Cisco IOS, IOS XE, and NX-OS Software Security Group Tag Exchange Protocol Denial of Service (CVE-2020-3228)

high Tenable OT Security Plugin ID 501317

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A vulnerability in Security Group Tag Exchange Protocol (SXP) in Cisco IOS Software, Cisco IOS XE Software, and Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability exists because crafted SXP packets are mishandled. An attacker could exploit this vulnerability by sending specifically crafted SXP packets to the affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

Solution

Refer to the vendor advisory.

Plugin Details

Severity: High

ID: 501317

Version: 1.1

Type: remote

Family: Tenable.ot

Published: 7/25/2023

Updated: 7/26/2023

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2020-3228

CVSS v3

Risk Factor: High

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:5.2%281%29sv5%281.2%29, cpe:/o:cisco:nx-os:5.2%281%29sv3%284.1a%29, cpe:/o:cisco:nx-os:5.2%281%29sv3%283.1%29, cpe:/o:cisco:nx-os:8.0%281%29, cpe:/o:cisco:nx-os:5.2%281%29sv5%281.3%29, cpe:/o:cisco:nx-os:5.2%281%29sv3%283.15%29, cpe:/o:cisco:nx-os:5.2%281%29sv5%281.1%29, cpe:/o:cisco:nx-os:5.2%281%29sv3%284.1%29, cpe:/o:cisco:nx-os:5.2%281%29sv3%284.1b%29

Required KB Items: Tenable.ot/Cisco

Exploit Ease: No known exploits are available

Patch Publication Date: 6/3/2020

Vulnerability Publication Date: 6/3/2020

Reference Information

CVE: CVE-2020-3228

CWE: 20

Detections

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