CVE-2005-4440

Published: Dec 21, 2005Modified: Apr 16, 2026

5.0

Vector

AV:N/AC:L/Au:N/C:N/I:P/A:N

Exploitability: 10.0 / Impact: 2.9

Source: NVD

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."

Affected (1)

Products: Vlan Protocol: Vlan Protocol

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Vlan Protocol Vlan Protocol	Version 802.1q

References (6)

http://lists.grok.org.uk/pipermail/full-disclosure/2005-December/040333.html

Source: cve@mitre.org

http://www.securityfocus.com/archive/1/419831/100/0/threaded

Source: cve@mitre.org

http://www.securityfocus.com/archive/1/419834/100/0/threaded

Source: cve@mitre.org

http://lists.grok.org.uk/pipermail/full-disclosure/2005-December/040333.html

Source: af854a3a-2127-422b-91ae-364da2661108

http://www.securityfocus.com/archive/1/419831/100/0/threaded

Source: af854a3a-2127-422b-91ae-364da2661108

http://www.securityfocus.com/archive/1/419834/100/0/threaded

Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

No history available yet.