of a malicious campaign to inflate developer reputation scores through automated publishing.
The vulnerability can lead to the pollution of your project's dependencies, potentially introducing malicious code that can compromise your application.
You should uninstall the package immediately using the command npm uninstall mulyono-sasag95-ruro and review your project for any other affected packages.
You can use tools like Vulert, which monitors your package-lock.json file for open-source vulnerabilities in real-time. You can also check your application against known vulnerabilities using the Vulert playground without any signup.
Yes, tools like Vulert can help monitor and alert you in real-time for open-source vulnerabilities, making it easier to maintain secure dependencies.
