CVE-2025-6957: Campcodes Employee Management SQL Injection

CVE-2025-6957 Overview

A critical SQL injection vulnerability has been identified in Campcodes Employee Management System version 1.0. The vulnerability exists in the /process/eprocess.php file, where improper handling of the mailuid parameter allows attackers to inject malicious SQL queries. This flaw can be exploited remotely without authentication, potentially compromising the confidentiality, integrity, and availability of the underlying database and application data.

Critical Impact

Unauthenticated attackers can remotely exploit this SQL injection vulnerability to extract sensitive employee data, modify database records, or potentially compromise the entire application through malicious SQL queries.

Affected Products

• Campcodes Employee Management System 1.0

Discovery Timeline

• 2025-07-01 - CVE-2025-6957 published to NVD
• 2025-07-07 - Last updated in NVD database

Technical Details for CVE-2025-6957

Vulnerability Analysis

This SQL injection vulnerability stems from improper input validation in the Campcodes Employee Management System. The affected endpoint /process/eprocess.php accepts user-controlled input through the mailuid parameter without adequate sanitization or parameterized query implementation. When this parameter is processed, malicious SQL statements can be injected and executed against the backend database.

The vulnerability is remotely exploitable and requires no authentication or user interaction, making it particularly dangerous for internet-facing deployments. An attacker can leverage this flaw to bypass authentication mechanisms, extract sensitive employee records including personal information, modify or delete database entries, and potentially gain further access to the underlying system depending on database privileges.

Root Cause

The root cause of this vulnerability is a classic injection flaw (CWE-74) where user-supplied input from the mailuid parameter is directly concatenated into SQL queries without proper sanitization or the use of prepared statements. The application fails to validate, filter, or escape special characters in the input, allowing attackers to break out of the intended query structure and inject arbitrary SQL commands.

Attack Vector

The attack is network-based and can be initiated remotely against any accessible instance of the vulnerable application. An attacker sends a crafted HTTP request to the /process/eprocess.php endpoint with a malicious payload in the mailuid parameter. The injected SQL is then executed by the database server with the privileges of the application's database connection.

The exploitation is straightforward and requires low complexity, as the vulnerable parameter directly accepts and processes the malicious input. No authentication is required, and the exploit has been publicly disclosed, increasing the risk of widespread exploitation. For technical details on the exploitation methodology, refer to the GitHub PoC Issue Discussion and VulDB CTI entry.

Detection Methods for CVE-2025-6957

Indicators of Compromise

• HTTP requests to /process/eprocess.php containing SQL syntax characters in the mailuid parameter such as single quotes, double dashes, semicolons, or UNION keywords
• Unusual database query patterns or errors logged by the application server
• Unexpected database operations including bulk data extraction or unauthorized record modifications
• Web server logs showing repeated requests to the affected endpoint with varying parameter payloads

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block SQL injection patterns targeting the mailuid parameter
• Deploy application-layer intrusion detection signatures that monitor for SQL injection attempts against PHP endpoints
• Enable detailed database query logging to identify anomalous or malformed queries originating from the application
• Configure alerting for database errors that may indicate injection attempts such as syntax errors or privilege violations

Monitoring Recommendations

• Monitor HTTP traffic for requests containing SQL injection payloads in POST/GET parameters to /process/eprocess.php
• Review database audit logs for unauthorized SELECT, INSERT, UPDATE, or DELETE operations
• Track failed authentication attempts that may indicate attackers leveraging SQL injection to bypass login mechanisms
• Alert on high-volume requests to the affected endpoint which may indicate automated exploitation attempts

How to Mitigate CVE-2025-6957

Immediate Actions Required

• Restrict network access to the Campcodes Employee Management System to trusted IP addresses only
• Implement a Web Application Firewall (WAF) with SQL injection protection rules as an interim measure
• Review and audit database user privileges to minimize the impact of potential exploitation
• Monitor logs for signs of exploitation attempts or data exfiltration

Patch Information

As of the last update on 2025-07-07, no official patch or vendor advisory has been released by Campcodes. Organizations should monitor the Campcodes website for security updates. In the absence of an official fix, implementing the workarounds below is strongly recommended.

Workarounds

• Deploy a Web Application Firewall (WAF) configured to filter SQL injection attacks targeting the mailuid parameter
• Restrict access to the /process/eprocess.php endpoint through network segmentation or access control lists
• If source code access is available, implement prepared statements or parameterized queries for all database interactions
• Consider disabling or removing the affected functionality until an official patch is available
• Implement database-level controls such as reducing application database user privileges and enabling query auditing

# Example WAF rule to block SQL injection attempts (ModSecurity)
SecRule ARGS:mailuid "@detectSQLi" \
    "id:100001,\
    phase:2,\
    deny,\
    status:403,\
    log,\
    msg:'SQL Injection attempt blocked in mailuid parameter',\
    tag:'CVE-2025-6957'"