CVE-2025-3143
📋 TL;DR
This critical SQL injection vulnerability in SourceCodester Apartment Visitor Management System 1.0 allows attackers to manipulate database queries through the visitor entry form. Remote attackers can potentially access, modify, or delete sensitive visitor data. All deployments of version 1.0 are affected.
💻 Affected Systems
- SourceCodester Apartment Visitor Management System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, data destruction, or full system takeover via SQL injection to RCE escalation
Likely Case
Unauthorized access to visitor records including personal information, potential privilege escalation within the application
If Mitigated
Limited impact if proper input validation and WAF rules block malicious SQL payloads
🎯 Exploit Status
Public exploit code available on GitHub; remote exploitation requires no authentication
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if available, or implement workarounds.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement parameterized queries and input validation for all user inputs in visitor-entry.php
Modify PHP code to use prepared statements: $stmt = $conn->prepare('INSERT INTO visitors (name, address) VALUES (?, ?)'); $stmt->bind_param('ss', $visname, $address);
Web Application Firewall Rules
allDeploy WAF rules to block SQL injection patterns targeting visitor-entry.php
ModSecurity rule: SecRule ARGS "@detectSQLi" "id:1001,phase:2,deny,status:403,msg:'SQL Injection Attempt'"
Cloudflare WAF: Enable SQLi protection
🧯 If You Can't Patch
- Block external access to /visitor-entry.php via firewall rules or web server configuration
- Implement network segmentation to isolate the vulnerable system from sensitive data
🔍 How to Verify
Check if Vulnerable:
Test /visitor-entry.php with SQL injection payloads like ' OR '1'='1 in visname or address parametersCheck Version:
Check application version in admin panel or readme files; system shows 'Apartment Visitor Management System 1.0'Verify Fix Applied:
Attempt SQL injection after implementing parameterized queries; successful queries should fail with proper error handling📡 Detection & Monitoring
Log Indicators:
- Unusual SQL error messages in PHP logs
- Multiple failed login attempts or SQL syntax errors in visitor-entry.php access logs
Network Indicators:
- HTTP POST requests to /visitor-entry.php containing SQL keywords (UNION, SELECT, INSERT) in parameters
SIEM Query:
source="apache_logs" AND uri_path="/visitor-entry.php" AND (query_string="*UNION*" OR query_string="*SELECT*" OR query_string="*OR '1'='1*")