CVE-2025-6489: Agri-Trading System SQLi Vulnerability

CVE-2025-6489 Overview

A critical SQL injection vulnerability has been identified in itsourcecode Agri-Trading Online Shopping System version 1.0. This vulnerability affects the /transactionsave.php file, where improper handling of the del parameter allows attackers to inject malicious SQL queries. The attack can be initiated remotely without authentication, and exploit details have been publicly disclosed, increasing the risk of active exploitation.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to manipulate database queries, potentially leading to unauthorized data access, data modification, or complete database compromise.

Affected Products

• Adonesevangelista Agri-Trading Online Shopping System 1.0
• itsourcecode Agri-Trading Online Shopping System 1.0

Discovery Timeline

• 2025-06-22 - CVE-2025-6489 published to NVD
• 2025-06-25 - Last updated in NVD database

Technical Details for CVE-2025-6489

Vulnerability Analysis

This SQL injection vulnerability exists in the /transactionsave.php endpoint of the Agri-Trading Online Shopping System. The vulnerability stems from insufficient input validation and sanitization of the del parameter before it is incorporated into SQL queries. When user-supplied input is directly concatenated into database queries without proper parameterization or escaping, attackers can inject arbitrary SQL commands that execute with the privileges of the database user.

The network-accessible nature of this vulnerability means that any attacker with HTTP access to the application can attempt exploitation. No authentication is required to reach the vulnerable endpoint, significantly lowering the barrier to attack. The public disclosure of exploit details further increases the likelihood of opportunistic attacks against unpatched systems.

Root Cause

The root cause of this vulnerability is classified as CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component), commonly referred to as injection. The application fails to properly validate, sanitize, or parameterize user input from the del parameter before incorporating it into SQL queries executed against the backend database. This allows attackers to break out of the intended query context and inject their own SQL commands.

Attack Vector

The attack is network-based and can be executed remotely by sending crafted HTTP requests to the /transactionsave.php endpoint. An attacker manipulates the del parameter to include SQL metacharacters and malicious query fragments. Since the parameter is not properly sanitized, these injected elements are interpreted as part of the SQL query by the database engine.

Typical exploitation scenarios include:

• Data Exfiltration: Using UNION-based or error-based injection techniques to extract sensitive data from the database, including user credentials, personal information, and transaction records.
• Authentication Bypass: Manipulating queries to bypass login mechanisms or gain unauthorized access to administrative functions.
• Data Manipulation: Inserting, updating, or deleting records in the database to modify pricing, inventory, or order information.
• Privilege Escalation: In some database configurations, SQL injection can be leveraged to execute operating system commands or escalate privileges.

For detailed technical analysis and proof-of-concept information, refer to the GitHub CVE Issue Discussion and the VulDB CVE Analysis #313600.

Detection Methods for CVE-2025-6489

Indicators of Compromise

• Unusual or malformed HTTP requests to /transactionsave.php containing SQL syntax characters such as single quotes, semicolons, or SQL keywords
• Database error messages appearing in application responses or logs indicating query syntax errors
• Unexpected database query patterns or execution of unauthorized queries in database audit logs
• Evidence of data exfiltration or unauthorized access to sensitive records

Detection Strategies

• Implement web application firewall (WAF) rules to detect and block SQL injection patterns targeting the del parameter
• Monitor application logs for requests containing SQL injection indicators such as ' OR 1=1, UNION SELECT, --, or other common injection payloads
• Enable database query logging and audit trails to identify anomalous query patterns or unauthorized data access
• Deploy intrusion detection systems (IDS) with signatures for SQL injection attack patterns

Monitoring Recommendations

• Continuously monitor HTTP traffic to /transactionsave.php for suspicious parameter values
• Set up alerts for database errors that may indicate injection attempts
• Review access logs regularly for patterns of automated scanning or repeated injection attempts
• Monitor database performance metrics for unusual query execution times that may indicate injection-based data extraction

How to Mitigate CVE-2025-6489

Immediate Actions Required

• Remove or disable public access to the affected Agri-Trading Online Shopping System until a patch is applied
• Implement input validation to reject requests containing SQL metacharacters in the del parameter
• Deploy a web application firewall (WAF) with SQL injection protection rules as a temporary mitigation
• Review database accounts used by the application and apply least-privilege principles

Patch Information

No official vendor patch is currently available for this vulnerability. The affected software is distributed through IT Source Code, which provides source code for educational purposes. Organizations using this software in production environments should consider the following remediation approaches:

1. Modify the source code to implement prepared statements or parameterized queries for all database interactions
2. Add input validation and sanitization for the del parameter
3. Consider replacing the vulnerable application with a more secure alternative

Additional technical details and community discussion can be found at the VulDB #313600 entry.

Workarounds

• Restrict network access to the application using firewall rules, limiting access to trusted IP addresses only
• Implement server-side input validation to reject any input containing SQL metacharacters or reserved keywords
• Use a reverse proxy or WAF to filter malicious requests before they reach the application
• If feasible, disable or remove the /transactionsave.php endpoint until the vulnerability can be properly remediated

For PHP-based applications like this one, the recommended long-term fix involves replacing direct SQL query construction with prepared statements using PDO or MySQLi with parameterized queries. This ensures user input is treated as data rather than executable SQL code.