CVE-2024-9794: Codezips Shopping Portal RCE Vulnerability

CVE-2024-9794 Overview

CVE-2024-9794 is an unrestricted file upload vulnerability in Codezips Online Shopping Portal 1.0. The flaw resides in /update-image1.php, where the productimage1 parameter accepts uploaded files without proper validation. Attackers can exploit this issue remotely over the network with low-privileged access. The exploit details have been disclosed publicly, increasing the likelihood of opportunistic abuse against exposed instances. The weakness maps to [CWE-434] (Unrestricted Upload of File with Dangerous Type) and affects confidentiality, integrity, and availability of the host application.

Critical Impact

Authenticated attackers can upload arbitrary files through /update-image1.php, potentially staging web shells or malicious payloads on the affected server.

Affected Products

• Codezips Online Shopping Portal 1.0
• Vendor: Codezips
• Component: /update-image1.php handling the productimage1 parameter

Discovery Timeline

• 2024-10-10 - CVE-2024-9794 published to NVD
• 2024-10-15 - Last updated in NVD database

Technical Details for CVE-2024-9794

Vulnerability Analysis

The vulnerability is an unrestricted file upload flaw in the product image update workflow of Codezips Online Shopping Portal 1.0. The /update-image1.php endpoint processes the productimage1 argument without enforcing file type, extension, or content validation. As a result, an attacker with low-privileged access can submit a file of arbitrary type through this parameter. The disclosed attack path is network-reachable and does not require user interaction. Because the upload destination is served by the web application, an attacker can place server-executable content into a directory accessible by the PHP interpreter. This enables a transition from file write primitive to remote command execution within the application context.

Root Cause

The root cause is missing server-side validation of uploaded content in /update-image1.php. The handler accepts the productimage1 field and writes it to disk without checking MIME type, extension allow-listing, magic bytes, or rewriting the file name. The flaw aligns with [CWE-434], where dangerous file types are accepted by the application logic.

Attack Vector

An authenticated attacker sends a multipart HTTP POST request to /update-image1.php with the productimage1 field containing a PHP payload such as shell.php. After upload, the attacker requests the uploaded file URL to execute the payload under the privileges of the web server process. Public disclosure of the issue through the GitHub issue tracker and VulDB lowers the barrier for reuse by opportunistic actors. Refer to the GitHub CVE Issue Tracker and the VulDB entry #279947 for further technical context.

Detection Methods for CVE-2024-9794

Indicators of Compromise

• HTTP POST requests to /update-image1.php containing productimage1 form fields with non-image extensions such as .php, .phtml, or .phar.
• New files appearing in product image directories with executable server-side extensions or mismatched magic bytes.
• Outbound network connections initiated by the web server process shortly after an upload to /update-image1.php.
• Web server access logs showing GET requests to recently uploaded files in the product image upload path.

Detection Strategies

• Inspect web server and application logs for POST requests to /update-image1.php followed by GET requests to files in the same upload directory.
• Deploy a web application firewall rule that blocks multipart uploads to /update-image1.php where the file extension is not in an image allow-list.
• Monitor file integrity on the web root and product image directories for newly created .php or other executable files.

Monitoring Recommendations

• Forward web access logs and PHP error logs to a centralized logging platform and alert on anomalous POST volume to /update-image1.php.
• Track child processes spawned by the web server user, such as php, sh, or bash initiating network connections.
• Baseline normal upload sizes and content types for product images and alert on deviations.

How to Mitigate CVE-2024-9794

Immediate Actions Required

• Restrict network access to administrative endpoints including /update-image1.php using IP allow-lists or VPN-only access until a fix is available.
• Revoke or rotate credentials for accounts that have low-privileged access to the product image management interface.
• Inspect existing upload directories for unauthorized files and remove any non-image content.
• Disable PHP execution in directories that store user-uploaded content.

Patch Information

No vendor advisory or official patch has been published in the referenced sources at the time of the NVD entry. Operators of Codezips Online Shopping Portal 1.0 should monitor the vendor's distribution channel and the VulDB record for updates and apply remediation guidance when available.

Workarounds

• Configure the web server to deny execution of scripts within upload directories using directives such as php_admin_flag engine off or equivalent nginx location rules.
• Implement server-side validation that enforces an allow-list of image extensions and verifies file magic bytes before persisting uploads.
• Rename uploaded files to randomized identifiers without preserving the client-supplied extension.
• Place a web application firewall in front of the application to block multipart uploads containing PHP tags or server-side script signatures.

# Apache configuration example to disable PHP execution in upload directory
<Directory "/var/www/online_shopping_portal/uploads">
    php_admin_flag engine off
    SetHandler none
    RemoveHandler .php .phtml .phar
    Options -ExecCGI
</Directory>