Therefore, an attacker needs an extra condition (besides being connected to the same switch) in order to redirect the network traffic between the switch and the target host through the attacker. Instead, the switch sends frames to each of the hosts connected to the switches independently, depending on the recipient. Switched networks are different than hub-based networks because they don’t work on the principle of broadcasts. Attacker executes network monitoring tool in promiscuous mode to capture packets exchanged between hosts.Attacker connects to same hub as one of the target nodes.Then, the attacker starts monitoring network traffic in promiscuous mode, capturing all packets sent to the target host. In this scenario, the attacker simply needs to be connected to the same hub as the target host. Upon receiving a frame from the hub, each host checks if the frame is addressed to it. Hub networks work by broadcasting every network frame every host connected to the hub. Step 2: Analyze causes and countermeasuresįirst, it is necessary to understand the different attack scenarios related to this bug:.

This attack is applicable to different types of environments, including Local Area Networks (LANs) interconnected by hubs or switches, as well as to Wireless Local Area Networks (WLANs).įollow these steps to test for network eavesdropping bugs: Attackers commonly use this vulnerability to retrieve sensitive information, including users’ passwords. Network eavesdropping or network sniffing attacks consist of intercepting network traffic between two target network nodes, and capturing network packets exchanged between nodes.

How to identify attacks using wireshark