CVE-2005-4440
Medium
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."
SeverityMedium
CVSS5.0
Exploit probability—
ProductVlan Protocol
PublishedDec 21, 2005
First seenDec 21, 2005
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| vlan_protocol vlan_protocol | 802.1q | — |
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