CVE-2025-0341: Campcodes Lab Management System RCE Flaw

CVE-2025-0341 Overview

A critical unrestricted file upload vulnerability has been discovered in CampCodes Computer Laboratory Management System version 1.0. The vulnerability exists in the /class/edit/edit endpoint, where improper handling of the e_photo parameter allows attackers to upload arbitrary files to the server. This flaw can be exploited remotely by authenticated users, potentially leading to remote code execution through the upload of malicious scripts such as web shells.

Critical Impact

Successful exploitation allows attackers to upload arbitrary files including malicious web shells, enabling remote code execution and full system compromise of affected servers.

Affected Products

• CampCodes Computer Laboratory Management System 1.0
• Web servers hosting the vulnerable application
• Systems with network exposure to the application's file upload functionality

Discovery Timeline

• 2025-01-09 - CVE-2025-0341 published to NVD
• 2025-03-04 - Last updated in NVD database

Technical Details for CVE-2025-0341

Vulnerability Analysis

The vulnerability resides in the file upload functionality of the Computer Laboratory Management System's edit feature. The application fails to properly validate and restrict the types of files that can be uploaded through the e_photo parameter. This lack of input validation allows an attacker to bypass intended file type restrictions and upload executable files, such as PHP scripts or web shells, to the web server.

The weakness is classified under CWE-434 (Unrestricted Upload of File with Dangerous Type) and CWE-284 (Improper Access Control). When combined, these weaknesses allow authenticated users to upload files that should be restricted, potentially leading to server-side code execution.

Root Cause

The root cause stems from insufficient file upload validation in the /class/edit/edit endpoint. The application does not properly verify the file extension, MIME type, or content of uploaded files through the e_photo parameter. This allows attackers to upload files with executable extensions (such as .php, .phtml, or .asp) that can be interpreted by the web server, bypassing any intended restrictions on image-only uploads.

Attack Vector

The attack can be executed remotely over the network by any user with low-level authentication privileges. The attacker exploits the vulnerable file upload mechanism by crafting a malicious request to the /class/edit/edit endpoint, manipulating the e_photo parameter to include an executable file instead of a legitimate image.

Once the malicious file is uploaded, the attacker can access it directly through the web server, triggering code execution. This enables the attacker to establish a web shell, execute arbitrary system commands, exfiltrate data, or pivot to other systems on the network.

The vulnerability mechanism involves bypassing file type validation through the e_photo parameter in the edit functionality. Attackers can submit files with dangerous extensions that are then stored in a web-accessible directory. For detailed technical analysis and proof-of-concept information, refer to the GitHub PoC Repository.

Detection Methods for CVE-2025-0341

Indicators of Compromise

• Presence of unexpected files with executable extensions (.php, .phtml, .asp, .jsp) in upload directories
• Web server access logs showing requests to unusual file paths within the application's upload directories
• Anomalous file creation timestamps in directories associated with the photo upload feature
• Network traffic patterns indicating web shell communication or reverse shell connections

Detection Strategies

• Monitor file system events for creation of executable files in web-accessible upload directories
• Implement web application firewall (WAF) rules to detect and block file upload requests containing executable content
• Deploy endpoint detection solutions to identify web shell artifacts and suspicious process spawning from web server processes
• Analyze HTTP POST requests to /class/edit/edit for anomalous file extensions or MIME type mismatches

Monitoring Recommendations

• Enable verbose logging for the web application and review logs for suspicious upload activity targeting the edit functionality
• Configure file integrity monitoring (FIM) on upload directories to detect unauthorized file additions
• Monitor outbound network connections from the web server for potential command-and-control communication
• Implement real-time alerting for any files with executable extensions created in upload directories

How to Mitigate CVE-2025-0341

Immediate Actions Required

• Restrict network access to the vulnerable application until a patch is available or workarounds are implemented
• Review upload directories for any unauthorized or suspicious files and remove them immediately
• Implement strict file type validation at both client and server side for all upload functionality
• Consider temporarily disabling the edit functionality if not critical to operations

Patch Information

As of the last update on 2025-03-04, no official vendor patch has been released for this vulnerability. Organizations using CampCodes Computer Laboratory Management System should monitor the CampCodes website for security updates and patch releases. In the absence of an official fix, implementing the workarounds below is strongly recommended.

Workarounds

• Implement server-side file type validation by checking file extensions, MIME types, and magic bytes
• Configure the web server to prevent execution of scripts in upload directories using .htaccess or equivalent configuration
• Store uploaded files outside the web root and serve them through a handler that strips executable content
• Implement a whitelist of allowed file extensions (e.g., .jpg, .jpeg, .png, .gif only) and reject all others

# Apache .htaccess configuration to disable script execution in upload directory
# Place this file in the upload directory
<Directory /path/to/upload/directory>
    # Disable PHP execution
    php_admin_flag engine Off
    
    # Disable script execution for all handlers
    RemoveHandler .php .phtml .php3 .php4 .php5 .phps
    RemoveType .php .phtml .php3 .php4 .php5 .phps
    
    # Deny direct access to potentially dangerous file types
    <FilesMatch "\.(php|phtml|php3|php4|php5|phps|asp|aspx|jsp|cgi|pl)$">
        Require all denied
    </FilesMatch>
</Directory>