CVE-2005-4440 - Vulnerability Details - OpenCVE

Description

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."

Published: 2005-12-21

Score: 5.0 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

cpe:2.3:a:vlan_protocol:vlan_protocol:802.1q:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

Source	ID	Title
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."

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact Partial

Availability Impact None

This CVE is not in the KEV list.

The EPSS score is 0.00247.

Key SSVC decision points have not yet been added.

References

Link	Providers
http://lists.grok.org.uk/pipermail/full-disclosure/2005-December/040333.html
http://www.securityfocus.com/archive/1/419831/100/0/threaded
http://www.securityfocus.com/archive/1/419834/100/0/threaded

History

No history.

Subscriptions

Vlan Protocol Vlan Protocol

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2005-12-21T02:00:00.000Z

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

Reserved: 2005-12-21T00:00:00.000Z

Link: CVE-2005-4440

Vulnrichment

No data.

NVD

Status : Modified

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

Modified: 2026-04-16T00:27:16.627

Link: CVE-2005-4440

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

NVD-CWE-Other

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