PT-2019-19955 · Western Digital · My Cloud Ex2100+8

Bnbdrwd · Published 2019-04-24 · Updated 2019-05-28 · CVE-2019-9951

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions 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

Description The issue allows for an unauthenticated file upload, enabling the upload of arbitrary files to any location on the attached storage. This is possible through access to the "web/jquery/uploader/uploadify.php" page without requiring any credentials.

Recommendations For 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, update the firmware to version 2.31.174 or later to resolve the issue. As a temporary workaround, consider restricting access to the "web/jquery/uploader/uploadify.php" page to prevent unauthenticated file uploads.

Fix

Unrestricted File Upload

Weakness Enumeration

CWE-434

Related Identifiers

CVE-2019-9951

Affected Products

My Cloud

My Cloud Dl2100

My Cloud Dl4100

My Cloud Ex2 Ultra

My Cloud Ex2100

My Cloud Ex4100

My Cloud Mirror Gen2

My Cloud Pr2100

My Cloud Pr4100

References · 6

• https://osv.dev/vulnerability/CVE-2019-9951 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-9951 · Security Note
• https://bnbdr.github.io/posts/wd · Note
• https://support.wdc.com/downloads.aspx?g=2702&lang=en · Note
• https://github.com/bnbdr/wd-rce · Note
• https://community.wd.com/t/new-release-my-cloud-firmware-versions-2-31-174-3-26-19/235932 · Note