CVE-2025-63531: Blood Bank Management System SQLi Flaw

CVE-2025-63531 Overview

A SQL injection vulnerability exists in the Blood Bank Management System 1.0 within the receiverLogin.php component. The application fails to properly sanitize user-supplied input in SQL queries, allowing an attacker to inject arbitrary SQL code. By manipulating the remail and rpassword fields, an attacker can bypass authentication and gain unauthorized access to the system.

Critical Impact

This vulnerability allows unauthenticated remote attackers to bypass authentication, access sensitive medical and personal data, and potentially compromise the entire database through SQL injection attacks on the login form.

Affected Products

• Shridharshukl Blood Bank Management System 1.0

Discovery Timeline

• 2025-12-01 - CVE-2025-63531 published to NVD
• 2025-12-02 - Last updated in NVD database

Technical Details for CVE-2025-63531

Vulnerability Analysis

This vulnerability represents a classic SQL injection flaw in the authentication mechanism of the Blood Bank Management System. The receiverLogin.php component directly incorporates user-supplied values from the remail and rpassword form fields into SQL queries without proper sanitization or parameterization. This allows attackers to craft malicious input that alters the intended SQL query logic.

The vulnerability is particularly dangerous because it affects the login functionality, which is typically the first line of defense for web applications. Successful exploitation grants attackers unauthorized access to the system without valid credentials, potentially exposing sensitive medical records, donor information, and blood bank inventory data.

Root Cause

The root cause of this vulnerability is improper input validation and the use of unsanitized user input in SQL query construction. The application directly concatenates user-provided values from the login form into SQL statements rather than using prepared statements or parameterized queries. This programming practice violates secure coding guidelines and creates a direct path for SQL injection attacks.

Attack Vector

The attack is network-based and requires no authentication or user interaction. An attacker can exploit this vulnerability by submitting specially crafted input through the login form's email and password fields. Common SQL injection payloads such as ' OR '1'='1 or ' OR 1=1-- can be used to manipulate the authentication query logic. The attack can be performed remotely against any exposed instance of the Blood Bank Management System, making it accessible to any attacker who can reach the login page.

The vulnerability affects the remail and rpassword parameters in the receiverLogin.php file. By injecting malicious SQL syntax into these fields, an attacker can modify the WHERE clause of the authentication query to always evaluate to true, effectively bypassing the password check entirely.

Detection Methods for CVE-2025-63531

Indicators of Compromise

• Unusual login patterns or successful authentications from unknown IP addresses
• SQL syntax errors in application logs indicating injection attempts
• Database query logs showing unexpected SQL commands or UNION-based queries
• Access to privileged functionality by accounts that should not have such access

Detection Strategies

• Monitor web application logs for SQL injection patterns in POST parameters to receiverLogin.php
• Implement Web Application Firewall (WAF) rules to detect and block common SQL injection payloads
• Deploy intrusion detection systems with signatures for SQL injection attack patterns
• Review database audit logs for anomalous queries or unauthorized data access

Monitoring Recommendations

• Enable detailed logging on the web server to capture all requests to receiverLogin.php
• Configure database auditing to track all authentication-related queries
• Set up alerts for multiple failed login attempts followed by successful authentication
• Monitor for data exfiltration patterns that may indicate post-exploitation activity

How to Mitigate CVE-2025-63531

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
• Consider taking the application offline if it contains sensitive data and cannot be immediately patched
• Review database logs for signs of prior exploitation and potential data compromise

Patch Information

No official vendor patch is currently available for this vulnerability. The Blood Bank Management System is an open-source project available on GitHub. Users should monitor the repository for security updates and consider implementing manual code fixes using prepared statements. Additional technical details about the vulnerability can be found in the CVE Analysis documentation.

Workarounds

• Implement input validation on the remail and rpassword fields to reject SQL metacharacters
• Modify the receiverLogin.php file to use parameterized queries or prepared statements with PDO
• Place the application behind a reverse proxy with SQL injection filtering capabilities
• Implement additional authentication controls such as CAPTCHA or rate limiting to slow down automated attacks

# Example: Restrict access to the application using iptables
# Allow only trusted IP addresses to access the web application
iptables -A INPUT -p tcp --dport 80 -s 192.168.1.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP

# Enable Apache mod_security for SQL injection protection
sudo a2enmod security2
sudo systemctl restart apache2