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Cisco Nexus 9000 Series Fabric Switches Application Centric Infrastructure Mode Default SSH Key Vulnerability (cisco-sa-20190501-nexus9k-sshkey)

critical Nessus Plugin ID 137075

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Synopsis

The remote device version has a default SSH key with root privilages (cisco-sa-20190501-nexus9k-sshkey)

Description

According to its self-reported version, Cisco NX-OS Software for Nexus 9000 Series Fabric Switches ACI Mode has a Default SSH System Key. An unauthenticated, remote attacker can exploit this, to gain root privileges.

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

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvo80686

See Also

http://www.nessus.org/u?9e3299ff

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvo80686

Plugin Details

Severity: Critical

ID: 137075

File Name: cisco-sa-20190501-nexus9k-sshkey.nasl

Version: 1.4

Type: combined

Family: CISCO

Published: 6/3/2020

Updated: 6/8/2020

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2019-1804

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/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:nx-os

Required KB Items: Host/Cisco/NX-OS/Version, Host/Cisco/NX-OS/Model, Host/Cisco/NX-OS/Device, Host/aci/system/chassis/summary

Exploit Ease: No known exploits are available

Patch Publication Date: 5/1/2019

Vulnerability Publication Date: 5/3/2019

Reference Information

CVE: CVE-2019-1804

BID: 108127