CVE-2024-11404

5.5 MEDIUM

📋 TL;DR

This vulnerability in django Filer allows attackers to upload malicious files and execute stored cross-site scripting (XSS) attacks. It affects websites using django Filer versions from 3.0 up to (but not including) 3.3, potentially compromising user data and website integrity.

💻 Affected Systems

Products:
  • django Filer
Versions: 3.0 through 3.2.x (all versions before 3.3)
Operating Systems: All
Default Config Vulnerable: ⚠️ Yes
Notes: Affects django CMS installations using django Filer for file management. Requires django Filer to be enabled and accessible.

⚠️ Manual Verification Required

This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.

Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).

🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.

Recommended Actions:
  1. Review the CVE details at NVD
  2. Check vendor security advisories for your specific version
  3. Test if the vulnerability is exploitable in your environment
  4. Consider updating to the latest version as a precaution

⚠️ Risk & Real-World Impact

🔴

Worst Case

Attackers could upload malicious scripts, execute persistent XSS attacks to steal session cookies, deface websites, or redirect users to malicious sites, potentially leading to full account compromise.

🟠

Likely Case

Attackers upload malicious files containing JavaScript that executes when viewed by other users, allowing session hijacking, data theft, or limited website manipulation.

🟢

If Mitigated

With proper file type validation and content security policies, impact is limited to unsuccessful upload attempts or blocked script execution.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: LIKELY
Unauthenticated Exploit: ✅ No
Complexity: LOW

Exploitation requires file upload access, which typically requires some level of authentication, but could be combined with other vulnerabilities or misconfigurations.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 3.3.0

Vendor Advisory: https://www.django-cms.org/en/blog/2024/11/19/security-updates-for-django-filer-and-django-cms-attributes-field/

Restart Required: Yes

Instructions:

1. Update django-filer package: pip install django-filer==3.3.0
2. Restart your Django application server
3. Verify the update with: pip show django-filer

🔧 Temporary Workarounds

Implement file type validation

all

Add server-side validation to restrict uploaded file types to safe extensions only

# Add to Django settings or file upload handler
ALLOWED_EXTENSIONS = ['jpg', 'png', 'pdf', 'txt']

Enable Content Security Policy

all

Implement CSP headers to prevent execution of inline scripts

# Add to Django middleware or web server config
Content-Security-Policy: script-src 'self'

🧯 If You Can't Patch

  • Disable file upload functionality in django Filer if not essential
  • Implement web application firewall rules to block suspicious file uploads and script tags

🔍 How to Verify

Check if Vulnerable:

Check django-filer version: pip show django-filer | grep Version

Check Version:

pip show django-filer | grep Version

Verify Fix Applied:

Confirm version is 3.3.0 or higher: pip show django-filer | grep Version

📡 Detection & Monitoring

Log Indicators:

  • Unusual file uploads with script extensions (.js, .html)
  • Multiple failed upload attempts with suspicious filenames
  • User agents attempting to upload executable content

Network Indicators:

  • POST requests to file upload endpoints with script content
  • Base64 encoded payloads in upload requests

SIEM Query:

source="web_logs" AND (uri_path="/filer/upload/" OR uri_path="/admin/filer/") AND (file_extension="js" OR file_extension="html" OR file_extension="htm")

🔗 References

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