Authentication bypass vulnerability in Western Digital My Cloud

From: Securify B.V. <lists@securify.nl>
To: bugtraq@securityfocus.com
Cc:
Subject: Authentication bypass vulnerability in Western Digital My Cloud
Date: Wed, 08 February 2017 18:03 GMT


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Authentication bypass vulnerability in Western Digital My Cloud
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Remco Vermeulen, Januari 2017

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Abstract
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It was discovered that Western Digital My Cloud is affected by an
authentication bypass vulnerability. By exploiting this vulnerability,
an unauthenticated attacker can bypass the login functionality and gain
full control of the device.

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Tested versions
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This vulnerability was successfully verified on a Western Digital My
Cloud model WDBCTL0020HWT running firmware version 2.21.119. This issue
isn't limited to the model that was used to find this vulnerability
since most of the products in the My Cloud series share the same
(vulnerable) code.

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Fix
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Western Digital has released firmware version 2.21.126 that resolves
this vulnerability. This updated firmware can be downloaded from the
following location:
https://support.wdc.com/downloads.aspx?g=904&lang=en#firmware

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Details
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https://www.securify.nl/advisory/SFY20170102/authentication_bypass_vulnerability_in_western_digital_my_cloud.html





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