Cisco FXOS and NX-OS Software Cisco Discovery Protocol Arbitrary Code Execution (cisco-sa-20180620-fxnxos-dos)

high Nessus Plugin ID 138347


The remote device is missing a vendor-supplied security patch


According to its self-reported version, Cisco FXOS Software is affected by a vulnerability in the Cisco Discovery Protocol due to insufficiently validated packet headers. An unauthenticated, adjacent attacker can exploit this, via a crafted Cisco Discovery Protocol packet, to execute arbitrary code.

Please see the included Cisco BIDs and Cisco Security Advisory for more information.


Upgrade to the relevant fixed version referenced in Cisco bug IDs CSCvc22202, CSCvc22205, CSCvc22208, CSCvc88078, CSCvc88150, CSCvc88159, CSCvc88162, CSCvc88167

See Also

Plugin Details

Severity: High

ID: 138347

File Name: cisco-sa-20180620-fxos-dos.nasl

Version: 1.6

Type: combined

Family: CISCO

Published: 7/9/2020

Updated: 5/20/2021

Risk Information


Risk Factor: Medium

Score: 5.9


Risk Factor: High

Base Score: 8.3

Temporal Score: 6.1

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

CVSS Score Source: CVE-2018-0303


Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:cisco:fxos

Required KB Items: installed_sw/FXOS

Exploit Ease: No known exploits are available

Patch Publication Date: 6/20/2018

Vulnerability Publication Date: 6/21/2018

Reference Information

CVE: CVE-2018-0303