CVE-2025-6468: Online Bidding System SQLi Vulnerability

CVE-2025-6468 Overview

A critical SQL injection vulnerability has been identified in the Fabian Online Bidding System version 1.0. The vulnerability exists in the /bidnow.php file, where improper handling of the ID parameter allows attackers to inject malicious SQL queries. This flaw can be exploited remotely without authentication, potentially enabling unauthorized access to sensitive database information, data manipulation, or complete database compromise.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to extract sensitive data, modify database records, or potentially gain unauthorized access to the underlying system through the vulnerable /bidnow.php endpoint.

Affected Products

• Fabian Online Bidding System 1.0
• code-projects Online Bidding System 1.0

Discovery Timeline

• 2025-06-22 - CVE-2025-6468 published to NVD
• 2025-06-27 - Last updated in NVD database

Technical Details for CVE-2025-6468

Vulnerability Analysis

This vulnerability stems from inadequate input validation in the /bidnow.php file within the Online Bidding System. The application fails to properly sanitize the ID parameter before incorporating it into SQL queries, creating a classic SQL injection attack surface. The network-accessible nature of this endpoint means any unauthenticated remote attacker can craft malicious requests to exploit this flaw.

The exploit has been publicly disclosed, increasing the risk of active exploitation in the wild. Attackers targeting this vulnerability can potentially read sensitive auction data, user credentials, and other confidential information stored in the backend database. Beyond data theft, successful exploitation could allow modification or deletion of database records, disrupting the bidding platform's integrity.

Root Cause

The root cause of this vulnerability is classified under CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component), commonly known as Injection. The application directly incorporates user-supplied input from the ID parameter into SQL queries without proper sanitization, parameterization, or escaping. This allows attackers to break out of the intended query structure and execute arbitrary SQL commands.

Attack Vector

The attack vector is network-based, requiring no user interaction or prior authentication. An attacker can remotely target the vulnerable /bidnow.php endpoint by manipulating the ID parameter in HTTP requests. The low attack complexity means even less sophisticated attackers can successfully exploit this vulnerability using standard SQL injection techniques.

The vulnerability allows manipulation of the ID parameter in requests to /bidnow.php. An attacker can inject SQL syntax such as single quotes, UNION statements, or boolean-based payloads to extract data or manipulate query logic. For technical details on the exploitation method, refer to the GitHub CVE Issue Tracker and VulDB Entry #313576.

Detection Methods for CVE-2025-6468

Indicators of Compromise

• Unusual or malformed requests to /bidnow.php containing SQL keywords such as UNION, SELECT, OR 1=1, or single quotes in the ID parameter
• Database error messages or exceptions appearing in web server logs related to SQL syntax errors
• Unexpected database queries or access patterns originating from the web application
• Evidence of data exfiltration through timing-based or error-based SQL injection techniques

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block common SQL injection patterns targeting the ID parameter
• Monitor web server access logs for requests to /bidnow.php containing suspicious characters or SQL keywords
• Deploy database activity monitoring to detect anomalous queries or unauthorized data access
• Use intrusion detection systems (IDS) with signatures for SQL injection attack patterns

Monitoring Recommendations

• Enable detailed logging for all requests to /bidnow.php and analyze for injection attempts
• Configure database audit logging to track all queries executed against sensitive tables
• Set up alerting for multiple failed database queries or SQL syntax errors from the web application
• Review access logs regularly for patterns indicating automated scanning or exploitation attempts

How to Mitigate CVE-2025-6468

Immediate Actions Required

• Remove or restrict access to the /bidnow.php file until a patch is available
• Implement input validation to reject non-numeric values in the ID parameter
• Deploy a Web Application Firewall (WAF) with SQL injection protection rules
• Review database permissions and limit the web application's database user privileges to minimum required access

Patch Information

No official vendor patch is currently available for this vulnerability. The affected software is a code-projects educational application. Organizations using this software should implement the workarounds below and monitor the Code Projects Resource for any security updates.

Workarounds

• Use parameterized queries or prepared statements when handling the ID parameter in database queries
• Implement strict input validation to ensure the ID parameter only accepts integer values
• Apply the principle of least privilege to database accounts used by the web application
• Consider replacing the vulnerable component with a secure implementation or alternative solution

# Example: Restrict access to vulnerable endpoint via Apache configuration
<Location /bidnow.php>
    Order Deny,Allow
    Deny from all
    # Allow only from trusted internal networks if needed
    # Allow from 192.168.1.0/24
</Location>