CVE-2025-4463: Gym Management System SQL Injection Flaw

CVE-2025-4463 Overview

A SQL injection vulnerability has been discovered in itsourcecode Gym Management System version 1.0. The vulnerability exists in the /ajax.php?action=save_package endpoint, where improper handling of the ID parameter allows attackers to inject malicious SQL statements. This flaw enables remote attackers to manipulate database queries without authentication, potentially leading to unauthorized data access, modification, or deletion.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to bypass authentication, extract sensitive data from the database, modify records, or potentially gain further access to the underlying system through database-level attacks.

Affected Products

• Admerc Gym Management System 1.0
• itsourcecode Gym Management System 1.0

Discovery Timeline

• 2025-05-09 - CVE-2025-4463 published to NVD
• 2025-12-22 - Last updated in NVD database

Technical Details for CVE-2025-4463

Vulnerability Analysis

This vulnerability is classified as SQL Injection (CWE-74), which occurs when user-supplied input is incorporated into SQL queries without proper sanitization or parameterization. In the case of Gym Management System 1.0, the ID parameter passed to the /ajax.php?action=save_package endpoint is directly concatenated into database queries, allowing attackers to break out of the intended query structure and execute arbitrary SQL commands.

The vulnerability can be exploited remotely over the network without requiring any user interaction or prior authentication. An attacker can craft malicious HTTP requests containing SQL injection payloads in the ID parameter to manipulate backend database operations. This could result in unauthorized access to sensitive gym member data, financial records, or administrative credentials stored in the database.

Root Cause

The root cause of this vulnerability is improper input validation and the lack of parameterized queries (prepared statements) when processing the ID parameter in the save_package action handler. The application directly interpolates user input into SQL query strings, creating an injection point that attackers can exploit to alter the query's logic and behavior.

Attack Vector

The attack is network-based and requires no authentication or user interaction. An attacker can send specially crafted HTTP requests to the vulnerable endpoint /ajax.php?action=save_package with malicious SQL payloads in the ID parameter. The application processes these requests and executes the injected SQL commands directly against the database.

The vulnerability manifests in the AJAX handler for package saving functionality. When the ID parameter is submitted, it is incorporated into SQL queries without sanitization, allowing attackers to inject malicious SQL syntax. Typical exploitation techniques include UNION-based injection to extract data, boolean-based blind injection to enumerate database contents, or time-based blind injection when direct output is not available. For technical details, see the GitHub Issue CVE Discussion and VulDB entry.

Detection Methods for CVE-2025-4463

Indicators of Compromise

• HTTP requests to /ajax.php?action=save_package containing SQL keywords such as UNION, SELECT, DROP, or -- in the ID parameter
• Unusual database query patterns or errors in application logs
• Unexpected database access or data exfiltration activities
• Web server logs showing repeated requests to the vulnerable endpoint with varying payloads

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block common SQL injection patterns in the ID parameter
• Monitor HTTP access logs for requests to /ajax.php?action=save_package with suspicious characters or SQL syntax
• Deploy database activity monitoring to detect anomalous query patterns or unauthorized data access
• Use SentinelOne Singularity to detect post-exploitation activities following successful SQL injection attacks

Monitoring Recommendations

• Enable detailed logging for the Gym Management System application and database server
• Configure alerts for SQL error messages in application logs that may indicate injection attempts
• Monitor network traffic for data exfiltration patterns from the database server
• Implement file integrity monitoring on web application directories to detect potential webshell uploads following database compromise

How to Mitigate CVE-2025-4463

Immediate Actions Required

• Restrict access to the Gym Management System to trusted networks only until a patch is available
• Implement WAF rules to filter SQL injection payloads targeting the /ajax.php?action=save_package endpoint
• Review database user privileges and apply principle of least privilege to limit potential damage from SQL injection
• Back up the database immediately and audit for signs of compromise

Patch Information

At the time of this writing, no official vendor patch has been released for this vulnerability. Organizations using Gym Management System 1.0 should contact the vendor at ITSourceCode for updates on patch availability. In the meantime, implement the recommended workarounds to reduce exposure.

Workarounds

• Deploy a Web Application Firewall (WAF) with SQL injection detection rules to filter malicious requests
• Implement input validation at the application level to sanitize the ID parameter before database queries
• Place the application behind a reverse proxy with request filtering capabilities
• Limit database user permissions to only the minimum required operations for the application
• Consider taking the application offline if it contains sensitive data and cannot be adequately protected

# Example WAF rule for ModSecurity to block SQL injection in the ID parameter
SecRule ARGS:ID "@detectSQLi" \
    "id:100001,\
    phase:2,\
    deny,\
    status:403,\
    msg:'SQL Injection attempt detected in ID parameter',\
    log,\
    auditlog"