CVE-2025-9504: Campcodes Loan Management System SQLi Flaw

CVE-2025-9504 Overview

A SQL injection vulnerability has been identified in Campcodes Online Loan Management System version 1.0. This vulnerability exists in the /ajax.php?action=save_plan endpoint, where improper handling of the ID parameter allows attackers to inject malicious SQL statements. The attack can be executed remotely without authentication, potentially compromising database integrity and confidentiality.

Critical Impact

This SQL injection vulnerability enables remote attackers to manipulate database queries, potentially leading to unauthorized data access, data modification, or complete database compromise in financial loan management systems.

Affected Products

• Campcodes Online Loan Management System 1.0

Discovery Timeline

• 2025-08-27 - CVE-2025-9504 published to NVD
• 2025-09-02 - Last updated in NVD database

Technical Details for CVE-2025-9504

Vulnerability Analysis

This vulnerability stems from insufficient input validation in the loan plan management functionality of Campcodes Online Loan Management System. The affected endpoint /ajax.php?action=save_plan processes the ID parameter without proper sanitization, creating a classic SQL injection attack surface. Attackers can craft malicious requests that inject arbitrary SQL commands into database queries, bypassing intended application logic.

Given the nature of the application as a loan management system, successful exploitation could expose sensitive financial data including loan records, customer information, payment histories, and potentially authentication credentials stored in the database.

Root Cause

The root cause is categorized under CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component). The application fails to properly sanitize or parameterize user-supplied input in the ID parameter before incorporating it into SQL queries. This lack of input validation allows special SQL characters and commands to be interpreted by the database engine rather than treated as literal data values.

Attack Vector

The vulnerability is exploitable over the network with no authentication required. An attacker can send crafted HTTP requests to the vulnerable endpoint containing SQL injection payloads within the ID parameter. The exploit has been publicly disclosed and documented, increasing the risk of widespread exploitation. Attack complexity is low, meaning attackers do not need specialized conditions or techniques to successfully exploit this vulnerability.

The exploitation method targets the save_plan action in the AJAX handler, where loan plan data is processed. By manipulating the ID parameter, attackers can extract data from other database tables, modify existing records, or potentially escalate privileges depending on database configuration and permissions.

For technical details about this vulnerability, refer to the GitHub Issue documenting this CVE and VulDB entry #321487.

Detection Methods for CVE-2025-9504

Indicators of Compromise

• Unusual SQL syntax patterns in web server access logs targeting /ajax.php?action=save_plan
• Abnormal database query execution times or errors in database logs
• Unexpected data modifications in loan plan records or other database tables
• HTTP requests containing SQL keywords (SELECT, UNION, INSERT, DROP) in the ID parameter

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect SQL injection patterns in requests to /ajax.php
• Implement database activity monitoring to detect anomalous query patterns or unauthorized data access
• Configure intrusion detection systems (IDS) to alert on SQL injection attack signatures targeting the affected endpoint
• Review web server logs for suspicious requests containing encoded characters or SQL syntax in the ID parameter

Monitoring Recommendations

• Enable detailed logging for all requests to /ajax.php endpoints
• Monitor database query logs for UNION-based, error-based, or time-based SQL injection attempts
• Set up alerts for failed authentication attempts that may indicate credential extraction via SQL injection
• Track data export volumes and access patterns for anomalies that could indicate data exfiltration

How to Mitigate CVE-2025-9504

Immediate Actions Required

• Restrict access to the /ajax.php?action=save_plan endpoint using network-level controls
• Implement input validation to reject requests containing SQL metacharacters in the ID parameter
• Deploy WAF rules to block SQL injection attack patterns targeting the vulnerable endpoint
• Consider temporarily disabling the affected loan plan functionality until a proper fix is applied

Patch Information

No official vendor patch has been released for this vulnerability at the time of publication. Organizations using Campcodes Online Loan Management System 1.0 should contact the vendor at CampCodes for remediation guidance and monitor for security updates. The vulnerability has been documented in VulDB Submission #635445.

Workarounds

• Implement prepared statements with parameterized queries in the affected PHP code to prevent SQL injection
• Add server-side input validation to sanitize the ID parameter, allowing only numeric values
• Deploy a reverse proxy with SQL injection filtering capabilities in front of the application
• Limit database user privileges for the application to reduce the impact of successful exploitation
• Consider isolating the vulnerable application in a network segment with restricted database access

# Example: Apache mod_security rule to block SQL injection attempts
SecRule REQUEST_URI "@contains /ajax.php" "chain,id:1001,phase:2,deny,status:403,msg:'SQL Injection Attempt Blocked'"
SecRule ARGS:ID "@detectSQLi" "t:none,t:urlDecodeUni"