Critical Malicious Code Vulnerability in fabdeploycheck Package
Summary
MAL-2026-17926: Malicious code in fabdeploycheck (PyPI). Affects fabdeploycheck versions 0.1.1. No fix is published. How to fix ↓
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Background
The fabdeploycheck package, available on PyPI, is designed to assist developers in deploying applications. However, it has been found to contain malicious code that can compromise the security of systems using it. This vulnerability allows attackers to execute arbitrary commands on the host machine, posing a significant risk to users.
Vulnerability Detail
The vulnerability originates from the package's check() function, which spawns a Python child process that fetches a malicious JSON configuration file from an external URL. This process allows the execution of arbitrary commands, file reads, and HTTP calls, all under the control of an attacker. The malicious code can create a reverse shell, enabling unauthorized access to the host system. The vulnerability is exacerbated by the use of unverified SSL contexts, making it susceptible to man-in-the-middle attacks.
How To Fix
This package is malicious. Remove it and rotate any credentials it could have accessed.
pip uninstall fabdeploycheckIf it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.
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Workaround
As a temporary workaround, avoid using the fabdeploycheck package until a secure version is released. Additionally, consider implementing network security measures to block outgoing connections to the malicious URL identified in the vulnerability.
Conclusion
The fabdeploycheck package contains a critical vulnerability that allows for malicious code execution. Users are strongly advised to update their packages and monitor their systems for any signs of compromise. Utilizing tools like Vulert can help in identifying and managing such vulnerabilities effectively.
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FAQ
fabdeploycheck is a Python package designed to assist with application deployment, but it has been compromised with malicious code.
The vulnerability allows attackers to execute arbitrary commands on your system, potentially leading to unauthorized access and data breaches.
Check for updates to the fabdeploycheck package. If a patched version is available, updating the package will mitigate the vulnerability.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time using the Pipfile.lock. Visit https://vulert.com for more information.
If you have used fabdeploycheck, immediately remove it from your project and check your systems for any unauthorized changes or access.
