CVE-2025-4718: Sales And Inventory System SQLi Flaw

CVE-2025-4718 Overview

A critical SQL Injection vulnerability has been identified in Campcodes Sales and Inventory System version 1.0. The vulnerability exists within the /pages/customer_add.php file, where the manipulation of the last parameter allows attackers to inject malicious SQL statements. This flaw enables remote attackers to execute arbitrary SQL commands against the underlying database without authentication, potentially compromising the confidentiality, integrity, and availability of stored data.

Critical Impact

This SQL Injection vulnerability allows unauthenticated remote attackers to manipulate database queries, potentially leading to unauthorized data access, data modification, or deletion of sensitive customer and inventory information.

Affected Products

• Campcodes Sales and Inventory System 1.0
• /pages/customer_add.php endpoint
• Additional parameters within the same file may also be vulnerable

Discovery Timeline

• 2025-05-15 - CVE-2025-4718 published to NVD
• 2025-05-28 - Last updated in NVD database

Technical Details for CVE-2025-4718

Vulnerability Analysis

This SQL Injection vulnerability (CWE-89) represents a classic injection flaw where user-supplied input is incorporated directly into SQL queries without proper sanitization or parameterization. The vulnerability is accessible over the network and requires no authentication or user interaction to exploit, making it particularly dangerous for internet-facing deployments.

The affected endpoint /pages/customer_add.php processes the last parameter in a way that allows attackers to break out of the intended SQL query context and inject their own SQL commands. Given that the exploit has been publicly disclosed, the attack surface for vulnerable installations is significantly increased.

Root Cause

The root cause of CVE-2025-4718 is improper input validation (CWE-74) combined with the direct concatenation of user-supplied data into SQL queries. The application fails to implement prepared statements or parameterized queries, allowing special characters in the last parameter to alter the SQL query structure. The developers did not apply adequate input sanitization or output encoding before incorporating user data into database operations.

Attack Vector

The attack can be launched remotely over the network against the /pages/customer_add.php endpoint. An attacker can craft malicious HTTP requests containing SQL injection payloads in the last parameter. Since no authentication is required and the attack complexity is low, exploitation is straightforward for even novice attackers.

The vulnerability allows attackers to:

• Extract sensitive data from the database through UNION-based or blind SQL injection techniques
• Modify or delete existing database records
• Potentially gain access to other database tables containing customer information, inventory data, or credentials
• In some database configurations, achieve command execution on the underlying server

For detailed technical analysis, refer to the GitHub Issue Discussion and VulDB entry #309019.

Detection Methods for CVE-2025-4718

Indicators of Compromise

• Unusual or malformed requests to /pages/customer_add.php containing SQL syntax in the last parameter
• Web server logs showing requests with SQL keywords such as UNION, SELECT, DROP, INSERT, or comment delimiters like -- and /*
• Database error messages exposed in HTTP responses indicating query failures
• Unexpected database query patterns or unauthorized data access in database audit logs

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block SQL injection patterns targeting the last parameter
• Monitor application logs for repeated requests to /pages/customer_add.php with varying payloads
• Deploy database activity monitoring to identify anomalous queries originating from the web application
• Use intrusion detection systems (IDS) with signatures for common SQL injection attack patterns

Monitoring Recommendations

• Enable verbose logging on the web server and database to capture all requests to vulnerable endpoints
• Configure alerts for database errors or exceptions that may indicate exploitation attempts
• Monitor for unusual outbound data transfers that could indicate data exfiltration
• Implement real-time log analysis to detect SQL injection attack patterns

How to Mitigate CVE-2025-4718

Immediate Actions Required

• Restrict network access to the vulnerable /pages/customer_add.php endpoint using firewall rules or access control lists
• Deploy a Web Application Firewall (WAF) with SQL injection protection rules
• Disable or remove the Campcodes Sales and Inventory System if not critical until a patch is available
• Audit database for signs of compromise or unauthorized modifications

Patch Information

As of the last NVD update on 2025-05-28, no official vendor patch has been released for CVE-2025-4718. Administrators should monitor the Campcodes website for security updates. Given the public disclosure of this vulnerability, implementing workarounds and compensating controls is critical until an official fix is available.

Workarounds

• Implement input validation on the last parameter to allow only expected characters (alphanumeric values)
• Modify the source code to use prepared statements with parameterized queries instead of string concatenation
• Deploy a reverse proxy or WAF to filter malicious SQL injection payloads before they reach the application
• Restrict database user permissions to limit the impact of successful SQL injection attacks

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