CVE-2025-7543
📋 TL;DR
This critical SQL injection vulnerability in PHPGurukul User Registration & Login and User Management System 3.3 allows remote attackers to manipulate database queries through the ID parameter in /admin/manage-users.php. Attackers can potentially read, modify, or delete sensitive user data. Organizations using this specific version of the PHPGurukul system are affected.
💻 Affected Systems
- PHPGurukul User Registration & Login and User Management System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, user account takeover, privilege escalation, and potential system control through subsequent attacks.
Likely Case
Unauthorized access to sensitive user information, credential theft, and potential privilege escalation within the application.
If Mitigated
Limited impact with proper input validation and database permissions, potentially only error messages or minimal data exposure.
🎯 Exploit Status
Exploit requires admin access to reach /admin/manage-users.php endpoint. SQL injection is well-understood and easily weaponized.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://phpgurukul.com/
Restart Required: No
Instructions:
Check vendor website for security updates. If no patch available, implement workarounds immediately.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement strict input validation and parameterized queries for the ID parameter in manage-users.php
Modify PHP code to use prepared statements: $stmt = $conn->prepare('SELECT * FROM users WHERE id = ?'); $stmt->bind_param('i', $id);
Web Application Firewall Rules
allDeploy WAF rules to block SQL injection patterns targeting the /admin/manage-users.php endpoint
Add WAF rule: Block requests to /admin/manage-users.php containing SQL keywords in ID parameter
🧯 If You Can't Patch
- Restrict access to /admin/ directory to specific IP addresses only
- Implement database user with minimal permissions (read-only where possible)
🔍 How to Verify
Check if Vulnerable:
Test the ID parameter in /admin/manage-users.php with SQL injection payloads like ' OR '1'='1Check Version:
Check PHPGurukul system version in admin panel or configuration filesVerify Fix Applied:
Test with same payloads after implementing parameterized queries - should return error or no data📡 Detection & Monitoring
Log Indicators:
- Unusual SQL errors in application logs
- Multiple failed login attempts followed by admin access
- Suspicious queries in database logs
Network Indicators:
- HTTP requests to /admin/manage-users.php with SQL keywords in parameters
- Unusual database connection patterns from web server
SIEM Query:
source="web_logs" AND uri="/admin/manage-users.php" AND (param="id" AND value MATCHES "(?i)(union|select|insert|delete|update|drop|--|#|/*)")