CVE-2024-9038: Codezips Shopping Portal RCE Vulnerability

CVE-2024-9038 Overview

CVE-2024-9038 is an unrestricted file upload vulnerability [CWE-434] in Codezips Online Shopping Portal 1.0. The flaw resides in the insert-product.php script, where the productimage1, productimage2, and productimage3 parameters accept attacker-controlled files without proper validation. Remote attackers with low-privileged authenticated access can exploit this issue over the network. Public disclosure of the exploit details increases the likelihood of opportunistic attacks against exposed installations.

Critical Impact

Authenticated remote attackers can upload arbitrary files through the product image upload parameters, potentially enabling webshell deployment and follow-on compromise of the hosting environment.

Affected Products

• Codezips Online Shopping Portal 1.0
• insert-product.php upload handler
• Deployments exposing the product management interface to untrusted networks

Discovery Timeline

• 2024-09-20 - CVE-2024-9038 published to NVD
• 2024-09-27 - Last updated in NVD database

Technical Details for CVE-2024-9038

Vulnerability Analysis

The vulnerability stems from missing file type and content validation in the product creation workflow. The insert-product.php endpoint accepts three image upload parameters: productimage1, productimage2, and productimage3. The application stores submitted files without verifying extensions, MIME types, or magic bytes. Attackers can substitute server-executable scripts in place of expected image data.

The attack requires network access and low-level authenticated privileges. No user interaction is needed once the attacker holds an account capable of submitting product entries. Public proof-of-concept documentation lowers the barrier for exploitation against internet-facing instances.

Root Cause

The root cause is improper input validation on file uploads, categorized under [CWE-434] Unrestricted Upload of File with Dangerous Type. The application trusts the supplied filename and content rather than enforcing an allowlist of safe image formats. The uploaded files are written to a directory served by the web application, allowing direct request-based execution.

Attack Vector

An authenticated attacker submits a crafted multipart form request to insert-product.php containing a malicious payload, such as a PHP webshell, in one of the productimage1, productimage2, or productimage3 fields. Once stored, the attacker requests the uploaded file path to trigger server-side execution under the privileges of the web server process. See the GitHub CVE Documentation and VulDB Vulnerability ID #278209 for technical disclosure details.

Detection Methods for CVE-2024-9038

Indicators of Compromise

• Unexpected files with executable extensions (.php, .phtml, .phar) inside product image upload directories
• HTTP POST requests to insert-product.php containing non-image content types in productimage1, productimage2, or productimage3 fields
• Outbound network connections originating from the web server process to unfamiliar destinations following product creation events

Detection Strategies

• Inspect web server access logs for POST requests to insert-product.php followed by GET requests to newly created files in the image upload path
• Monitor file system events on the upload directory for creation of files whose extensions do not match permitted image formats
• Correlate authentication events with product submission activity to surface accounts performing unusual upload patterns

Monitoring Recommendations

• Enable file integrity monitoring on web application document roots and upload directories
• Forward web server, PHP error, and application logs to a centralized analytics platform for retention and correlation
• Alert on execution of interpreter processes (php-cgi, php) spawning shells or network utilities from upload paths

How to Mitigate CVE-2024-9038

Immediate Actions Required

• Restrict access to the administrative product management interface using network controls or authentication gateways until a fix is in place
• Audit the upload directory for unauthorized files and remove any non-image artifacts
• Revoke and reissue credentials for accounts that can access insert-product.php if compromise is suspected

Patch Information

No vendor advisory or official patch has been published for Codezips Online Shopping Portal 1.0 at the time of NVD entry. Operators should track the VulDB entry for updates and consider migrating away from the affected release if upstream maintenance is not available.

Workarounds

• Configure the web server to deny script execution within product image upload directories using directives such as php_admin_flag engine off or equivalent location-based handlers
• Implement a server-side allowlist validating uploaded file extensions and MIME types against expected image formats (.jpg, .png, .gif) and verify magic bytes
• Rename uploaded files to randomized identifiers and strip user-supplied extensions before persisting them to disk
• Deploy a web application firewall rule blocking multipart uploads to insert-product.php that contain executable content signatures

# Configuration example: Apache directive to disable PHP execution in upload directory
<Directory "/var/www/online_shopping_portal/uploads">
    php_admin_flag engine off
    AddType text/plain .php .phtml .phar
    <FilesMatch "\.(php|phtml|phar)$">
        Require all denied
    </FilesMatch>
</Directory>