CVE-2025-3306: Blood Bank Management System SQLi Flaw

CVE-2025-3306 Overview

A critical SQL injection vulnerability has been identified in Code-projects Blood Bank Management System version 1.0. This vulnerability affects the /don.php file, where manipulation of the fullname parameter allows attackers to inject malicious SQL queries. The attack can be initiated remotely without authentication, potentially compromising the entire database containing sensitive donor and patient information.

Critical Impact

Unauthenticated remote attackers can exploit this SQL injection vulnerability to extract, modify, or delete sensitive medical and donor data from the Blood Bank Management System database.

Affected Products

• Code-projects Blood Bank Management System version 1.0

Discovery Timeline

• April 6, 2025 - CVE-2025-3306 published to NVD
• April 8, 2025 - Last updated in NVD database

Technical Details for CVE-2025-3306

Vulnerability Analysis

This SQL injection vulnerability exists in the /don.php file of the Blood Bank Management System. The application fails to properly sanitize user-supplied input in the fullname parameter before incorporating it into SQL queries. This allows attackers to manipulate the query structure and execute arbitrary SQL commands against the underlying database.

The vulnerability is classified under CWE-89 (SQL Injection) and CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component). The network-accessible nature of this flaw means attackers can exploit it remotely without requiring prior authentication or user interaction. According to the vulnerability disclosure, other parameters in the application may also be susceptible to similar injection attacks.

Root Cause

The root cause of this vulnerability is the lack of proper input validation and parameterized queries in the /don.php file. User-supplied data from the fullname parameter is directly concatenated into SQL query strings without sanitization or the use of prepared statements. This classic SQL injection pattern allows attackers to break out of the intended query context and inject their own SQL syntax.

Attack Vector

The attack vector is network-based, requiring no authentication or privileges. An attacker can craft malicious HTTP requests to the /don.php endpoint, injecting SQL payloads through the fullname parameter. Since the exploit has been publicly disclosed, attackers can leverage existing proof-of-concept techniques to extract sensitive data, bypass authentication, modify records, or potentially gain further access to the underlying system.

The vulnerability can be exploited by sending specially crafted input containing SQL metacharacters and commands through the fullname parameter. For example, an attacker could inject payloads designed to extract database contents using UNION-based techniques, or use time-based blind injection to infer data when direct output is not available. See the GitHub CVE Issue Discussion for technical details.

Detection Methods for CVE-2025-3306

Indicators of Compromise

• Unusual SQL error messages appearing in web server logs or returned to clients
• Anomalous database queries containing UNION SELECT, OR 1=1, or comment sequences (--) in the fullname parameter
• Unexpected data exfiltration patterns or large database query response sizes
• Failed or successful authentication attempts without valid credentials

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block SQL injection patterns in HTTP requests to /don.php
• Implement database activity monitoring to detect anomalous queries or unauthorized data access
• Review web server access logs for suspicious requests containing SQL metacharacters targeting the fullname parameter
• Enable detailed application logging to capture input validation failures

Monitoring Recommendations

• Monitor database query logs for unusual patterns including multiple failed queries or excessive data retrieval
• Set up alerts for HTTP requests containing common SQL injection signatures targeting vulnerable endpoints
• Track authentication events and database access patterns for anomalous behavior
• Implement network traffic analysis to detect potential data exfiltration

How to Mitigate CVE-2025-3306

Immediate Actions Required

• Restrict network access to the Blood Bank Management System to trusted IP addresses only
• Implement a Web Application Firewall with SQL injection protection rules
• Disable or remove the vulnerable /don.php endpoint if not critical to operations
• Conduct a security audit to identify all affected parameters and endpoints

Patch Information

No official patch information is currently available from the vendor. Organizations using the Blood Bank Management System 1.0 should contact Code Projects for remediation guidance or consider implementing the workarounds below. Monitor the VulDB Threat Intelligence Report for updates on patch availability.

Workarounds

• Implement input validation and parameterized queries (prepared statements) for all user inputs in /don.php
• Deploy a reverse proxy or WAF to filter malicious SQL injection payloads
• Apply principle of least privilege to database accounts used by the application
• Consider temporarily disabling the affected functionality until a proper fix is implemented
• Implement Content Security Policy headers and other defense-in-depth measures

# Example WAF rule for ModSecurity to block SQL injection attempts
SecRule ARGS:fullname "@detectSQLi" \
    "id:1001,\
    phase:2,\
    deny,\
    status:403,\
    log,\
    msg:'SQL Injection attempt detected in fullname parameter',\
    tag:'attack-sqli'"