CVE-2019-9950: Critical severity western digital my cloud firmware vulnerability

Published Apr 24, 2019
·
Updated

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 before 2.31.174 is affected by an authentication bypass vulnerability. The loginmgr.cgi file checks credentials against /etc/shadow. However, the "nobody" account (which can be used to access the control panel API as a low-privilege logged-in user) has a default empty password, allowing an attacker to modify the My Cloud EX2 Ultra web page source code and obtain access to the My Cloud as a non-Admin My Cloud device user.

Affected Software

36 affected components
WesternDigital My Cloud Firmware<2.31.174
WesternDigital My Cloud
WesternDigital My Cloud Mirror Gen2 Firmware<2.31.174
WesternDigital My Cloud Mirror Gen2
WesternDigital My Cloud Ex2 Ultra Firmware<2.31.174
WesternDigital My Cloud Ex2 Ultra
WesternDigital My Cloud Ex2100 Firmware<2.31.174
WesternDigital My Cloud Ex2100
WesternDigital My Cloud Ex4100 Firmware<2.31.174
WesternDigital My Cloud Ex4100
WesternDigital My Cloud Dl2100 Firmware<2.31.174
WesternDigital My Cloud Dl2100
WesternDigital My Cloud Dl4100 Firmware<2.31.174
WesternDigital My Cloud Dl4100
WesternDigital My Cloud Pr2100 Firmware<2.31.174
WesternDigital My Cloud Pr2100
WesternDigital My Cloud Pr4100 Firmware<2.31.174
WesternDigital My Cloud Pr4100
All of the following
WesternDigital My Cloud Firmware<2.31.174
WesternDigital My Cloud
All of the following
WesternDigital My Cloud Mirror Gen2 Firmware<2.31.174
WesternDigital My Cloud Mirror Gen2
All of the following
WesternDigital My Cloud Ex2 Ultra Firmware<2.31.174
WesternDigital My Cloud Ex2 Ultra
All of the following
WesternDigital My Cloud Ex2100 Firmware<2.31.174
WesternDigital My Cloud Ex2100
All of the following
WesternDigital My Cloud Ex4100 Firmware<2.31.174
WesternDigital My Cloud Ex4100
All of the following
WesternDigital My Cloud Dl2100 Firmware<2.31.174
WesternDigital My Cloud Dl2100
All of the following
WesternDigital My Cloud Dl4100 Firmware<2.31.174
WesternDigital My Cloud Dl4100
All of the following
WesternDigital My Cloud Pr2100 Firmware<2.31.174
WesternDigital My Cloud Pr2100
All of the following
WesternDigital My Cloud Pr4100 Firmware<2.31.174
WesternDigital My Cloud Pr4100

Event History

Apr 24, 2019
CVE Published
via MITRE·05:17 PM
Data Sourced
via MITRE·05:17 PM
Description
Data Sourced
via NVD·06:29 PM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the vulnerability ID for this issue?

The vulnerability ID for this issue is CVE-2019-9950.

2

Which Western Digital products are affected by this vulnerability?

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 before version 2.31.174 are affected.

3

What is the severity of CVE-2019-9950?

The severity of CVE-2019-9950 is critical with a severity rating of 9.8 out of 10.

4

How can I fix the vulnerability in Western Digital My Cloud products?

To fix the vulnerability in Western Digital My Cloud products, you need to update the firmware to version 2.31.174 or higher.

5

Where can I find more information about CVE-2019-9950?

You can find more information about CVE-2019-9950 at the following links: [link1](https://bnbdr.github.io/posts/wd/), [link2](https://community.wd.com/t/new-release-my-cloud-firmware-versions-2-31-174-3-26-19/235932), [link3](https://github.com/bnbdr/wd-rce/).

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