CVE-2019-9951 Explained : Impact and Mitigation

A vulnerability in Western Digital's My Cloud firmware versions prior to 2.31.174 allows unauthorized file uploads without authentication.

Understanding CVE-2019-9951

This CVE involves a security flaw in various Western Digital My Cloud storage devices that enables unauthorized users to upload files without authentication.

What is CVE-2019-9951?

The vulnerability in Western Digital's My Cloud firmware versions before 2.31.174 permits unauthorized users to upload files to any location on the connected storage device without requiring authentication credentials. The specific webpage affected is web/jquery/uploader/uploadify.php.

The Impact of CVE-2019-9951

This vulnerability poses a significant security risk as it allows malicious actors to upload arbitrary files to the storage device without any authentication, potentially leading to data breaches or unauthorized access.

Technical Details of CVE-2019-9951

This section provides more technical insights into the vulnerability.

Vulnerability Description

The Western Digital My Cloud, My Cloud Mirror Gen2, My Cloud EX2 Ultra, My Cloud EX2100, My Cloud EX4100, My Cloud DL2100, My Cloud DL4100, My Cloud PR2100, and My Cloud PR4100 firmware versions prior to 2.31.174 are affected by an unauthenticated file upload vulnerability. The specific page, web/jquery/uploader/uploadify.php, allows file uploads without authentication.

Affected Systems and Versions

Western Digital My Cloud firmware versions before 2.31.174

Exploitation Mechanism

Unauthorized users can exploit this vulnerability by accessing the specific webpage without the need for any authentication credentials, enabling them to upload files to any location on the connected storage device.

Mitigation and Prevention

Protecting systems from this vulnerability requires immediate actions and long-term security practices.

Immediate Steps to Take

Update the firmware to version 2.31.174 or later provided by Western Digital.
Restrict access to the affected devices and web interfaces.
Monitor for any unauthorized file uploads or suspicious activities.

Long-Term Security Practices

Regularly update firmware and software to patch known vulnerabilities.
Implement strong authentication mechanisms and access controls.
Conduct regular security audits and penetration testing.

Patching and Updates

Apply the latest firmware updates provided by Western Digital to address this vulnerability.