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Vulnerability Score 5.0 5.0
CVE Id CVE-2005-4441
Last Modified 05 Sep 2008 04:56:53
Published 20 Dec 2005 09:03:00
Confidentiality Impact NONE NONE
Integrity Impact PARTIAL PARTIAL
Availability Impact NONE NONE
Access Vector NETWORK
Access Complexity LOW
Authentication NONE



The PVLAN protocol allows remote attackers to bypass network segmentation and spoof PVLAN traffic via a PVLAN message with a target MAC address that is set to a gateway router, which causes the packet to be sent to the router, where the source MAC is modified, aka "Modification of the MAC spoofing PVLAN jumping attack," as demonstrated by pvlan.c.

Vulnerable Systems


  • Pvlan Protocol


BUGTRAQ - 20051219 Re: Making unidirectional VLAN and PVLAN jumping bidirectional

BUGTRAQ - 20051219 Making unidirectional VLAN and PVLAN jumping bidirectional

Last Updated: 27 May 2016 10:41:18