Western Digital · Western Digital Mycloud Pr4100 · CVE-2017-17560
**Name of the Vulnerable Software and Affected Versions**
Western Digital MyCloud PR4100 version 2.30.172
**Description**
An issue in the web administration component allows for multipart upload functionality to be accessible without authentication. This is specifically related to the "/web/jquery/uploader/multi uploadify.php" endpoint, which can be used to place a file anywhere on the device's file system. As a result, an attacker can upload a PHP shell onto the device and obtain arbitrary code execution as root. The vulnerability is related to deficiencies in the authentication procedure of the web interface.
**Recommendations**
For Western Digital MyCloud PR4100 version 2.30.172, as a temporary workaround, consider disabling access to the "/web/jquery/uploader/multi uploadify.php" endpoint until a patch is available. Restricting access to this endpoint can minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.