L2 network security controls can be bypassed using VLAN 0 stacking and/or 802.3 headers

ronjor · Sep 30, 2022

Vulnerability Note VU#855201
Original Release Date: 2022-09-27 | Last Revised: 2022-09-29

Overview
Layer-2 (L2) network security controls provided by various devices, such as switches, routers, and operating systems, can be bypassed by stacking Ethernet protocol headers. 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 a target network.
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L2 network security controls can be bypassed using VLAN 0 stacking and/or 802.3 headers

ronjor Global Moderator

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L2 network security controls can be bypassed using VLAN 0 stacking and/or 802.3 headers

ronjor Global Moderator

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