CVE-2025-4766: Zoo Management System SQL Injection Flaw

CVE-2025-4766 Overview

A critical SQL Injection vulnerability has been discovered in PHPGurukul Zoo Management System version 2.1. The vulnerability exists in the /admin/profile.php file where the contactnumber parameter is improperly sanitized before being used in SQL queries. This allows remote attackers to inject malicious SQL statements, potentially leading to unauthorized data access, data manipulation, or complete database compromise.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to bypass authentication, extract sensitive data from the database, modify or delete records, and potentially gain administrative access to the Zoo Management System.

Affected Products

• PHPGurukul Zoo Management System 2.1
• phpgurukul zoo_management_system

Discovery Timeline

• 2025-05-16 - CVE-2025-4766 published to NVD
• 2025-05-27 - Last updated in NVD database

Technical Details for CVE-2025-4766

Vulnerability Analysis

This vulnerability is classified under CWE-89 (SQL Injection) and CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component). The vulnerable endpoint /admin/profile.php accepts user-controlled input through the contactnumber parameter without proper validation or sanitization. When this input is directly concatenated into SQL queries, it creates an injection point that attackers can exploit to execute arbitrary SQL commands against the underlying database.

The vulnerability is exploitable remotely over the network without requiring authentication, making it particularly dangerous for publicly accessible installations of the Zoo Management System. Successful exploitation could allow attackers to extract sensitive information stored in the database, including user credentials, administrative data, and other confidential records managed by the system.

Root Cause

The root cause of this vulnerability is the lack of proper input validation and parameterized queries in the profile management functionality. The contactnumber parameter is directly incorporated into SQL statements without sanitization, escaping, or the use of prepared statements. This classic SQL injection pattern allows attackers to break out of the intended query structure and inject their own SQL commands.

Attack Vector

The attack can be launched remotely over the network by sending specially crafted HTTP requests to the vulnerable /admin/profile.php endpoint. An attacker would manipulate the contactnumber parameter to include SQL metacharacters and malicious SQL syntax. The injected payload would then be executed by the database server with the same privileges as the application's database user.

Exploitation typically involves techniques such as UNION-based injection to extract data from other tables, boolean-based blind injection to infer database contents, or time-based blind injection when direct output is not visible. The exploit details have been publicly disclosed, increasing the risk of active exploitation in the wild.

Detection Methods for CVE-2025-4766

Indicators of Compromise

• Unusual HTTP requests to /admin/profile.php containing SQL metacharacters (single quotes, double dashes, UNION keywords) in the contactnumber parameter
• Database error messages in application logs indicating malformed SQL queries
• Unexpected database queries or access patterns originating from the web application
• Evidence of data exfiltration or unauthorized database modifications

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block SQL injection patterns in HTTP parameters
• Monitor application and database logs for suspicious query patterns or SQL error messages
• Deploy intrusion detection systems (IDS) with signatures for SQL injection attack patterns
• Review access logs for requests to /admin/profile.php with anomalous parameter values

Monitoring Recommendations

• Enable detailed logging for the /admin/profile.php endpoint and monitor for injection attempts
• Set up alerts for database errors related to syntax issues or unexpected query structures
• Monitor database activity for unusual SELECT statements, especially those accessing sensitive tables
• Implement real-time monitoring of web traffic patterns to detect automated exploitation attempts

How to Mitigate CVE-2025-4766

Immediate Actions Required

• Restrict access to the /admin/profile.php endpoint to trusted IP addresses only
• Implement input validation on the contactnumber parameter to accept only numeric values
• Deploy a Web Application Firewall (WAF) with SQL injection protection rules
• Review and audit database user privileges to minimize the impact of potential exploitation
• Consider temporarily disabling the affected functionality until a patch is applied

Patch Information

As of the last NVD update on 2025-05-27, no official patch has been released by PHPGurukul. Organizations using Zoo Management System 2.1 should monitor the PHP Gurukul Homepage for security updates and apply patches as soon as they become available. Additional technical details can be found in the GitHub Issue Tracker Entry and VulDB #309067.

Workarounds

• Modify the application code to use prepared statements (PDO or mysqli with parameterized queries) for all database operations involving user input
• Add server-side input validation to ensure the contactnumber parameter contains only expected characters (digits, dashes, or plus signs)
• Implement application-level escaping using functions like mysqli_real_escape_string() as a temporary measure
• Consider deploying the application behind a reverse proxy with SQL injection filtering capabilities

# Example: Restrict access to admin profile via .htaccess
<Files "profile.php">
    Order Deny,Allow
    Deny from all
    Allow from 192.168.1.0/24
    # Replace with your trusted IP range
</Files>