D-Link DIR-878A1 vulnerabilities

An unauthenticated command injection vulnerability exists in the D-Link DIR-878A1 router firmware FW101B04.bin. The vulnerability occurs in the 'SetNetworkSettings' functionality of prog.cgi, where the 'IPAddress' and 'SubnetMask' parameters are directly concatenated into shell commands executed via system().

A stack buffer overflow vulnerability exists in the D-Link DIR-878A1 router firmware FW101B04.bin in the USB storage handling module. The issue occurs when the "Serial Number" field from a USB device is read via sscanf into a 64-byte stack buffer, while fgets reads up to 127 bytes, causing a stack overflow.

An unauthenticated command injection vulnerability exists in the D-Link DIR-878A1 router firmware FW101B04.bin. The vulnerability occurs in the 'SetDMZSettings' functionality, where the 'IPAddress' parameter in prog.cgi is stored in NVRAM and later used by librcm.so to construct iptables commands executed via twsystem(). An attacker can exploit this vulnerability remotely without authentication by sending a specially crafted HTTP request, leading to arbitrary command execution on the device.

An unauthenticated command injection vulnerability exists in the D-Link DIR-878A1 router firmware FW101B04.bin. The issue is in the 'SetDynamicDNSSettings' functionality, where 'ServerAddress' and 'Hostname' parameters are stored in NVRAM and later used to construct system commands executed via twsystem(). An attacker can exploit this remotely without authentication by sending a crafted HTTP request, leading to arbitrary command execution on the device.