GV-LPC2011/LPC2211 - unauthorized null pointer dereference vulnerability in packet parsing

An unauthenticated NULL pointer dereference vulnerability exists in the HTTP request parsing logic of multiple CGI components in GeoVision GV-LPC2011 and GV-LPC2211 V1.12 and earlier. The vulnerability is caused by improper validation of required HTTP request metadata before it is used by the affected components. A remote attacker may exploit this vulnerability by sending a specially crafted HTTP request, causing the affected process to crash and resulting in a denial of service.