Security Advisory 0080

This advisory documents the impact of 4 publicly disclosed vulnerabilities within Ethernet encapsulation protocols on Arista products. The issues involve how L2 network security controls can be bypassed using VLAN 0 stacking or 802.3 LLC headers with invalid length. An attacker can send crafted packets through vulnerable devices to cause Denial-of-Service (DoS) or to perform a Man-in-the-Middle (MitM) attack against L2 reachable hosts in the network.