Malicious Code in ultravm (PyPI)

ultravm Updated 02 Oct 2025

Summary

23/02/2023
CRITICAL
No i
Critical
Not published

MAL-2023-7775: Malicious code in ultravm (PyPI). Affected versions are not published. No fix is published. How to fix ↓

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Background

ultravm is a package available on PyPI that provides functionality for virtual machine management. It allows users to create, manage, and control virtual machines. The package is widely used in various applications and environments. However, it has been discovered that a malicious code injection has occurred in the ultravm package.

Vulnerability Detail

The ultravm package has been compromised by the EsqueleSquad group, who published nearly 6000 malicious PyPi and NPM packages. These packages contain spyware and information-stealing malware. The specific vulnerability in ultravm allows the execution of this malicious code, putting users' systems and data at risk. The malicious code can potentially gather sensitive information, compromise system security, and perform unauthorized actions.

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

pip uninstall ultravm

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →

Workaround

As a workaround, you can temporarily disable or block the ultravm package in your application until a secure version or alternative is available. However, this is not a permanent solution and should only be considered as a temporary measure while you work on implementing the recommended fix.

Conclusion

The presence of malicious code in the ultravm package poses a significant risk to the security and integrity of applications utilizing it. It is crucial to take immediate action to remove the package, update dependencies, and implement necessary security measures. For further support and assistance in vulnerability remediation, you can reach out to DevNack.com.

See every vulnerability recorded for ultravm →

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FAQ

This vulnerability can potentially compromise the security of your application by allowing the execution of malicious code. It can lead to unauthorized access, data theft, and other malicious activities.

While specific exploits targeting this vulnerability may exist, the overall risk is high due to the widespread distribution of the malicious packages. It is important to take immediate action to mitigate the impact.

Given the compromise of the ultravm package, it is advisable to exercise caution and thoroughly vet any future versions or alternatives. Regularly monitoring for security updates and relying on trusted sources is crucial to ensure the integrity of your application.

If your application is affected, it is recommended to follow the steps outlined in the 'how_to_fix' section. Additionally, you should assess the potential impact of the compromise and take appropriate actions to secure your system and data.

For more information, you can refer to the original source of the vulnerability report from Checkmarx. They have provided detailed information about the malicious packages and their impact.

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

pip uninstall ultravm

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →

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