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CVE-2005-4440

Medium
5/10

Summary

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."

  • LOW
  • NETWORK
  • NONE
  • PARTIAL
  • NONE
  • NONE

References

Advisory Timeline

  • Published