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How the CVE Works:
The vulnerability in Python Requests (prior to v2.32.4) stems from improper URL parsing when handling maliciously crafted URLs. When a request is made to a specially formatted URL, the library incorrectly processes `.netrc` credentials, potentially exposing them to unintended third-party servers. The issue arises due to flawed hostname validation, allowing attackers to redirect authentication tokens via manipulated redirects or malformed host segments. This affects applications relying on `.netrc` for automated authentication.
DailyCVE Form:
Platform: Python Requests
Version: < 2.32.4
Vulnerability: Credential leak
Severity: Moderate
Date: Jun 9, 2025
Prediction: Patch expected by Jun 20, 2025
What Undercode Say:
Exploitation:
1. Craft malicious URL:
malicious_url = "http://[email protected]/path"
2. Trigger `.netrc` leak:
import requests response = requests.get(malicious_url) Leaks credentials
Mitigation:
1. Disable `.netrc`:
session = requests.Session() session.trust_env = False Blocks .netrc usage
2. Update Requests:
pip install --upgrade requests>=2.32.4
Detection:
1. Scan for vulnerable versions:
pip list | grep requests
2. Audit `.netrc` usage:
grep -r "trust_env" /codebase/
Analytics:
- Affected Systems: CI/CD pipelines, scripts using
.netrc. - Exploit Complexity: Low (requires user interaction/redirect).
- Patch Priority: High for exposed automation tools.
Temporary Workaround:
import os
os.environ.pop('NETRC', None) Unset .netrc pre-request
References:
Sources:
Reported By: github.com
Extra Source Hub:
Undercode
