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How CVE-2025-31693 Works
The vulnerability exists in Drupal AI module’s improper sanitization of user-supplied input before passing it to system shell commands. Attackers can inject malicious OS commands through crafted HTTP requests containing special characters (like ;, &, |) in AI-related parameters. The module fails to neutralize these elements when processing AI workflow operations, allowing arbitrary command execution with web server privileges. This occurs in all versions before 1.0.5 where the module directly concatenates user input with system() calls without validation.
DailyCVE Form
Platform: Drupal AI
Version: <1.0.5
Vulnerability: Command Injection
Severity: Critical
Date: 04/15/2025
What Undercode Say:
Exploit POC (Educational Purposes)
import requests
target = "http://victim-site.com/drupal-ai/process"
payload = "; cat /etc/passwd "
params = {'ai_input': payload}
response = requests.post(target, data=params)
print(response.text)
Detection Command
grep -r "system(" /path/to/drupal/modules/ai/
// Patch Example
// Before (vulnerable):
system("ai_process " . $_POST['input']);
// After (fixed):
$clean_input = escapeshellarg($_POST['input']);
system("ai_process " . $clean_input);
.htaccess Mitigation
RewriteCond %{QUERY_STRING} [;|&]
RewriteRule ^ - [bash]
Log Analysis Query SELECT FROM watchdog WHERE message LIKE '%system(%' AND timestamp > UNIX_TIMESTAMP(NOW() - INTERVAL 1 DAY);
Upgrade Command drush pm-upgrade ai-1.0.5
Vulnerability Scanner def check_vulnerable(version): return version < '1.0.5'
// Input Validation Example
if (preg_match('/[;&|]/', $input)) {
throw new Exception("Invalid characters detected");
}
System Hardening chmod -R 750 /var/www/html/modules/ai/
WAF Rule
location ~ /drupal-ai/ {
if ($args ~ "[;|&]") { return 403; }
}
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
