MitraStar GPT-2541GNAC Firewall Settings Page settings-firewall.cgi os command injection

A vulnerability, which was classified as critical, was found in MitraStar GPT-2541GNAC BR_g5.6_1.11(WVK.0)b26. Affected is an unknown function of the file /cgi-bin/settings-firewall.cgi of the component Firewall Settings Page. The manipulation of the argument SrcInterface leads to os command injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. We tried to contact the vendor early about the disclosure but the official mail address was not working properly.

MitraStar GPT-2541GNAC (HGU) 1.00(VNJ0)b1 and DSL-100HN-T1 ES_113WJY0b16 devices allow remote authenticated users to obtain root access by specifying /bin/sh as the command to execute.

MitraStar GPT-2541GNAC (HGU) 1.00(VNJ0)b1 and DSL-100HN-T1 ES_113WJY0b16 devices have a zyad1234 password for the zyad1234 account, which is equivalent to root and undocumented.

MitraStar GPT-2541GNAC-N1 (HGU) 100VNZ0b33 devices allow remote authenticated users to obtain root access by executing command "deviceinfo show file &&/bin/bash" because of incorrect sanitization of parameter "path".