# Exploit Title: Mitrastar GPT-2541GNAC-N1 - Privilege escalation  
# Date: 10-08-2021  
# Exploit Author: Leonardo Nicolas Servalli  
# Vendor Homepage:  
# Platform: Mistrastar router devices GPT-2541GNAC-N1 (HGU)  
# Tested on: Firmware BR_g3.5_100VNZ0b33  
# Vulnerability analysis:  
# Mitrastar GPT-2541GNAC-N1 devices are provided with access through ssh into a restricted default shell (credentials are on the back of the router and in some cases this routers use default credentials).  
# The command “deviceinfo show file <path>” is used from reduced CLI to show files and directories. Because this command do not handle correctly special characters, is possible to insert a second command as a parameter on the <path> value. By using “&&/bin/bash” as parameter value we can spawn a bash console, as seen on the next example:  
> deviceinfo show file &&/bin/bash  
# This command will spawn a full interoperable bash console with root privileges.