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GHSA-7q25-qrjw-6fg2
No affected components available
Python Auditing Vulnerability
Demonstrates how a malicious package can insert a load-time poison pill to avoid detection by tools like Safety.
Tools that are designed to find vulnerable packages can not ever run in the same python environment that they are trying to protect.
Usage
Install safety, insecure-package, and this package with pip in the same python environment. Order doesn't matter.
- pip install safety
- pip install insecure-package
- pip install dist/malicious-0.1-py3-none-any.whl
Run the check
safety check
You should see both Running my modified safety.check and that insecure-package is not listed in the results!
How it Works
Everything in Python is mutable. The trick is getting some code to run at interpreter load time in order to do some patching.
- When you install this package, the
setup.pysettings installs amalicious.pthfile to yoursite-packagesdirectory. - The
malicious.pthfile gets loaded anytime Python starts, which in turn imports ourmaliciouspackage. - The
malicious/__init__.pypatches the safety library with a custom function to avoid detection.
The vulnerability requires local access to the device to be exploited. It is difficult for an attacker to exploit this vulnerability and may require special conditions. An attacker needs high-level or administrative privileges. The attacker needs the user to perform some action, like clicking a link. The vulnerability can affect other systems as well, not just the initial system. There is a high impact on the integrity of the data.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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