Cisco Nexus 9000 Series Fabric Switches ACI Mode Link Layer Discovery Protocol Buffer Overflow Vulnerability

high Nessus Plugin ID 128532

Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, the Cisco NX-OS Software in ACI mode is affected by a buffer overflow vulnerability. An unauthenticated, adjacent attacker could exploit this vulnerability, via a specially crafted Link Layer Discovery Protocol (LLDP) packet, to cause a denial-of-service condition or potentially execute arbitrary code with root privileges. Please see the reference Cisco BID and Cisco Security Advisory for more information.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvp92121

See Also

http://www.nessus.org/u?dd3ed165

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvp92121

Plugin Details

Severity: High

ID: 128532

File Name: cisco-sa-20190731-nxos-bo.nasl

Version: 1.6

Type: combined

Family: CISCO

Published: 9/6/2019

Updated: 12/20/2019

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

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-2019-1901

CVSS v3

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:nx-os

Required KB Items: Settings/ParanoidReport, Host/Cisco/NX-OS/Version, Host/Cisco/NX-OS/Model, Host/Cisco/NX-OS/Device

Exploit Ease: No known exploits are available

Patch Publication Date: 7/31/2019

Vulnerability Publication Date: 7/31/2019

Reference Information

CVE: CVE-2019-1901

CISCO-SA: cisco-sa-20190731-nxos-bo

IAVA: 2019-A-0317

CISCO-BUG-ID: CSCvp92121