Unauthenticated RCE exploit for Fantec MWiD25-DS
Writeup for CVE-2022-28113 by @code-byter
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This is a writeup of exploiting the Fantec MWiD25-DS Travel Router (Firmware version: 2.000.030). This vulnerability allows any unauthorized user to execute arbitrary commands as root user. A vulnerability in the backup functionality (upload.csp) allows any user to write files and thus reset the user passwords without a valid session cookie. Using these new credentials the attacker can log into the web interface and exploit a buffer overflow vulnerability. The SSID parameter of the set wifi client functionality is vulnerable to a heap overflow and allows the attacker to execute arbitrary terminal commands. The whole exploit is possible without any user input or required reboot.
.. image:: images/router.jpg :width: 1200
Affected file: /protocol.csp
.. image:: images/base.png :width: 1000
The whole exploitation process is automated with a python script. To spawn a root shell run exploit.py.
.. code:: python
python3 exploit.py 10.10.10.254
.. image:: images/exploit.png :width: 1600
.. footer::
Daniel Schwendner, Email: [email protected], Instagram: code_byter