dir-816_firmware

D-link DIR-816 A2_v1.10CNB04.img is vulnerable to Buffer Overflow via /goform/form2Wan.cgi. When wantype is 3, l2tp_usrname will be decrypted by base64, and the result will be stored in v94, which does not check the size of l2tp_usrname, resulting in stack overflow.

D-link DIR-816 A2_v1.10CNB04.img reboots the router without authentication via /goform/doReboot. No authentication is required, and reboot is executed when the function returns at the end.

In D-Link DIR-816 A2_v1.10CNB04.img a command injection vulnerability occurs in /goform/Diagnosis, after the condition is met, setnum will be spliced into v10 by snprintf, and the system will be executed, resulting in a command injection vulnerability

D-Link DIR-816 A2_v1.10CNB04.img is vulnerable to Command Injection via /goform/SystemCommand. After the user passes in the command parameter, it will be spliced into byte_4836B0 by snprintf, and finally doSystem(&byte_4836B0); will be executed, resulting in a command injection.

In D-Link DIR-816 A2_v1.10CNB04.img the network can be initialized without authentication via /goform/wizard_end.

D-link DIR-816 A2_v1.10CNB04.img is vulnerable to Command injection via /goform/NTPSyncWithHost.