All versions of ETIC Telecom Remote Access Server (RAS) prior to 4.9.19 are vulnerable to cross-site request forgery (CSRF). An external attacker with no access to the device can force the end user into submitting a "setconf" method request, not requiring any CSRF token, which can lead into denial of service on the device.
Solution:
The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.