Multiple D-Link products null pointer dereference vulnerability

The D-Link DAP-2310 is a single-band wireless network access point for small businesses or schools that need a fast and reliable wireless network. the DAP-2330 is a wireless N300 single-band PoE access point. A null pointer dereference vulnerability exists in several D-Link products. The vulnerability stems from the fact that when the binary processes a specific HTTP GET request with NULL content in the upload_file variable in the upload_config function, strncasecmp takes NULL as the first parameter, resulting in a NULL pointer dereference. An attacker could exploit the vulnerability to cause the program to crash.