CVE-2025-2737: Old Age Home Management System SQLi Flaw

CVE-2025-2737 Overview

A critical SQL Injection vulnerability has been identified in PHPGurukul Old Age Home Management System version 1.0. The vulnerability exists in the /admin/contactus.php file, where improper handling of the pagetitle argument allows attackers to inject malicious SQL queries. This flaw can be exploited remotely without authentication, potentially enabling unauthorized access to the underlying database, data manipulation, or complete system compromise.

Critical Impact

Remote attackers can exploit this SQL Injection vulnerability to bypass authentication, extract sensitive information from the database, modify or delete critical data, and potentially achieve full system compromise through database server exploitation.

Affected Products

• PHPGurukul Old Age Home Management System 1.0

Discovery Timeline

• 2025-03-25 - CVE-2025-2737 published to NVD
• 2025-05-06 - Last updated in NVD database

Technical Details for CVE-2025-2737

Vulnerability Analysis

This vulnerability is classified as SQL Injection (CWE-89) with a secondary classification of Injection (CWE-74). The flaw resides in the administrative contact page handler at /admin/contactus.php, where user-supplied input through the pagetitle parameter is incorporated directly into SQL queries without proper sanitization or parameterization. This allows attackers to manipulate database queries by injecting arbitrary SQL syntax through crafted HTTP requests.

The vulnerability is network-accessible, meaning attackers can exploit it remotely without requiring any prior authentication or user interaction. The attack complexity is low, making it relatively straightforward for threat actors to craft exploitation payloads.

Root Cause

The root cause of this vulnerability is the failure to implement proper input validation and parameterized queries (prepared statements) when processing the pagetitle argument. Instead of using secure database access patterns, the application directly concatenates user input into SQL query strings, creating an injection point that attackers can leverage to execute arbitrary SQL commands against the backend database.

Attack Vector

The attack can be initiated remotely via crafted HTTP requests to the /admin/contactus.php endpoint. An attacker would manipulate the pagetitle parameter to include SQL metacharacters and malicious query fragments. Common exploitation techniques include:

• UNION-based injection: Appending UNION SELECT statements to extract data from other database tables
• Boolean-based blind injection: Using conditional SQL statements to infer database contents character by character
• Time-based blind injection: Leveraging database delay functions to extract data through timing analysis
• Stacked queries: Executing additional SQL statements to modify data or escalate privileges

The exploit has been publicly disclosed, increasing the risk of active exploitation attempts against vulnerable installations.

Detection Methods for CVE-2025-2737

Indicators of Compromise

• Unusual HTTP requests to /admin/contactus.php containing SQL metacharacters (single quotes, double dashes, semicolons, UNION keywords)
• Database error messages exposed in application responses indicating SQL syntax errors
• Unexpected database queries or access patterns in database audit logs
• Evidence of data exfiltration or unauthorized database modifications

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block SQL injection patterns in the pagetitle parameter
• Monitor web server access logs for suspicious requests targeting /admin/contactus.php with encoded or obfuscated SQL payloads
• Deploy database activity monitoring to detect anomalous query patterns or unauthorized data access
• Configure intrusion detection systems (IDS) with signatures for common SQL injection attack patterns

Monitoring Recommendations

• Enable detailed logging for the PHPGurukul application and review logs for SQL error messages or injection attempts
• Implement real-time alerting for requests containing SQL injection indicators targeting administrative endpoints
• Monitor database server logs for unusual query execution times or unexpected SELECT statements against sensitive tables

How to Mitigate CVE-2025-2737

Immediate Actions Required

• Restrict access to the /admin/contactus.php endpoint using network-level controls or web server configuration
• Implement a Web Application Firewall (WAF) with SQL injection protection rules
• Review database user permissions and apply principle of least privilege to limit potential damage from successful exploitation
• Consider taking the vulnerable application offline until a patch is available or remediation is complete

Patch Information

At the time of publication, no official patch has been released by PHPGurukul for this vulnerability. Organizations should monitor the PHP Gurukul website and the VulDB advisory for updates regarding security fixes. Additional technical details can be found in the GitHub Issue Tracking report.

Workarounds

• Apply input validation to sanitize the pagetitle parameter, rejecting any input containing SQL metacharacters
• Implement prepared statements (parameterized queries) by modifying the vulnerable PHP code to use PDO or MySQLi with bound parameters
• Deploy a reverse proxy or WAF to filter malicious requests before they reach the application
• Restrict access to administrative functions using IP whitelisting or VPN requirements

# Example: Apache .htaccess rule 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>