Using Yersinia to perform DHCP Starvation attack on the network (DoS)

#Yersinia #DHCPStarvation #DoS #DHCPDiscover
In this demonstration, we use the tool Yersinia to flood DHCP Discover packets from the attacker machine to the network. The switch/router responsible for handing out addresses will be starved and none will remain in the DHCP pool to hand out on the network. If a device tries to connect or reconnect, it will not be able to obtain an address and thus, a Denial-Of-Service is achieved. Steps listed below:

1. Setup environment with attacker, switch/router, and target (attacker must be on same subnet/VLAN as the target). NOTE: This works best with Cisco switches or routers
2. Launch Yersinia on the attacker machine and choose the DHCP DISCOVER option
3. Notice that the MAC address table on the gateway will be flooded with devices (fake) as packet count increases and the subnet is starved of IPs to hand out to clients
4. You can reset the network interface or release IP on the Windows machine to test out the results. Clearly, Windows machine no longer will be able to obtain an IP and the Autoconfiguration IP address will be shown

Видео Using Yersinia to perform DHCP Starvation attack on the network (DoS) канала Bellagio Sampler