CVE-2025-4031: Pre-school Enrollment System SQLi Flaw

CVE-2025-4031 Overview

A critical SQL injection vulnerability has been discovered in PHPGurukul Pre-School Enrollment System version 1.0. The vulnerability exists in the /admin/aboutus.php file, where improper handling of the pagetitle argument allows attackers to inject malicious SQL commands. This flaw enables remote attackers to manipulate database queries without authentication, potentially compromising the entire application database containing sensitive enrollment and administrative data.

Critical Impact

Unauthenticated attackers can remotely exploit this SQL injection vulnerability to extract, modify, or delete sensitive pre-school enrollment data, including student and parent information.

Affected Products

• PHPGurukul Pre-School Enrollment System 1.0
• Web applications using the vulnerable /admin/aboutus.php endpoint

Discovery Timeline

• 2025-04-28 - CVE-2025-4031 published to NVD
• 2025-05-10 - Last updated in NVD database

Technical Details for CVE-2025-4031

Vulnerability Analysis

This SQL injection vulnerability (CWE-89) stems from the application's failure to properly sanitize user-supplied input in the pagetitle parameter within the /admin/aboutus.php file. When an attacker submits a crafted request containing SQL metacharacters, the application directly incorporates this untrusted input into database queries without adequate validation or parameterization.

The vulnerability is classified under both CWE-89 (SQL Injection) and CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component), indicating a fundamental input validation failure. Since the exploit has been publicly disclosed, systems running this application face increased risk of compromise.

Root Cause

The root cause of CVE-2025-4031 is the lack of proper input sanitization and parameterized queries in the aboutus.php administrative page. The pagetitle argument is directly concatenated into SQL statements without escaping special characters or using prepared statements with bound parameters. This classic injection pattern allows attackers to break out of the intended query context and execute arbitrary SQL commands.

Attack Vector

The attack can be initiated remotely over the network without requiring any prior authentication or user interaction. An attacker can craft malicious HTTP requests targeting the /admin/aboutus.php endpoint with SQL injection payloads in the pagetitle parameter. This could enable:

• Data Exfiltration: Extracting sensitive student enrollment records, parent contact information, and administrative credentials
• Data Manipulation: Modifying or deleting enrollment records and system configurations
• Authentication Bypass: Potentially bypassing login mechanisms to gain administrative access
• Secondary Attacks: Using database-level functions to read/write files on the server or pivot to other attacks

The vulnerability requires no special privileges or user interaction, making exploitation straightforward for remote attackers. Technical details and exploitation information have been documented in the GitHub Issue Tracker and VulDB #306394.

Detection Methods for CVE-2025-4031

Indicators of Compromise

• Unusual or malformed HTTP requests to /admin/aboutus.php containing SQL syntax characters such as single quotes, semicolons, or UNION statements
• Database error messages appearing in application logs or responses indicating query manipulation
• Unexpected database queries or modifications to the aboutus related tables
• Signs of data extraction through error-based, time-based, or UNION-based injection techniques

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block SQL injection patterns in requests to /admin/aboutus.php
• Enable verbose logging on the web server and database to capture suspicious query patterns and injection attempts
• Implement application-level input validation monitoring to flag requests with SQL metacharacters in the pagetitle parameter
• Use database activity monitoring tools to detect anomalous query patterns or unauthorized data access

Monitoring Recommendations

• Regularly review web server access logs for requests targeting /admin/aboutus.php with unusual parameter values
• Configure alerting for database errors or exceptions that may indicate injection attempts
• Monitor for bulk data extraction patterns or unusual database read operations
• Implement real-time security monitoring with SentinelOne Singularity to detect post-exploitation activities

How to Mitigate CVE-2025-4031

Immediate Actions Required

• Restrict access to the /admin/aboutus.php endpoint using network-level controls or IP whitelisting until a patch is applied
• Implement WAF rules to block SQL injection patterns in requests to the vulnerable endpoint
• Audit database logs for signs of prior exploitation and check for unauthorized data access
• Consider taking the application offline if it contains sensitive data and no immediate patch is available

Patch Information

At the time of publication, no official vendor patch has been identified for CVE-2025-4031. Administrators should monitor PHPGurukul's official website for security updates. Organizations should prioritize applying any vendor-released patches immediately upon availability.

Workarounds

• Implement input validation at the application level to reject requests containing SQL metacharacters in the pagetitle parameter
• Deploy a Web Application Firewall (WAF) with SQL injection detection rules enabled
• Modify the source code to use parameterized queries (prepared statements) with bound parameters for all database interactions
• Restrict network access to the administrative interface to trusted IP addresses only
• Consider implementing database user permissions following the principle of least privilege to limit potential damage from successful injection attacks

# Example: Apache .htaccess to restrict admin access by IP
<Directory "/path/to/admin">
    Require ip 192.168.1.0/24
    Require ip 10.0.0.0/8
</Directory>