CVE-2025-2682: Bank Locker Management System SQLi Flaw

CVE-2025-2682 Overview

A critical SQL injection vulnerability has been discovered in PHPGurukul Bank Locker Management System version 1.0. The vulnerability exists in the /edit-subadmin.php file, specifically in the handling of the mobilenumber parameter. An attacker can exploit this flaw to inject malicious SQL queries remotely without authentication, potentially leading to unauthorized data access, data manipulation, or complete database compromise.

Critical Impact

This SQL injection vulnerability allows remote attackers to manipulate database queries through the mobilenumber parameter in /edit-subadmin.php?said=3, potentially exposing sensitive banking and customer information stored in the Bank Locker Management System.

Affected Products

• PHPGurukul Bank Locker Management System 1.0
• Installations with /edit-subadmin.php functionality enabled
• Systems with network-accessible web interfaces

Discovery Timeline

• 2025-03-24 - CVE-2025-2682 published to NVD
• 2025-03-27 - Last updated in NVD database

Technical Details for CVE-2025-2682

Vulnerability Analysis

This vulnerability is classified under CWE-89 (Improper Neutralization of Special Elements used in an SQL Command) and CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component). The flaw resides in the /edit-subadmin.php endpoint where the mobilenumber parameter is processed without adequate input validation or sanitization before being incorporated into SQL queries.

The Bank Locker Management System fails to properly validate user-supplied input in the sub-administrator editing functionality. When a request is made to /edit-subadmin.php?said=3 with a manipulated mobilenumber value, the application directly concatenates or interpolates this input into SQL statements. This allows attackers to inject arbitrary SQL commands that execute with the privileges of the database user configured for the application.

Root Cause

The root cause of CVE-2025-2682 is the failure to implement parameterized queries or prepared statements when handling the mobilenumber parameter. The application directly uses user-supplied input in SQL query construction without proper escaping, validation, or the use of an ORM that would abstract direct SQL execution. This is a fundamental secure coding violation that enables classic SQL injection attacks.

Attack Vector

The attack can be initiated remotely over the network without requiring any authentication or user interaction. An attacker needs only to craft a malicious HTTP request to the vulnerable endpoint /edit-subadmin.php with a specially crafted mobilenumber parameter containing SQL injection payloads. The attack surface includes:

• Direct manipulation of the mobilenumber parameter via GET or POST requests
• Potential for time-based blind SQL injection if direct output is not visible
• Possibility of UNION-based injection to extract data from other tables
• Risk of stacked queries if the database configuration permits them

The vulnerability has been publicly disclosed and documented in the GitHub CVE Issue Discussion, increasing the likelihood of exploitation attempts.

Detection Methods for CVE-2025-2682

Indicators of Compromise

• Unusual or malformed requests to /edit-subadmin.php containing SQL syntax characters such as single quotes ('), double dashes (--), semicolons (;), or UNION keywords in the mobilenumber parameter
• Database error messages appearing in web server logs indicating syntax errors or unexpected query behavior
• Abnormal database query patterns including unexpectedly long queries or queries accessing tables beyond normal application scope
• Evidence of data exfiltration or unauthorized changes in the database audit logs

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block common SQL injection patterns in requests to /edit-subadmin.php
• Implement application-level logging to capture and alert on requests containing SQL injection payloads in the mobilenumber field
• Configure database activity monitoring to detect unusual query patterns or unauthorized data access attempts
• Enable intrusion detection system (IDS) signatures for SQL injection attack patterns

Monitoring Recommendations

• Monitor web server access logs for repeated requests to /edit-subadmin.php with varying parameter values that may indicate injection testing
• Set up alerting for HTTP 500 errors or database exceptions originating from the Bank Locker Management System
• Track database query execution times to identify potential time-based blind SQL injection attempts
• Review database user activity logs for queries that deviate from normal application behavior

How to Mitigate CVE-2025-2682

Immediate Actions Required

• Restrict network access to the Bank Locker Management System to trusted IP addresses only until a patch is available
• Implement a Web Application Firewall (WAF) rule to block requests containing SQL injection patterns in the mobilenumber parameter
• Disable or restrict access to /edit-subadmin.php if the sub-administrator editing functionality is not critical
• Review database user permissions to ensure the application uses a least-privilege account that cannot perform administrative operations

Patch Information

At the time of this publication, no official vendor patch has been released for PHPGurukul Bank Locker Management System version 1.0. Organizations should monitor the PHP Gurukul Blog for security updates. Additional technical details about this vulnerability can be found in the VulDB #300699 entry.

Workarounds

• Implement server-side input validation to sanitize the mobilenumber parameter, allowing only numeric characters
• Modify the vulnerable PHP code to use prepared statements with parameterized queries instead of direct SQL concatenation
• Deploy virtual patching through a WAF or reverse proxy to filter malicious input before it reaches the application
• Consider migrating to a more actively maintained bank locker management solution if vendor support is unavailable

# Configuration example - Apache ModSecurity WAF rule to block SQL injection attempts
SecRule ARGS:mobilenumber "@detectSQLi" \
    "id:1001,\
    phase:2,\
    block,\
    log,\
    msg:'SQL Injection attempt detected in mobilenumber parameter - CVE-2025-2682',\
    tag:'CVE-2025-2682',\
    severity:'CRITICAL'"