CVE-2024-2268: Online Bookstore Website RCE Vulnerability

CVE-2024-2268 Overview

A critical unrestricted file upload vulnerability has been identified in keerti1924 Online-Book-Store-Website version 1.0. The vulnerability exists in the /product_update.php?update=1 endpoint, where improper validation of the update_image parameter allows attackers to upload arbitrary files to the server. This security flaw can be exploited remotely without authentication, potentially leading to complete system compromise through webshell deployment or other malicious file uploads.

Critical Impact
Remote attackers can upload malicious files including webshells, enabling full server compromise, data theft, and persistent backdoor access without any authentication requirements.

Affected Products

keerti1924 Online-Book-Store-Website version 1.0
Systems running the vulnerable /product_update.php endpoint
Web servers hosting the Online Bookstore Website application

Discovery Timeline

2024-03-07 - CVE-2024-2268 published to NVD
2025-03-12 - Last updated in NVD database

Technical Details for CVE-2024-2268

Vulnerability Analysis

This vulnerability is classified as CWE-434 (Unrestricted Upload of File with Dangerous Type). The affected application fails to properly validate uploaded files through the product update functionality. When processing image uploads via the update_image parameter, the application does not verify the file type, extension, or content, allowing attackers to upload executable files such as PHP webshells.

The exploit has been publicly disclosed and documented, making this vulnerability particularly dangerous for any exposed instances of the application. The vendor was contacted about this disclosure but did not respond, leaving users without an official patch.

Root Cause

The root cause of this vulnerability lies in the absence of proper file upload validation mechanisms in the /product_update.php file. The application accepts any file type submitted through the update_image parameter without implementing essential security controls such as:

File extension whitelisting
MIME type verification
File content validation (magic byte checking)
Filename sanitization
Upload directory restrictions

This lack of input validation allows attackers to bypass intended restrictions and upload malicious executable files to the web server.

Attack Vector

The attack can be executed remotely over the network without requiring any user interaction or prior authentication. An attacker can craft a malicious HTTP POST request to the /product_update.php?update=1 endpoint, including a PHP webshell or other malicious file disguised or submitted through the update_image parameter.

The exploitation process involves:

Crafting a malicious file (e.g., PHP webshell) with appropriate payload
Submitting the file via the vulnerable product update form
Identifying the upload directory where files are stored
Accessing the uploaded malicious file directly via web browser
Executing arbitrary commands on the server through the webshell

For technical details on the exploitation mechanism, refer to the GitHub PoC Repository.

Detection Methods for CVE-2024-2268

Indicators of Compromise

Unexpected files with executable extensions (.php, .phtml, .php5) in upload directories
Web server access logs showing requests to /product_update.php with suspicious file uploads
Presence of webshell signatures in uploaded content directories
Unusual outbound network connections from the web server
New or modified files in web-accessible directories with recent timestamps

Detection Strategies

Monitor HTTP POST requests to /product_update.php for non-image file uploads
Implement file integrity monitoring on upload directories to detect unauthorized file additions
Deploy web application firewalls (WAF) with rules to detect malicious file upload attempts
Configure intrusion detection systems to alert on webshell patterns and signatures
Analyze web server logs for sequential access patterns: upload followed by direct file access

Monitoring Recommendations

Enable detailed logging for the /product_update.php endpoint and associated upload directories
Set up alerts for any file creation events in web-accessible directories with executable extensions
Monitor for process spawning from web server processes (potential webshell execution)
Implement network monitoring for command-and-control traffic originating from the web server

How to Mitigate CVE-2024-2268

Immediate Actions Required

Remove or disable the /product_update.php file if not essential for operations
Restrict access to the product update functionality using authentication and IP whitelisting
Implement web application firewall rules to block suspicious file upload attempts
Audit upload directories for any existing malicious files and remove them
Consider taking the application offline until proper file upload validation can be implemented

Patch Information

No official patch has been released by the vendor. The vendor was contacted about this disclosure but did not respond. Organizations using this application should implement manual mitigations or consider migrating to a maintained alternative. For additional vulnerability context, refer to VulDB #256038.

Workarounds

Implement server-side file upload validation that checks file extensions against a whitelist (e.g., only .jpg, .png, .gif)
Add MIME type verification to ensure uploaded files match expected image types
Store uploaded files outside the web root to prevent direct execution
Configure the web server to disable script execution in upload directories
Implement authentication requirements for the product update functionality

bash

# Apache configuration to disable PHP execution in upload directories
# Add to .htaccess in the uploads folder
<Directory "/var/www/html/uploads">
    php_admin_flag engine Off
    RemoveHandler .php .phtml .php3 .php4 .php5
    AddType text/plain .php .phtml .php3 .php4 .php5
</Directory>