CVE-2025-6307: Online Shoe Store SQL Injection Flaw

CVE-2025-6307 Overview

A critical SQL injection vulnerability has been identified in Code-projects Online Shoe Store version 1.0. This vulnerability exists in the file /function/edit_customer.php, where the firstname parameter is susceptible to SQL injection attacks due to improper input sanitization. The vulnerability can be exploited remotely without authentication, potentially allowing attackers to manipulate database queries and access sensitive customer data. The exploit has been publicly disclosed, and other parameters within the application may also be affected.

Critical Impact

Unauthenticated remote attackers can exploit this SQL injection vulnerability to extract, modify, or delete database contents, potentially compromising customer personally identifiable information (PII) and undermining the integrity of the e-commerce platform.

Affected Products

• Code-projects Online Shoe Store 1.0

Discovery Timeline

• 2025-06-20 - CVE-2025-6307 published to NVD
• 2025-06-26 - Last updated in NVD database

Technical Details for CVE-2025-6307

Vulnerability Analysis

This SQL injection vulnerability (CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component) stems from the application's failure to properly validate and sanitize user-supplied input in the edit_customer.php file. When processing the firstname parameter, the application directly incorporates user input into SQL queries without adequate parameterization or escaping mechanisms.

The vulnerability is accessible via the network without requiring any authentication or user interaction, making it particularly dangerous for internet-facing deployments. Since the application is designed for e-commerce operations, successful exploitation could expose sensitive customer data including names, addresses, payment information, and order histories stored in the backend database.

Root Cause

The root cause of this vulnerability is the lack of prepared statements or parameterized queries in the edit_customer.php file. The application constructs SQL queries by directly concatenating user input from the firstname parameter into the query string. This classic injection pattern allows attackers to break out of the intended query context and inject arbitrary SQL commands. The vulnerability indicates a broader systemic issue with input handling, as the CVE description notes that other parameters may also be affected.

Attack Vector

The attack vector is network-based, requiring no authentication or privileges. An attacker can craft malicious HTTP requests targeting the /function/edit_customer.php endpoint with specially crafted SQL syntax in the firstname parameter. The injected SQL code executes with the privileges of the database user configured for the web application.

Common exploitation techniques include:

• Union-based SQL injection to extract data from other tables
• Boolean-based blind injection to enumerate database contents
• Time-based blind injection when error messages are suppressed
• Stacked queries (if supported by the database driver) to execute multiple statements

Since no verified code examples are available, organizations should refer to the VulDB entry and the GitHub CVE Issue Tracker for additional technical details about exploitation techniques.

Detection Methods for CVE-2025-6307

Indicators of Compromise

• Unusual or malformed requests to /function/edit_customer.php containing SQL syntax characters such as single quotes, double dashes, or UNION keywords
• Database error messages appearing in web server logs or application responses
• Unexpected database queries or query execution patterns in database audit logs
• Anomalous data access patterns, particularly bulk extraction of customer records

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block common SQL injection patterns targeting the firstname parameter and similar input fields
• Enable verbose logging for the /function/ directory endpoints and monitor for suspicious query strings
• Deploy database activity monitoring to detect anomalous query patterns or unauthorized data access
• Configure intrusion detection systems (IDS) with signatures for SQL injection payloads

Monitoring Recommendations

• Review web server access logs for requests to edit_customer.php with unusual parameter lengths or special characters
• Monitor database logs for syntax errors or unexpected query structures that may indicate injection attempts
• Set up alerts for bulk data exports or unusual SELECT query volumes against customer-related tables
• Track authentication and authorization anomalies that may indicate post-exploitation activity

How to Mitigate CVE-2025-6307

Immediate Actions Required

• Restrict network access to the vulnerable /function/edit_customer.php endpoint using firewall rules or access control lists
• Deploy a Web Application Firewall (WAF) with SQL injection protection rules if not already in place
• Consider taking the affected application offline until a proper fix can be implemented
• Audit database logs for evidence of prior exploitation and assess potential data exposure

Patch Information

As of the last NVD update on 2025-06-26, no official patch has been released by Code-projects for this vulnerability. Organizations should monitor the Code Projects Resource Hub for security updates. Given the nature of code-projects software as educational/demonstration code, organizations running this software in production environments should prioritize migration to properly maintained e-commerce platforms or implement the workarounds described below.

Workarounds

• Implement input validation by modifying edit_customer.php to use parameterized queries (prepared statements) instead of string concatenation
• Add server-side input sanitization to reject or escape special SQL characters in the firstname parameter and all other user inputs
• Restrict database user privileges to minimum required permissions using the principle of least privilege
• Deploy network-level access controls to limit exposure of the vulnerable endpoint to trusted IP ranges only

# Example Apache .htaccess restriction for vulnerable endpoint
<Files "edit_customer.php">
    Require ip 192.168.1.0/24
    Require ip 10.0.0.0/8
</Files>