CVE-2025-7217: Campcodes Payroll Management SQLI Flaw

CVE-2025-7217 Overview

A critical SQL injection vulnerability has been identified in Campcodes Payroll Management System version 1.0. This vulnerability affects the /ajax.php?action=save_position endpoint, where improper handling of the ID parameter allows remote attackers to inject malicious SQL commands. The vulnerability can be exploited remotely without authentication, potentially allowing unauthorized access to sensitive payroll data, modification of database records, or complete database compromise.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to extract sensitive employee and payroll information, modify salary records, or potentially gain full control of the underlying database server.

Affected Products

• Campcodes Payroll Management System 1.0

Discovery Timeline

• 2025-07-09 - CVE-2025-7217 published to NVD
• 2025-07-11 - Last updated in NVD database

Technical Details for CVE-2025-7217

Vulnerability Analysis

This SQL injection vulnerability exists in the Campcodes Payroll Management System due to insufficient input validation and sanitization of user-supplied data. The affected endpoint /ajax.php?action=save_position processes the ID parameter without properly escaping or parameterizing the input before incorporating it into SQL queries. This allows attackers to manipulate the query logic by injecting SQL syntax through the ID parameter.

The vulnerability is network-accessible and requires no authentication or user interaction to exploit, making it particularly dangerous for internet-facing deployments. Successful exploitation could lead to unauthorized data access, data manipulation, or complete database compromise depending on the database privileges of the application.

Root Cause

The root cause of this vulnerability is improper input validation and the use of unsanitized user input in SQL query construction (CWE-74: Injection). The application fails to implement prepared statements or parameterized queries when processing the ID parameter in the save_position action, allowing attackers to break out of the intended query context and execute arbitrary SQL commands.

Attack Vector

The attack is network-based and targets the vulnerable AJAX endpoint. An attacker can craft malicious HTTP requests containing SQL injection payloads in the ID parameter. The vulnerable endpoint accepts POST or GET requests to /ajax.php?action=save_position, where the ID parameter value is directly concatenated into SQL queries without proper sanitization.

The vulnerability allows for various SQL injection techniques including:

• Union-based injection - Extracting data from other database tables
• Error-based injection - Extracting information through database error messages
• Blind injection - Inferring database contents through true/false responses
• Time-based injection - Extracting data by observing response delays

For technical details on the vulnerability, see the GitHub Issue Report and VulDB entry #315166.

Detection Methods for CVE-2025-7217

Indicators of Compromise

• Unusual or malformed requests to /ajax.php?action=save_position containing SQL syntax characters such as single quotes, double quotes, semicolons, or SQL keywords
• Database error messages in application logs indicating SQL syntax errors
• Unexpected database queries or access patterns originating from the web application
• Evidence of data exfiltration or unauthorized modifications to payroll records

Detection Strategies

• Implement web application firewall (WAF) rules to detect SQL injection patterns targeting the ajax.php endpoint
• Monitor HTTP request logs for suspicious ID parameter values containing SQL metacharacters or keywords like UNION, SELECT, INSERT, DROP, or --
• Enable database query logging and alert on anomalous query patterns or syntax errors
• Deploy intrusion detection systems (IDS) with signatures for common SQL injection attack patterns

Monitoring Recommendations

• Set up real-time alerting for any requests to /ajax.php?action=save_position containing potential SQL injection payloads
• Monitor database audit logs for unauthorized data access or privilege escalation attempts
• Implement application performance monitoring to detect unusual response times that may indicate time-based SQL injection attempts
• Review web server access logs regularly for reconnaissance activity targeting the vulnerable endpoint

How to Mitigate CVE-2025-7217

Immediate Actions Required

• Restrict network access to the Campcodes Payroll Management System to trusted IP addresses only
• Implement a web application firewall (WAF) with SQL injection protection rules in front of the application
• Consider taking the application offline if it contains sensitive data and cannot be adequately protected
• Review database logs for evidence of prior exploitation and assess potential data compromise

Patch Information

At the time of this publication, no official vendor patch has been released for this vulnerability. Organizations using Campcodes Payroll Management System 1.0 should monitor the CampCodes website and VulDB entry for updates regarding security patches or new versions that address this vulnerability.

Workarounds

• Deploy a web application firewall (WAF) configured to block SQL injection attempts targeting the vulnerable endpoint
• Implement network-level access controls to restrict access to the application from untrusted networks
• If source code access is available, implement parameterized queries or prepared statements for all database interactions in ajax.php
• Consider disabling or restricting access to the save_position action if it is not business-critical
• Apply the principle of least privilege to the database user account used by the application to limit potential damage from exploitation

# Example: Block access to vulnerable endpoint using .htaccess
<Files "ajax.php">
    <If "%{QUERY_STRING} =~ /action=save_position/">
        Require ip 192.168.1.0/24
        # Only allow access from trusted internal network
    </If>
</Files>