An issue was discovered on Western Digital MyCloud PR4100 2.30.172 devices. The web administration component, /web/jquery/uploader/multi_uploadify.php, provides multipart upload functionality that is accessible without authentication and can be used to place a file anywhere on the devices file system. This allows an attacker the ability to upload a PHP shell onto the device and obtain arbitrary code execution as root.
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| My_cloud_pr4100_firmware | Westerndigital | 2.30.172 (including) | 2.30.172 (including) |