TRENDnet TEW-831DR formSysCmd command injection

A vulnerability has been found in TRENDnet TEW-831DR 1.0 (601.130.1.1410). Impacted is an unknown function of the file /boafrm/formSysCmd. The manipulation of the argument sysHost leads to command injection. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

An issue was found on TRENDnet TEW-831DR 1.0 601.130.1.1356 devices. An OS injection vulnerability exists within the web interface, allowing an attacker with valid credentials to execute arbitrary shell commands.

An issue was found on TRENDnet TEW-831DR 1.0 601.130.1.1356 devices. The username and password setup for the web interface does not require entering the existing password. A malicious user can change the username and password of the interface.

An issue was found on TRENDnet TEW-831DR 1.0 601.130.1.1356 devices. The web interface is vulnerable to CSRF. An attacker can change the pre-shared key of the Wi-Fi router if the interface's IP address is known.

An issue was found on TRENDnet TEW-831DR 1.0 601.130.1.1356 devices. The network pre-shared key field on the web interface is vulnerable to XSS. An attacker can use a simple XSS payload to crash the basic.config page of the web interface.

An issue was found on TRENDnet TEW-831DR 1.0 601.130.1.1356 devices. The default pre-shared key for the Wi-Fi networks is the same for every router except for the last four digits. The device default pre-shared key for both 2.4 GHz and 5 GHz networks can be guessed or brute-forced by an attacker within range of the Wi-Fi network.