CVE-2025-11109: Campcodes Sales System SQLi Vulnerability

CVE-2025-11109 Overview

A SQL injection vulnerability has been identified in Campcodes Computer Sales and Inventory System version 1.0. The vulnerability exists in the /pages/us_edit.php file when the action=edit parameter is used. The manipulation of the ID argument allows attackers to inject malicious SQL statements. This vulnerability can be exploited remotely over the network, and exploit details have been publicly disclosed, increasing the risk of active exploitation.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to read, modify, or delete sensitive database contents, potentially compromising customer data, inventory records, and system integrity without requiring authentication.

Affected Products

• Campcodes Computer Sales and Inventory System 1.0

Discovery Timeline

• 2025-09-28 - CVE-2025-11109 published to NVD
• 2025-10-02 - Last updated in NVD database

Technical Details for CVE-2025-11109

Vulnerability Analysis

This SQL injection vulnerability (CWE-74: Injection) affects the user editing functionality within the Campcodes Computer Sales and Inventory System. The application fails to properly sanitize user-supplied input in the ID parameter before incorporating it into SQL queries. When users access the /pages/us_edit.php?action=edit endpoint, the application directly concatenates the ID value into database queries without adequate input validation or parameterized queries.

The network-accessible nature of this vulnerability means that attackers can remotely target exposed instances of this inventory management system. No authentication or user interaction is required to exploit this flaw, making it particularly dangerous for publicly accessible deployments.

Root Cause

The root cause of this vulnerability is improper input validation and the lack of parameterized queries or prepared statements in the affected PHP code. The application directly incorporates user-controlled input from the ID parameter into SQL statements, allowing attackers to inject arbitrary SQL commands that are then executed by the database engine.

Attack Vector

An attacker can exploit this vulnerability by crafting malicious HTTP requests to the vulnerable endpoint /pages/us_edit.php?action=edit with a specially crafted ID parameter containing SQL injection payloads. Since the attack can be initiated remotely over the network without any authentication requirements, any instance of the affected software exposed to the internet is at risk.

The vulnerability allows for various SQL injection techniques including:

• Union-based injection to extract data from other database tables
• Boolean-based blind injection to infer database structure and contents
• Time-based blind injection when direct output is not available
• Error-based injection to extract information through database error messages

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

Detection Methods for CVE-2025-11109

Indicators of Compromise

• Unusual SQL error messages in application logs, particularly those referencing the us_edit.php file
• Anomalous database queries containing SQL keywords (UNION, SELECT, OR, AND) in the ID parameter
• HTTP access logs showing requests to /pages/us_edit.php with encoded or suspicious ID values
• Unexpected database modifications or data exfiltration activity

Detection Strategies

• Deploy web application firewalls (WAF) with SQL injection detection rules targeting the /pages/us_edit.php endpoint
• Configure intrusion detection systems (IDS) to alert on SQL injection attack patterns in HTTP traffic
• Implement database activity monitoring to detect anomalous query patterns and unauthorized data access
• Review web server access logs for requests containing SQL metacharacters in the ID parameter

Monitoring Recommendations

• Enable verbose logging for the affected application and database to capture detailed query information
• Set up real-time alerting for SQL injection signatures in network traffic to the vulnerable endpoint
• Monitor database audit logs for unusual query patterns, mass data reads, or privilege escalation attempts
• Establish baseline network behavior and alert on deviations that may indicate exploitation attempts

How to Mitigate CVE-2025-11109

Immediate Actions Required

• Restrict network access to the Campcodes Computer Sales and Inventory System to trusted internal networks only
• Implement web application firewall rules to block SQL injection attempts targeting /pages/us_edit.php
• Apply input validation at the network perimeter to filter malicious requests before they reach the application
• Consider taking the affected system offline until a permanent fix can be implemented

Patch Information

At the time of publication, no official vendor patch is available for CVE-2025-11109. Organizations using Campcodes Computer Sales and Inventory System 1.0 should monitor the vendor website for security updates. In the absence of a patch, implementing compensating controls and network-level protections is essential.

Workarounds

• Place the application behind a web application firewall configured with SQL injection protection rules
• Implement strict input validation to ensure the ID parameter accepts only numeric values
• Restrict access to the /pages/us_edit.php endpoint through IP allowlisting or additional authentication
• Consider modifying the application source code to use prepared statements and parameterized queries if possible

# Example: Apache mod_rewrite rule to block suspicious ID parameters
# Add to .htaccess or Apache configuration
RewriteEngine On
RewriteCond %{QUERY_STRING} (union|select|insert|update|delete|drop|script) [NC]
RewriteRule ^pages/us_edit\.php$ - [F,L]