CVE-2024-5357: PHPGurukul Zoo Management SQL Injection

CVE-2024-5357 Overview

A critical SQL Injection vulnerability has been identified in PHPGurukul Zoo Management System version 2.1. The vulnerability exists in the /admin/forgot-password.php file, where the email parameter is not properly sanitized before being used in SQL queries. This allows remote attackers to inject malicious SQL statements and potentially compromise the underlying database.

Critical Impact

Remote attackers can exploit this SQL Injection vulnerability without authentication to extract sensitive data, modify database records, or potentially gain unauthorized access to the administrative interface of the Zoo Management System.

Affected Products

• PHPGurukul Zoo Management System 2.1
• Applications using the vulnerable /admin/forgot-password.php component
• Installations with exposed administrative interfaces

Discovery Timeline

• 2024-05-26 - CVE-2024-5357 published to NVD
• 2025-02-21 - Last updated in NVD database

Technical Details for CVE-2024-5357

Vulnerability Analysis

This SQL Injection vulnerability affects the password recovery functionality of the PHPGurukul Zoo Management System. The vulnerable endpoint /admin/forgot-password.php accepts an email parameter that is directly incorporated into SQL queries without proper sanitization or parameterized query implementation. This classic input validation failure enables attackers to craft malicious input that alters the intended SQL query logic.

The vulnerability is particularly concerning because it exists in an unauthenticated endpoint, meaning attackers do not need any prior access to the system to exploit it. The password recovery feature is typically accessible to anyone, making this a prime target for automated scanning tools and opportunistic attackers.

Root Cause

The root cause of this vulnerability is improper input validation and the failure to use parameterized queries or prepared statements when handling user-supplied data. The email parameter is concatenated directly into the SQL query string, allowing attackers to break out of the intended query context and inject arbitrary SQL commands.

This is a common vulnerability pattern in PHP applications where developers use direct string interpolation in database queries rather than leveraging PDO prepared statements or mysqli parameterized queries. The absence of input sanitization functions like mysqli_real_escape_string() or proper whitelist validation compounds the issue.

Attack Vector

The attack can be launched remotely over the network without any authentication requirements. An attacker can submit specially crafted SQL payloads through the email parameter in the forgot password form. The exploitation technique typically involves using UNION-based injection to extract data, boolean-based blind injection to enumerate database contents, or time-based blind injection when direct output is not visible.

Common attack payloads might include attempts to extract admin credentials, enumerate database tables, or bypass authentication mechanisms entirely. Since the exploit has been publicly disclosed, automated tools and scripts may already be scanning for vulnerable installations.

Detection Methods for CVE-2024-5357

Indicators of Compromise

• Unusual or malformed requests to /admin/forgot-password.php containing SQL syntax characters such as single quotes, semicolons, or UNION keywords
• Database error messages appearing in application logs or web responses indicating SQL syntax errors
• Unexpected database queries in query logs, particularly those containing UNION SELECT statements or information_schema references
• Signs of data exfiltration or unauthorized access to administrative accounts

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block common SQL injection patterns in the email parameter
• Monitor web server access logs for requests to /admin/forgot-password.php with suspicious query strings or POST data
• Implement database query logging and alerting for anomalous query patterns or syntax errors
• Use intrusion detection systems (IDS) with signatures for SQL injection attack patterns

Monitoring Recommendations

• Enable detailed logging for all requests to administrative endpoints including /admin/forgot-password.php
• Set up alerts for multiple failed password reset attempts or requests containing special characters
• Monitor database connection logs for unauthorized access patterns or unusual query execution times
• Review application error logs for SQL syntax errors that may indicate exploitation attempts

How to Mitigate CVE-2024-5357

Immediate Actions Required

• Restrict access to the /admin/forgot-password.php endpoint through IP whitelisting or disable it entirely if not required
• Deploy a Web Application Firewall (WAF) with SQL injection protection rules
• Review and audit all database queries in the application for similar input validation issues
• Consider taking the application offline if it contains sensitive data until a proper patch can be applied

Patch Information

As of the last update, no official patch has been released by PHPGurukul for this vulnerability. Organizations using this software should monitor the vendor's official channels for security updates. In the absence of an official patch, implementing the workarounds below is strongly recommended.

For additional technical details, refer to the VulDB Advisory #266269 and the VulDB CTI entry.

Workarounds

• Implement server-side input validation to sanitize the email parameter before processing, allowing only valid email format characters
• Modify the vulnerable code to use prepared statements with parameterized queries instead of string concatenation
• Add rate limiting to the password reset endpoint to slow down automated exploitation attempts
• Place the administrative interface behind a VPN or implement additional authentication layers such as HTTP Basic Auth

# Configuration example - Apache .htaccess to restrict access to admin directory
<Directory /var/www/html/admin>
    # Restrict access to specific IP addresses
    Require ip 192.168.1.0/24
    Require ip 10.0.0.0/8
    
    # Deny all other access
    Require all denied
</Directory>

# Alternative: Block suspicious requests with mod_rewrite
RewriteEngine On
RewriteCond %{QUERY_STRING} (union|select|insert|drop|delete|update|concat|char|hex) [NC]
RewriteRule .* - [F,L]