CVE-2025-1856: Codezips Gym Management System SQLi Flaw

CVE-2025-1856 Overview

A critical SQL injection vulnerability has been identified in Codezips Gym Management System version 1.0. The vulnerability exists in the /dashboard/admin/gen_invoice.php file, where the id parameter is not properly sanitized before being used in SQL queries. This allows remote attackers to manipulate database queries by injecting malicious SQL code through the vulnerable parameter.

Critical Impact

Unauthenticated attackers can remotely exploit this SQL injection vulnerability to extract sensitive data, modify database contents, or potentially gain unauthorized access to the underlying system through the compromised web application.

Affected Products

• Codezips Gym Management System 1.0

Discovery Timeline

• 2025-03-03 - CVE-2025-1856 published to NVD
• 2025-06-24 - Last updated in NVD database

Technical Details for CVE-2025-1856

Vulnerability Analysis

This SQL injection vulnerability affects the invoice generation functionality within the Codezips Gym Management System administrative dashboard. The /dashboard/admin/gen_invoice.php endpoint accepts an id parameter that is directly incorporated into database queries without adequate input validation or parameterization. This classic injection flaw enables attackers to modify the intended SQL query logic, potentially leading to unauthorized data access, data manipulation, or complete database compromise.

The vulnerability can be exploited remotely over the network without requiring any authentication or user interaction. An attacker can craft malicious HTTP requests containing SQL injection payloads in the id parameter to extract sensitive gym member information, administrative credentials, or financial records stored in the database.

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 input. The id parameter value is directly concatenated into SQL queries, allowing attackers to break out of the intended query structure and inject arbitrary SQL commands. This represents a fundamental secure coding failure where untrusted user input is not properly sanitized before being used in database operations.

Attack Vector

The attack vector is network-based, requiring no authentication or user interaction. An attacker can exploit this vulnerability by sending specially crafted HTTP requests to the vulnerable endpoint. The attacker manipulates the id parameter in requests to /dashboard/admin/gen_invoice.php, injecting SQL syntax that alters the query's behavior.

Typical exploitation involves using UNION-based, error-based, or blind SQL injection techniques to enumerate database structure, extract sensitive data, or bypass authentication mechanisms. The vulnerability manifests when processing invoice generation requests, where the id parameter is expected to contain a valid invoice or member identifier but instead receives malicious SQL code.

For technical details and proof-of-concept information, refer to the GitHub CVE Details and VulDB advisory.

Detection Methods for CVE-2025-1856

Indicators of Compromise

• Unusual or malformed requests to /dashboard/admin/gen_invoice.php containing SQL keywords such as UNION, SELECT, INSERT, DELETE, or comment syntax (--, /*)
• HTTP request logs showing suspicious id parameter values with special characters or SQL syntax
• Database error messages appearing in application responses or logs
• Unexpected database query patterns or execution times indicating blind SQL injection attempts

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block SQL injection patterns in HTTP requests
• Implement intrusion detection system (IDS) signatures for common SQL injection attack strings targeting the gen_invoice.php endpoint
• Enable detailed logging for the web application and database to capture and correlate suspicious query patterns
• Configure alerts for database errors that may indicate exploitation attempts

Monitoring Recommendations

• Monitor web server access logs for requests to /dashboard/admin/gen_invoice.php with anomalous parameter values
• Set up real-time alerting for database query failures or syntax errors from the web application
• Track unusual database read patterns or data exfiltration indicators
• Implement file integrity monitoring on the Gym Management System application files to detect potential post-exploitation modifications

How to Mitigate CVE-2025-1856

Immediate Actions Required

• Restrict access to the Gym Management System administrative interface to trusted IP addresses only
• Implement Web Application Firewall (WAF) rules to block SQL injection attempts targeting the vulnerable endpoint
• Consider taking the application offline if it contains sensitive data until a patch is available
• Review database access logs for signs of previous exploitation and assess potential data exposure

Patch Information

No official vendor patch has been released for this vulnerability at this time. The vendor (Codezips) has not published a security advisory or patch for Gym Management System version 1.0. Organizations using this software should implement the workarounds below and monitor for vendor updates. For additional vulnerability information, refer to VulDB submission #506107.

Workarounds

• Deploy a Web Application Firewall (WAF) configured to detect and block SQL injection payloads in the id parameter
• Implement input validation at the web server or reverse proxy level to ensure the id parameter contains only numeric values
• Restrict network access to the administrative dashboard using firewall rules or VPN requirements
• If source code access is available, modify gen_invoice.php to use prepared statements with parameterized queries

# Example: Nginx location block to restrict access to admin panel
location /dashboard/admin/ {
    allow 192.168.1.0/24;  # Allow only internal network
    deny all;
    
    # Basic input validation for id parameter
    if ($arg_id ~* "['\";]|union|select|insert|delete|update|drop") {
        return 403;
    }
}