This module exploits the command injection vulnerability of Symantec Messaging Gateway product. An authenticated user can execute a terminal command under the context of the web server user which is root. The backupNow.do endpoint takes several user inputs and then pass them to the internal service which is responsible for executing operating system command. One of the user input is being passed to the service without proper validation. That cause an command injection vulnerability. But given parameters, such a SSH ip address, port and credentials are validated before executing terminal command. Thus, you need to configure your own SSH service and set the required parameter during module usage. This module was tested against Symantec Messaging Gateway 10.6.2-7.