CVE-2025-9418: Apartment Management System SQLi Vulnerability

CVE-2025-9418 Overview

A SQL injection vulnerability has been identified in itsourcecode Apartment Management System version 1.0. The vulnerability exists in an unknown function of the file /owner/addowner.php, where manipulation of the ID argument leads to SQL injection. This flaw can be exploited remotely, and the exploit has been disclosed publicly and may be used by attackers.

Critical Impact

This SQL injection vulnerability allows remote attackers to manipulate database queries through the ID parameter in /owner/addowner.php, potentially enabling unauthorized data access, modification, or deletion in the apartment management system database.

Affected Products

• Admerc Apartment Management System 1.0

Discovery Timeline

• 2025-08-25 - CVE-2025-9418 published to NVD
• 2025-09-02 - Last updated in NVD database

Technical Details for CVE-2025-9418

Vulnerability Analysis

This SQL injection vulnerability affects the Apartment Management System, a web application designed to manage residential apartment properties. The vulnerability resides in the /owner/addowner.php endpoint, which appears to handle owner registration or management functionality. The ID parameter is not properly sanitized before being incorporated into SQL queries, allowing attackers to inject malicious SQL statements.

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

Root Cause

The root cause of this vulnerability is inadequate input validation and lack of parameterized queries in the /owner/addowner.php file. When user-supplied data for the ID argument is directly concatenated into SQL statements without proper sanitization or the use of prepared statements, it creates an injection point that attackers can exploit.

Attack Vector

The attack can be launched remotely over the network without requiring authentication or user interaction. An attacker can craft malicious HTTP requests to the /owner/addowner.php endpoint, manipulating the ID parameter to inject SQL commands. This could allow the attacker to:

• Extract sensitive data from the database including tenant information, payment records, and administrator credentials
• Modify or delete existing database records
• Bypass authentication mechanisms
• Potentially execute operating system commands if the database server is misconfigured

Since no verified code examples are available, the vulnerability mechanism involves injecting SQL syntax through the ID parameter. Attackers typically use techniques such as union-based injection, error-based injection, or time-based blind SQL injection depending on the application's response behavior. For detailed technical analysis, refer to the GitHub CVE Issue Discussion and VulDB #321261 Details.

Detection Methods for CVE-2025-9418

Indicators of Compromise

• Unusual or malformed HTTP requests targeting /owner/addowner.php with suspicious ID parameter values
• Web server logs containing SQL keywords (SELECT, UNION, INSERT, DROP, etc.) in request parameters
• Database error messages exposed in application responses indicating SQL syntax errors
• Unexpected database queries or access patterns in database audit logs

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect SQL injection patterns in the ID parameter
• Monitor web server access logs for requests to /owner/addowner.php containing SQL metacharacters such as single quotes, semicolons, or SQL keywords
• Deploy intrusion detection systems (IDS) with signatures for common SQL injection attack patterns
• Enable database query logging and alert on anomalous query structures

Monitoring Recommendations

• Configure real-time alerting for requests to /owner/addowner.php with potentially malicious payloads
• Implement application-level logging to capture all parameter values submitted to vulnerable endpoints
• Monitor database performance metrics for unusual query execution times that may indicate time-based blind SQL injection attempts
• Review database audit logs regularly for unauthorized data access or modification

How to Mitigate CVE-2025-9418

Immediate Actions Required

• Restrict access to /owner/addowner.php using network-level controls or web server configuration until a patch is available
• Deploy WAF rules to filter SQL injection attempts targeting the ID parameter
• Implement input validation at the application level to reject non-numeric characters in the ID parameter if numeric values are expected
• Review and audit all database user permissions, applying the principle of least privilege

Patch Information

As of the last update on 2025-09-02, no official vendor patch has been released for this vulnerability. Organizations using the itsourcecode Apartment Management System 1.0 should monitor the IT Source Code Platform for security updates. Additional technical details and community discussion can be found in the GitHub CVE Issue Discussion and VulDB #321261 Threat Report.

Workarounds

• Modify the vulnerable PHP file to use prepared statements with parameterized queries instead of string concatenation
• Implement server-side input validation to ensure the ID parameter contains only expected characters
• Deploy a reverse proxy or WAF in front of the application to filter malicious requests
• Consider taking the application offline or restricting access to trusted networks until proper remediation can be implemented

# Example: Restrict access to the vulnerable endpoint using Apache .htaccess
<Files "addowner.php">
    Order Deny,Allow
    Deny from all
    Allow from 192.168.1.0/24
</Files>