SpinetiX Fusion Digital Signage 3.4.8 Username Enumeration Weakness

Title: SpinetiX Fusion Digital Signage 3.4.8 Username Enumeration Weakness
Advisory ID: ZSL-2020-5591
Type: Local/Remote
Impact: Exposure of Sensitive Information
Risk: (2/5)
Release Date: 30.09.2020
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.
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.
SpinetiX AG - https://www.spinetix.com
Affected Version
<=3.4.8 (1.0.36274)
Tested On
Apache 2.2.34
Linux 2.6.10
Vendor Status
[03.08.2020] Vulnerability discovered.
[25.09.2020] Vendor contacted.
[30.09.2020] No response from the vendor.
[30.09.2020] Public security advisory released.
Vulnerability discovered by Gjoko Krstic - <gjoko@zeroscience.mk>
[1] https://www.exploit-db.com/exploits/48847
[2] https://packetstormsecurity.com/files/159428
[3] https://cxsecurity.com/issue/WLB-2020100011
[4] https://exchange.xforce.ibmcloud.com/vulnerabilities/189294
[30.09.2020] - Initial release
[06.10.2020] - Added reference [1], [2], [3] and [4]
Zero Science Lab

Web: https://www.zeroscience.mk
e-mail: lab@zeroscience.mk