Cisco NX-OS Software (UCS) Software Cisco Fabric Services DoS (cisco-sa-fxos-nxos-cfs-dos-dAmnymbd)

High Nessus Plugin ID 142425

New! Vulnerability Priority Rating (VPR)

Tenable calculates a dynamic VPR for every vulnerability. VPR combines vulnerability information with threat intelligence and machine learning algorithms to predict which vulnerabilities are most likely to be exploited in attacks. Read more about what VPR is and how it's different from CVSS.

VPR Score: 4.4


The remote device is missing a vendor-supplied security patch


According to its self-reported version, the Cisco UCS instance NX-OS Software is affected by a denial of service (DoS) vulnerability. It exists in Cisco fabric services due to insufficient error handling of Cisco fabric service messages. An unauthenticated, remote attacker can exploit this issue, via sending crafted Cisco fabric service messages to an affected device, resulting in a Denial of Service event.

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


Upgrade to the relevant fixed version referenced in Cisco bug IDs CSCvt46838, CSCvt46877

See Also

Plugin Details

Severity: High

ID: 142425

File Name: cisco-sa-fxos-nxos-cfs-dos-dAmnymbd-ucs.nasl

Version: 1.5

Type: remote

Family: CISCO

Published: 2020/11/04

Updated: 2020/11/05

Dependencies: 69919

Configuration: Enable paranoid mode

Risk Information

Risk Factor: High

VPR Score: 4.4

CVSS Score Source: CVE-2020-3517

CVSS v2.0

Base Score: 7.8

Temporal Score: 5.8

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 8.6

Temporal Score: 7.5

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

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

Vulnerability Information

CPE: cpe:/o:cisco:nx-os, cpe:/a:cisco:unified_computing_system

Required KB Items: installed_sw/cisco_ucs_manager, Settings/ParanoidReport

Exploit Ease: No known exploits are available

Patch Publication Date: 2020/08/26

Vulnerability Publication Date: 2020/08/26

Reference Information

CVE: CVE-2020-3517