CVE-2025-6959: Employee Management System SQLi Vulnerability

CVE-2025-6959 Overview

A critical SQL injection vulnerability has been identified in Campcodes Employee Management System version 1.0. The vulnerability exists in the /eloginwel.php file where improper handling of the ID parameter allows attackers to inject malicious SQL queries. This flaw can be exploited remotely without authentication, potentially enabling unauthorized access to sensitive employee data, database manipulation, or complete system compromise.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to extract sensitive employee information, modify database records, or potentially gain unauthorized access to the underlying system through the vulnerable ID parameter in the login workflow.

Affected Products

• Campcodes Employee Management System 1.0

Discovery Timeline

• 2025-07-01 - CVE-2025-6959 published to NVD
• 2025-07-07 - Last updated in NVD database

Technical Details for CVE-2025-6959

Vulnerability Analysis

This SQL injection vulnerability affects the /eloginwel.php endpoint in Campcodes Employee Management System. The vulnerability stems from the application's failure to properly sanitize user-supplied input in the ID parameter before incorporating it into SQL queries. This classic injection attack pattern enables remote attackers to manipulate database queries, potentially accessing, modifying, or deleting sensitive employee records stored within the system.

The exploit has been publicly disclosed, increasing the risk of widespread exploitation. Organizations running this employee management system should treat this as a high-priority security concern given the sensitive nature of employee data typically stored in such systems.

Root Cause

The root cause of this vulnerability is improper input validation and lack of parameterized queries (CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component). The ID parameter passed to /eloginwel.php is directly concatenated into SQL statements without proper sanitization or the use of prepared statements. This allows attackers to break out of the intended query context and inject arbitrary SQL commands.

Attack Vector

The attack can be executed remotely over the network without requiring any authentication or user interaction. An attacker crafts a malicious HTTP request to the /eloginwel.php endpoint, manipulating the ID parameter to include SQL injection payloads. Common attack techniques include:

• Union-based injection to extract data from other database tables
• Error-based injection to enumerate database structure through error messages
• Boolean-based blind injection to infer data through application behavior changes
• Time-based blind injection to extract data when no visible output is available

The vulnerability allows attackers to bypass authentication mechanisms, extract sensitive employee information such as personal data and credentials, modify or delete database records, and potentially execute operating system commands if database permissions allow.

Detection Methods for CVE-2025-6959

Indicators of Compromise

• Unusual SQL error messages appearing in web server logs containing references to /eloginwel.php
• HTTP requests to /eloginwel.php containing suspicious characters in the ID parameter such as single quotes, semicolons, or SQL keywords
• Database audit logs showing unexpected queries or access patterns originating from the web application
• Anomalous data extraction or bulk read operations against employee tables

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block SQL injection patterns targeting the ID parameter
• Monitor web server access logs for requests to /eloginwel.php with abnormal parameter values or encoding
• Enable database query logging and alert on queries containing injection signatures
• Deploy intrusion detection systems with signatures for common SQL injection attack patterns

Monitoring Recommendations

• Configure real-time alerting for any requests to /eloginwel.php containing SQL metacharacters
• Establish baseline metrics for database query volume and alert on deviations
• Monitor for unauthorized data access or export from employee-related database tables
• Review authentication logs for suspicious login patterns or credential enumeration attempts

How to Mitigate CVE-2025-6959

Immediate Actions Required

• Restrict access to the Campcodes Employee Management System to trusted networks only until patched
• Implement input validation at the application or WAF level to filter SQL injection attempts
• Review and audit database permissions to minimize potential impact of successful exploitation
• Back up all employee data and database contents before implementing changes

Patch Information

No official vendor patch information is currently available for this vulnerability. Organizations should monitor the Campcodes website for security updates. Additional technical details about this vulnerability can be found in the GitHub PoC Issue #37 and VulDB entry #314496.

Workarounds

• Deploy a Web Application Firewall with SQL injection detection rules specifically protecting the /eloginwel.php endpoint
• Implement network-level access controls to restrict access to the application from untrusted sources
• Consider disabling or removing the affected /eloginwel.php functionality if not critical to operations
• If source code access is available, implement parameterized queries or prepared statements for all database interactions involving user input

# Example WAF rule to block SQL injection attempts (ModSecurity format)
SecRule ARGS:ID "@detectSQLi" \
    "id:100001,\
    phase:2,\
    deny,\
    status:403,\
    log,\
    msg:'SQL Injection attempt blocked on eloginwel.php ID parameter',\
    tag:'CVE-2025-6959'"