Cisco NX-OS Software Cisco Discovery Protocol Arbitrary Code Execution and DoS (cisco-sa-20200226-fxos-nxos-cdp)

high Nessus Plugin ID 134235

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, Cisco NX-OS Software is affected by a vulnerability in the Cisco Discovery Protocol feature due to insufficient validation of Cisco Discovery Protocol packet headers. An unauthenticated, adjacent attacker can exploit this, by sending a crafted Cisco Discovery Protocol packet to a Layer-2 adjacent affected device, in order to execute arbitrary code as root or cause a denial of service DoS condition.

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

Solution

Upgrade to the relevant fixed version referenced in Cisco bug IDs CSCux07556, CSCux58226, CSCvr31410, CSCvr37146, CSCvr37148, and CSCvr37150.

Plugin Details

Severity: High

ID: 134235

File Name: cisco-sa-20200226-nxos-cdp.nasl

Version: 1.13

Type: combined

Family: CISCO

Published: 3/6/2020

Updated: 3/8/2024

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-2020-3172

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: 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: 2/26/2020

Vulnerability Publication Date: 2/26/2020

Reference Information

CVE: CVE-2020-3172

CISCO-SA: cisco-sa-20200226-fxos-nxos-cdp

IAVA: 2020-A-0086-S

CISCO-BUG-ID: CSCux07556, CSCux58226, CSCvr31410, CSCvr37146, CSCvr37148, CSCvr37150

Detections

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