Multiple Siemens Products Input Validation Error Vulnerability

Siemens SIMATIC HMI Comfort Panels is a touch panel device from Siemens (Germany). Multiple Siemens products are vulnerable to an input validation error, which stems from the inability of the affected device to properly validate input sent to certain services over TCP. An unauthenticated remote attacker could exploit the vulnerability by sending specially crafted TCP packets to cause a permanent denial of service (requiring a restart of the device).