Detections
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Cisco VLAN Trunking Protocol Vulnerability (cisco-sr-20081105-vtp)

medium Nessus Plugin ID 17792

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Synopsis

The remote device is missing a vendor-supplied security patch.

Description

The VTP protocol implementation in Cisco IOS is potentially vulnerable to a denial of service attack via a specially crafted VTP packet sent from the local network segment when operating in either server or client VTP mode. When the device receives the specially crafted VTP packet, the switch may crash. The crafted packet must be received on a switch interface configured to operate as a trunk port.

Solution

Apply the relevant patch which can be obtained from the Cisco Bug tracker.

See Also

http://www.nessus.org/u?76d1c9e0

https://seclists.org/fulldisclosure/2009/Jan/548

Plugin Details

Severity: Medium

ID: 17792

File Name: cisco-sr-20081105-vtp.nasl

Version: 1.19

Type: combined

Family: CISCO

Published: 1/10/2012

Updated: 11/15/2018

Supported Sensors: Nessus

Risk Information

CVSS Score Rationale: Tenable's impact score for availability has been lowered to partial for this dos.

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5.7

Temporal Score: 4.2

Vector: CVSS2#AV:A/AC:M/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2008-4963

Vulnerability Information

CPE: cpe:/o:cisco:ios

Required KB Items: Host/Cisco/IOS/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 11/5/2008

Vulnerability Publication Date: 11/5/2008

Reference Information

CVE: CVE-2008-4963

BID: 32120