CVE-2025-6470: Online Bidding System SQLi Vulnerability

CVE-2025-6470 Overview

A critical SQL injection vulnerability has been discovered in the Fabian Online Bidding System version 1.0. The vulnerability exists in the /bidlog.php file, where improper handling of the ID parameter allows attackers to inject malicious SQL queries. This flaw enables remote attackers to manipulate database queries without authentication, potentially leading to unauthorized data access, modification, or deletion.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to extract sensitive bidding data, manipulate auction records, or potentially compromise the underlying database server through the vulnerable ID parameter in /bidlog.php.

Affected Products

• Fabian Online Bidding System 1.0

Discovery Timeline

• 2025-06-22 - CVE-2025-6470 published to NVD
• 2025-06-27 - Last updated in NVD database

Technical Details for CVE-2025-6470

Vulnerability Analysis

This SQL injection vulnerability stems from insufficient input validation in the /bidlog.php file of the Online Bidding System. The application fails to properly sanitize the ID parameter before incorporating it into SQL queries, creating a direct injection point for malicious actors.

The vulnerability is network-accessible and requires no authentication or user interaction to exploit. Attackers can remotely submit crafted requests containing SQL payloads through the ID parameter, which the application processes without adequate sanitization. This allows the injected SQL code to execute directly against the backend database.

The exploitation potential has been publicly disclosed, increasing the risk of active attacks against unpatched systems. Successful exploitation could result in unauthorized access to bidding records, user credentials, financial information, and other sensitive data stored in the application's database.

Root Cause

The root cause of CVE-2025-6470 is classified under CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component), commonly known as injection. The /bidlog.php script directly incorporates user-supplied input from the ID parameter into database queries without implementing parameterized queries, prepared statements, or proper input sanitization. This allows specially crafted input containing SQL syntax to be interpreted as executable code rather than data.

Attack Vector

The attack vector for this vulnerability is network-based, requiring no privileges or user interaction. An attacker can craft HTTP requests to the /bidlog.php endpoint with malicious SQL payloads in the ID parameter. The vulnerable application concatenates this unsanitized input directly into SQL queries, enabling various SQL injection techniques including UNION-based, error-based, or blind SQL injection attacks.

The vulnerability allows attackers to retrieve sensitive information from the database, modify or delete records, and potentially execute administrative operations depending on database permissions. For detailed technical information, refer to the GitHub CVE Issue Tracker and VulDB #313578.

Detection Methods for CVE-2025-6470

Indicators of Compromise

• Unusual HTTP requests to /bidlog.php containing SQL keywords such as UNION, SELECT, INSERT, UPDATE, DELETE, or DROP in the ID parameter
• Database error messages appearing in application logs or responses indicating SQL syntax errors
• Unexpected database queries or access patterns in database audit logs
• Anomalous data extraction or bulk database reads from the bidding system

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block SQL injection patterns targeting the /bidlog.php endpoint
• Monitor web server access logs for requests containing SQL injection signatures in the ID parameter
• Deploy database activity monitoring to identify unusual query patterns or unauthorized data access
• Configure intrusion detection systems (IDS) with signatures for common SQL injection attack patterns

Monitoring Recommendations

• Enable detailed logging for all requests to /bidlog.php and analyze ID parameter values for suspicious content
• Set up alerts for database errors that may indicate attempted SQL injection exploitation
• Monitor for unusual database response times or data transfer volumes that could indicate data exfiltration
• Review database user privileges to ensure the application uses least-privilege access

How to Mitigate CVE-2025-6470

Immediate Actions Required

• Restrict or disable access to /bidlog.php if the functionality is not critical to operations
• Implement a Web Application Firewall (WAF) to filter malicious requests targeting the ID parameter
• Review and restrict database user permissions to minimize potential impact from successful exploitation
• Consider taking the Online Bidding System offline until a patch is applied or the vulnerability is remediated

Patch Information

No official vendor patch has been released for this vulnerability at the time of publication. Organizations using the Fabian Online Bidding System 1.0 should monitor the Code Projects Resource Hub for security updates. Given the public disclosure of this exploit, administrators should implement compensating controls immediately while awaiting an official fix.

Workarounds

• Implement input validation on the ID parameter to accept only numeric values
• Use parameterized queries or prepared statements when modifying the source code to prevent SQL injection
• Deploy a reverse proxy or WAF with SQL injection protection rules in front of the application
• Restrict network access to the bidding system to trusted IP addresses only

# Example WAF rule to block SQL injection attempts (ModSecurity)
SecRule ARGS:ID "@detectSQLi" \
    "id:1001,\
    phase:2,\
    deny,\
    status:403,\
    msg:'SQL Injection attempt detected in ID parameter',\
    log,\
    auditlog"