CVE-2005-4440
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…
Does this matter?
Lower severity and a low EPSS score (1.61%). Track it; it rarely justifies an emergency change on its own.
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."
- CVSS 2.0
- 5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:P/A:N
- EPSS
- 1.61% probability · 75th percentile
- CISA KEV
- Not listed
- Affected
- vlan protocol/vlan protocol
- Source
- cve@mitre.org
References
- 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
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.