Listen to this Post
How CVE-2025-3475 Works
The vulnerability in Drupal WEB-T (versions 0.0.0 to 1.1.0) stems from two flaws:
1. Incorrect Authorization: Attackers bypass access controls, allowing content spoofing by manipulating unvalidated user inputs.
2. Resource Allocation Without Limits: Excessive memory/CPU consumption occurs when processing malformed requests, enabling DoS attacks. Attackers exploit weak session validation and unrestricted file uploads, overwhelming server resources.
DailyCVE Form:
Platform: Drupal WEB-T
Version: 0.0.0 – 1.1.0
Vulnerability: Auth Bypass + DoS
Severity: Critical
Date: 06/02/2025
Prediction: Patch by 08/2025
What Undercode Say:
Exploit Analysis:
Craft malicious payload for resource exhaustion curl -X POST http://target/drupal-web-t/upload -H "Cookie: invalid_session=1" -d "@large_file.bin"
Protection Commands:
Mitigate via .htaccess (Apache) LimitRequestBody 102400 Deny from all <FilesMatch "\.(php|inc)$"> Require valid-user </FilesMatch>
Code Fix (PHP):
// Validate sessions strictly
if (!isset($_SESSION['valid']) || $_SESSION['valid'] !== true) {
header("HTTP/1.1 403 Forbidden");
exit;
}
// Enforce upload limits
ini_set('upload_max_filesize', '10M');
ini_set('post_max_size', '12M');
Analytics:
- Attack Vector: Network-based, low complexity.
- Exploitability: High (no privileges required).
- Affected Systems: All WEB-T instances with default config.
Detection Script (Python):
import requests
response = requests.get("http://target/drupal-web-t/status")
if "WEB-T/1.0" in response.text:
print("Vulnerable instance detected.")
Patch Verification:
Post-patch check grep -r "session_validate" /var/www/drupal/modules/web-t/
Log Monitoring (Linux):
tail -f /var/log/apache2/access.log | grep -E "POST.upload"
Rate Limiting (Nginx):
location /drupal-web-t/ {
limit_req zone=one burst=10;
}
References:
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
