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."
Advisories
Source ID Title
EUVD EUVD EUVD-2005-4435 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."
Fixes

Solution

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Workaround

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History

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-07T23:46:04.843Z

Reserved: 2005-12-21T00:00:00

Link: CVE-2005-4440

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2005-12-21T02:03:00.000

Modified: 2025-04-03T01:03:51.193

Link: CVE-2005-4440

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses