CVE-2025-2677: Bank Locker Management System SQLi Flaw

CVE-2025-2677 Overview

A critical SQL Injection vulnerability has been identified in PHPGurukul Bank Locker Management System version 1.0. The vulnerability exists in the /changeidproof.php file where the editid parameter is not properly sanitized before being used in SQL queries. This allows remote attackers to manipulate database queries through specially crafted input, potentially leading to unauthorized data access, modification, or deletion.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to extract sensitive banking and customer data, modify locker records, or compromise the entire database without authentication.

Affected Products

• PHPGurukul Bank Locker Management System 1.0
• Web applications using the vulnerable /changeidproof.php endpoint
• Systems with unpatched versions of the Bank Locker Management System

Discovery Timeline

• 2025-03-24 - CVE-2025-2677 published to NVD
• 2025-06-04 - Last updated in NVD database

Technical Details for CVE-2025-2677

Vulnerability Analysis

This SQL Injection vulnerability in PHPGurukul Bank Locker Management System stems from insufficient input validation in the /changeidproof.php file. The editid parameter accepts user-supplied input that is directly incorporated into SQL queries without proper sanitization or parameterized query handling. This classic injection pattern allows attackers to break out of the intended query context and execute arbitrary SQL commands against the backend 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). These weaknesses indicate that the application fails to neutralize special characters that could modify the intended SQL command structure.

Root Cause

The root cause of this vulnerability is the lack of input sanitization and the failure to use prepared statements or parameterized queries when processing the editid parameter. The application directly concatenates user input into SQL query strings, allowing malicious SQL syntax to be interpreted by the database engine as part of the query logic rather than as data.

Attack Vector

The attack can be initiated remotely over the network without requiring any authentication or user interaction. An attacker can craft malicious HTTP requests to the /changeidproof.php endpoint with SQL injection payloads in the editid parameter. The exploit has been publicly disclosed, increasing the risk of exploitation in the wild.

Typical attack scenarios include:

• Data Exfiltration: Using UNION-based or blind SQL injection techniques to extract sensitive customer information, locker details, and administrative credentials
• Authentication Bypass: Manipulating queries to bypass login mechanisms and gain unauthorized access
• Data Manipulation: Modifying or deleting locker records and customer data
• Privilege Escalation: Extracting administrator credentials or modifying user roles

For detailed technical information about this vulnerability, refer to the GitHub Issue Report and the VulDB CVE Analysis.

Detection Methods for CVE-2025-2677

Indicators of Compromise

• Unusual or malformed requests to /changeidproof.php containing SQL syntax characters such as single quotes, double dashes, or UNION keywords in the editid parameter
• Database error messages appearing in application logs indicating SQL syntax errors
• Unexpected database query patterns or elevated query execution times
• Evidence of data extraction attempts in web server access logs

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block SQL injection patterns in HTTP requests
• Implement application-level logging to capture all requests to the vulnerable endpoint with full parameter values
• Configure database activity monitoring to alert on unusual query patterns, especially those containing UNION, SELECT, or comment sequences
• Use intrusion detection systems (IDS) with signatures for common SQL injection attack patterns

Monitoring Recommendations

• Monitor web server access logs for requests to /changeidproof.php with suspicious parameter values
• Enable database audit logging to track all queries executed against sensitive tables
• Set up alerts for multiple failed or malformed requests from the same IP address
• Review application error logs for database-related exceptions that may indicate injection attempts

How to Mitigate CVE-2025-2677

Immediate Actions Required

• Restrict access to the /changeidproof.php endpoint using network-level controls or web server configuration until a patch is applied
• Implement input validation and sanitization for the editid parameter at the application layer
• Deploy WAF rules to block requests containing SQL injection patterns
• Review database access logs for signs of prior exploitation

Patch Information

At the time of this analysis, no official vendor patch has been released for this vulnerability. Organizations using PHPGurukul Bank Locker Management System should monitor the PHPGurukul website for security updates and patch announcements. Additional vulnerability details are available at VulDB #300694.

Workarounds

• Implement prepared statements and parameterized queries in the /changeidproof.php file to prevent SQL injection
• Apply strict input validation to ensure the editid parameter only accepts expected numeric values
• Use web application firewalls to filter malicious SQL injection payloads
• Consider temporarily disabling the vulnerable functionality until a proper fix is implemented

# Apache configuration to restrict access to vulnerable endpoint
<Location /changeidproof.php>
    Order deny,allow
    Deny from all
    Allow from 192.168.1.0/24
</Location>