Cisco IOS VTP VLAN name buffer overflow

cisco-ios-vtp-vlan-name-bo (28927) The risk level is classified as HighHigh Risk


Cisco IOS is vulnerable to a heap-based buffer overflow in the VTP (VLAN Trunking Protocol) feature. By sending a VTP summary advertisement containing a VLAN name of more than 100 characters, a remote attacker who can send VTP updated to an affected device could overflow a buffer and execute arbitrary code on the vulnerable device.


Base Score: 8
  Access Vector: Remote
  Access Complexity: High
  Authentication: Not Required
  Confidentiality Impact: Complete
  Integrity Impact: Complete
  Availability Impact: Complete
Temporal Score: 6.5
  Exploitability: Unproven
  Remediation Level: Workaround
  Report Confidence: Confirmed


Gain Access


Refer to cisco-sr-20060913-vtp for upgrade or suggested workaround information. See References.


Platforms Affected:

  • Cisco IOS 12.1(19)


Sep 13, 2006

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