The 802.1q VLAN protocol allows remote attackers to bypass network segmentation and spoof VLAN traffic via a message with two 802.1q tags, which causes the second tag to be redirected from a downstream switch after the first tag has been stripped, as demonstrated by Yersinia, aka "double-tagging VLAN jumping attack."
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Status: PUBLISHED
Assigner: mitre
Published: 2005-12-21T02:00:00
Updated: 2024-08-07T23:46:04.843Z
Reserved: 2005-12-21T00:00:00
Link: CVE-2005-4440

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Status : Deferred
Published: 2005-12-21T02:03:00.000
Modified: 2025-04-03T01:03:51.193
Link: CVE-2005-4440

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