Overview

• Manufacturer's website information：https://www.totolink.net/
• Firmware download address ：https://www.totolink.net/data/upload/20200728/311b3ec5b0a8e61af298aebda158ec9b.zip

Affected version

A3700R V9.1.2u.5822_B20200513

Vulnerability details

An improper access control vulnerability exists in the web management interface of A3700R V9.1.2u.5822_B20200513. By sending a specially crafted unauthenticated HTTP POST request to the topicurl endpoint with the header set to setDdnsCfg, an attacker can set the DDNS service of the device.

POC