Malicious Code Detected in aioutil3 Package - Potential Data Exfiltration Risk
Summary
MAL-2026-1289: Malicious code in aioutil3 (PyPI). Affects aioutil3 versions 3.9.1. No fix is published. How to fix ↓
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Background
The aioutil3 package is a Python library available on PyPI, designed to provide utility functions for various tasks. However, a malicious clone of this package has been identified, which introduces harmful code that can exfiltrate sensitive data from users' systems. This vulnerability poses a significant risk to users who may unknowingly install the compromised version.
Vulnerability Detail
The vulnerability originates from a malicious clone of the legitimate python-utils package. The modified code includes a function that silently exfiltrates sensitive data, such as IP addresses and usernames, to a hardcoded remote location. During analysis, it was noted that the remote domain did not exist, indicating that the malicious code might not have been fully activated yet, suggesting preparation for future attacks. This vulnerability is categorized as malicious due to its intent to steal information.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
pip uninstall aioutil3If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a temporary workaround, users can avoid using the aioutil3 package until the issue is resolved. If the package is already installed, it is advisable to remove it using the command: pip uninstall aioutil3.
Conclusion
The aioutil3 package has been compromised with malicious code that poses a risk of data exfiltration. Users are advised to uninstall the package and ensure they are using legitimate versions. Monitoring tools like Vulert can help keep track of vulnerabilities in open-source software.
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FAQ
aioutil3 is a Python library designed to provide utility functions for various tasks. However, a malicious version has been identified that poses security risks.
Check the package version and source. If it was installed from an unverified source or if the version is 3.9.1 from kam193, it is likely compromised.
The malicious code is designed to exfiltrate basic data from the system, such as IP addresses and usernames.
Yes, you can use Vulert, which monitors and alerts in real-time for open-source vulnerabilities in your software. You can check your application for vulnerabilities using the Vulert playground without any signup.
Uninstall the aioutil3 package immediately using the command pip uninstall aioutil3 and replace it with a legitimate version from a trusted source.
