CVE-2025-7521: PHPGurukul Parking System SQLi Vulnerability

CVE-2025-7521 Overview

A critical SQL injection vulnerability has been identified in PHPGurukul Vehicle Parking Management System version 1.13. The vulnerability exists in the /admin/index.php file, where the Username parameter is susceptible to SQL injection attacks due to improper input sanitization. This flaw allows remote attackers to manipulate SQL queries, potentially leading to unauthorized data access, modification, or deletion.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to bypass authentication, extract sensitive database information, or compromise the entire vehicle parking management system without requiring any authentication.

Affected Products

• PHPGurukul Vehicle Parking Management System 1.13
• Applications using the vulnerable /admin/index.php authentication endpoint
• Systems exposing the admin panel to network access

Discovery Timeline

• 2025-07-13 - CVE-2025-7521 published to NVD
• 2025-09-26 - Last updated in NVD database

Technical Details for CVE-2025-7521

Vulnerability Analysis

This SQL injection vulnerability occurs in the administrative login functionality of the Vehicle Parking Management System. The /admin/index.php file processes user-supplied input through the Username parameter without proper sanitization or parameterized queries. When users submit login credentials, the application directly concatenates the username value into SQL queries, creating an injection point that attackers can exploit.

The vulnerability is classified under CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component), which encompasses injection flaws where user input is not properly validated before being processed by an interpreter.

Root Cause

The root cause of this vulnerability is the lack of proper input validation and the use of dynamic SQL query construction. The application fails to implement parameterized queries or prepared statements when handling the Username parameter in the authentication process. This allows specially crafted input containing SQL syntax to be interpreted as part of the query structure rather than as literal data values.

Attack Vector

The attack can be launched remotely over the network without requiring prior authentication. An attacker can access the admin login page at /admin/index.php and inject malicious SQL code through the Username field. Common exploitation techniques include:

The vulnerability allows attackers to inject SQL statements through the Username parameter in the login form. By submitting specially crafted input containing SQL syntax such as single quotes, boolean conditions, or UNION statements, an attacker can manipulate the underlying database query. This can result in authentication bypass by forcing the query to return true, extraction of sensitive data through UNION-based injection, or enumeration of database structure and contents.

For additional technical details, refer to the GitHub Issue Discussion and VulDB entry #316218.

Detection Methods for CVE-2025-7521

Indicators of Compromise

• Unusual or malformed requests to /admin/index.php containing SQL keywords such as UNION, SELECT, OR, or single quotes in the Username parameter
• Multiple failed login attempts with SQL injection patterns from the same IP address
• Database error messages appearing in web server logs indicating SQL syntax errors
• Unexpected database queries or data exfiltration activity in database audit logs

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block SQL injection patterns in POST parameters targeting /admin/index.php
• Configure intrusion detection systems to alert on requests containing common SQL injection signatures
• Monitor authentication logs for unusual patterns or successful logins without valid credentials
• Deploy application-level logging to capture and analyze all input submitted to login endpoints

Monitoring Recommendations

• Enable detailed logging for the /admin/index.php endpoint and review logs regularly for suspicious activity
• Set up alerts for database errors that may indicate SQL injection attempts
• Monitor network traffic for unusual data volumes being transmitted from the database server
• Implement real-time security monitoring with SentinelOne to detect and respond to exploitation attempts

How to Mitigate CVE-2025-7521

Immediate Actions Required

• Restrict network access to the /admin/index.php endpoint using firewall rules or IP whitelisting
• Implement a Web Application Firewall (WAF) with SQL injection protection rules as a temporary mitigation
• Review and audit all authentication logs for signs of compromise or exploitation attempts
• Consider taking the admin panel offline until a proper fix can be implemented

Patch Information

As of the last update on 2025-09-26, no official patch from PHPGurukul has been documented in the available references. Organizations should monitor the PHPGurukul website for security updates or newer versions that address this vulnerability. In the absence of an official patch, implementing the workarounds below is strongly recommended.

Workarounds

• Implement input validation at the application level by modifying the code to use prepared statements with parameterized queries
• Deploy a reverse proxy or WAF such as ModSecurity with OWASP Core Rule Set to filter malicious requests
• Restrict access to the admin panel to trusted IP addresses only using network-level access controls
• Consider replacing the vulnerable authentication mechanism with a secure alternative implementation

# Example: Apache .htaccess to restrict admin access by IP
<Files "index.php">
    <RequireAny>
        Require ip 192.168.1.0/24
        Require ip 10.0.0.0/8
    </RequireAny>
</Files>