CVE-2025-2391: Blood Bank Management System SQLi Flaw

CVE-2025-2391 Overview

A critical SQL injection vulnerability has been identified in code-projects Blood Bank Management System version 1.0. This vulnerability exists in the Admin Login Page component, specifically within the /admin/admin_login.php file. The flaw allows unauthenticated remote attackers to inject malicious SQL commands through improperly sanitized input fields, potentially compromising the entire database backend of the blood bank management application.

Critical Impact

Unauthenticated attackers can remotely exploit this SQL injection vulnerability to bypass authentication, extract sensitive blood donor and recipient data, modify database records, or potentially gain complete control over the application's database server.

Affected Products

• Fabian Blood Bank Management System version 1.0
• code-projects Blood Bank Management System 1.0

Discovery Timeline

• 2025-03-17 - CVE CVE-2025-2391 published to NVD
• 2025-10-23 - Last updated in NVD database

Technical Details for CVE-2025-2391

Vulnerability Analysis

This SQL injection vulnerability (CWE-89) affects the administrative login functionality of the Blood Bank Management System. The vulnerable endpoint /admin/admin_login.php fails to properly sanitize user-supplied input before incorporating it into SQL queries. This is a classic example of an injection flaw (CWE-74) where untrusted data is sent to an interpreter as part of a command or query.

The vulnerability is particularly severe because it targets the authentication mechanism, allowing attackers to bypass login controls entirely. Blood bank systems handle highly sensitive personal health information including blood types, donor medical histories, and recipient records, making this vulnerability especially concerning from a data protection standpoint.

Root Cause

The root cause of this vulnerability is insufficient input validation and lack of parameterized queries in the Admin Login Page component. The application directly concatenates user-supplied credentials into SQL statements without proper sanitization or the use of prepared statements. This allows attackers to inject SQL metacharacters that alter the intended query logic, enabling authentication bypass and unauthorized database access.

Attack Vector

The attack can be initiated remotely over the network without requiring any authentication or user interaction. An attacker targets the admin login form at /admin/admin_login.php and submits specially crafted SQL injection payloads in the username or password fields. The exploit has been publicly disclosed, increasing the risk of widespread exploitation.

Common attack patterns include:

• Authentication bypass using payloads like ' OR '1'='1' -- in login fields
• UNION-based injection to extract database contents
• Time-based blind SQL injection for data exfiltration when error messages are suppressed
• Stacked queries to modify or delete database records

For detailed technical information about the SQL injection technique used, refer to the GitHub SQL Injection Document.

Detection Methods for CVE-2025-2391

Indicators of Compromise

• Unusual SQL error messages in application logs from /admin/admin_login.php
• Multiple failed login attempts followed by successful authentication without valid credentials
• Web server access logs showing SQL injection patterns such as UNION SELECT, OR 1=1, or comment sequences (--, #)
• Database query logs showing unexpected or malformed queries originating from the admin login endpoint
• Unauthorized access to admin functionality from unknown IP addresses

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block common SQL injection patterns targeting login forms
• Implement application-level logging to capture all authentication attempts with full request details
• Configure intrusion detection systems (IDS) to alert on SQL injection signatures in HTTP POST data
• Monitor database audit logs for unusual query patterns or privilege escalation attempts

Monitoring Recommendations

• Enable verbose logging for the /admin/admin_login.php endpoint to capture all input parameters
• Set up real-time alerts for repeated authentication failures followed by unexpected successes
• Monitor for unusual database queries including UNION, SELECT, DROP, or INSERT statements from the web application context
• Review access logs for requests containing URL-encoded SQL metacharacters such as %27 (single quote) or %3B (semicolon)

How to Mitigate CVE-2025-2391

Immediate Actions Required

• Remove or restrict access to the Blood Bank Management System from public networks immediately
• Implement network-level access controls to limit administrative access to trusted IP addresses only
• Deploy a Web Application Firewall (WAF) with SQL injection protection rules as a temporary mitigation
• Review database logs for evidence of prior exploitation and assess potential data exposure
• Consider taking the application offline until proper code remediation can be implemented

Patch Information

No official vendor patch has been released for this vulnerability at the time of publication. The affected software is a code-projects application by Fabian, and users should monitor the Code Projects Resource page for potential updates. Given the nature of this project, users may need to implement manual code fixes or consider alternative blood bank management solutions.

For additional vulnerability details and community discussion, refer to the VulDB #299890 entry.

Workarounds

• Replace vulnerable dynamic SQL queries with parameterized queries or prepared statements throughout the application
• Implement strict input validation using allowlists for username and password field formats
• Deploy network segmentation to isolate the application server from critical database resources
• Use stored procedures for authentication that do not concatenate user input into SQL strings
• Consider using an application-level proxy that can sanitize inputs before they reach the vulnerable endpoint

# Configuration example - Apache ModSecurity WAF rules to block SQL injection
# Add to your Apache configuration or modsecurity.conf

SecRule ARGS "@detectSQLi" \
    "id:1000,\
    phase:2,\
    deny,\
    status:403,\
    log,\
    msg:'SQL Injection Attempt Blocked - CVE-2025-2391',\
    tag:'attack-sqli'"

# Restrict access to admin login page by IP
<Location "/admin/admin_login.php">
    Require ip 10.0.0.0/8 192.168.0.0/16
</Location>