CVE-2025-7132: Campcodes Payroll System SQL Injection

CVE-2025-7132 Overview

A critical SQL Injection vulnerability has been discovered in Campcodes Payroll Management System version 1.0. The vulnerability exists in the /ajax.php?action=save_payroll endpoint, where improper sanitization of the ID parameter allows attackers to inject malicious SQL commands. This flaw enables remote attackers to manipulate database queries without authentication, potentially leading to unauthorized data access, modification, or deletion of sensitive payroll information.

Critical Impact

Remote attackers can exploit this SQL Injection vulnerability to extract, modify, or delete sensitive payroll data including employee salaries, personal information, and financial records without authentication.

Affected Products

• Campcodes Payroll Management System 1.0

Discovery Timeline

• 2025-07-07 - CVE-2025-7132 published to NVD
• 2025-07-08 - Last updated in NVD database

Technical Details for CVE-2025-7132

Vulnerability Analysis

This SQL Injection vulnerability (CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component) affects the payroll saving functionality in the Campcodes Payroll Management System. The vulnerability is accessible remotely without any authentication requirements, making it particularly dangerous for exposed systems.

The ID parameter passed to the /ajax.php?action=save_payroll endpoint is not properly sanitized before being incorporated into SQL queries. This allows attackers to inject arbitrary SQL statements that will be executed by the database server. Given that this is a payroll management system, successful exploitation could expose highly sensitive employee financial data, including salary information, tax records, and personal identification details.

The exploit has been publicly disclosed, increasing the risk of opportunistic attacks against vulnerable installations. Organizations using this software should prioritize immediate remediation.

Root Cause

The root cause of this vulnerability is insufficient input validation and lack of parameterized queries in the application's database interaction layer. The ID parameter is directly concatenated into SQL statements without proper sanitization, escaping, or use of prepared statements. This classic SQL Injection pattern allows attackers to break out of the intended query structure and inject their own SQL commands.

Attack Vector

The attack vector is network-based, requiring no authentication or user interaction. An attacker can craft malicious HTTP requests to the /ajax.php?action=save_payroll endpoint with specially crafted ID parameter values containing SQL injection payloads. The attack can be executed remotely against any accessible instance of the vulnerable application.

Common exploitation techniques include UNION-based injection to extract data from other tables, boolean-based blind injection to enumerate database contents, and time-based blind injection when direct output is not available. Given the low attack complexity and lack of authentication requirements, automated exploitation tools could easily target this vulnerability at scale.

Detection Methods for CVE-2025-7132

Indicators of Compromise

• HTTP requests to /ajax.php?action=save_payroll containing SQL syntax in the ID parameter
• Database error messages in application logs indicating malformed queries
• Unusual database query patterns or execution times in database audit logs
• Unexpected data access or modifications in payroll-related database tables

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect SQL injection patterns in the ID parameter
• Enable detailed logging for requests to /ajax.php endpoints and monitor for suspicious payloads
• Implement database activity monitoring to detect anomalous query patterns
• Configure intrusion detection systems to alert on common SQL injection attack signatures

Monitoring Recommendations

• Monitor access logs for requests containing SQL keywords (SELECT, UNION, INSERT, DELETE, DROP) in URL parameters
• Set up alerts for database errors originating from the payroll management application
• Track authentication failures and unusual access patterns to payroll data
• Review database query logs for queries that deviate from expected application behavior

How to Mitigate CVE-2025-7132

Immediate Actions Required

• Restrict network access to the Campcodes Payroll Management System to trusted IP addresses only
• Deploy a Web Application Firewall with SQL injection protection rules in front of the application
• Implement network segmentation to isolate the payroll system from general network access
• Audit database logs to identify any potential exploitation attempts

Patch Information

No official vendor patch information is currently available for this vulnerability. Organizations should monitor the VulDB entry and the vendor website for updates. Additional technical details are available in the GitHub Issue Discussion.

Workarounds

• Implement input validation on the ID parameter to accept only numeric values
• Deploy a reverse proxy or WAF to filter malicious requests before they reach the application
• Restrict access to the application to internal networks only until a patch is available
• Consider taking the system offline if the risk cannot be adequately mitigated

# Example WAF rule to block SQL injection attempts (ModSecurity format)
SecRule ARGS:ID "@detectSQLi" \
    "id:100001,\
    phase:2,\
    deny,\
    status:403,\
    msg:'SQL Injection Attempt Detected in ID Parameter',\
    logdata:'Matched Data: %{MATCHED_VAR}'"