CVE-2020-3359

Cisco IOS XE Software for Catalyst 9800 Series Wireless Controllers Multicast DNS Denial of Service Vulnerability

Severity Score

8.6

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

A vulnerability in the multicast DNS (mDNS) feature of Cisco IOS XE Software for Cisco Catalyst 9800 Series Wireless Controllers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to improper validation of mDNS packets. An attacker could exploit this vulnerability by sending a crafted mDNS packet to an affected device. A successful exploit could cause a device to reload, resulting in a DoS condition.

Una vulnerabilidad en la función multicast DNS (mDNS) de Cisco IOS XE Software para Cisco Catalyst 9800 Series Wireless Controllers, podría permitir a un atacante remoto no autenticado causar una condición de denegación de servicio (DoS). La vulnerabilidad es debido a una comprobación incorrecta de los paquetes mDNS. Un atacante podría explotar esta vulnerabilidad mediante el envío de un paquete mDNS diseñado hacia un dispositivo afectado. Una explotación con éxito podría hacer que un dispositivo se recargue, resultando en una condición DoS.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2019-12-12 CVE Reserved
2020-09-24 CVE Published
2023-06-10 EPSS Updated
2024-11-13 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-mdns-dos-3tH6cA9J	2021-08-06

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	16.12.1 Search vendor "Cisco" for product "Ios Xe" and version "16.12.1"	-	Affected	in	Cisco Search vendor "Cisco"	2610xm Search vendor "Cisco" for product "2610xm"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	16.12.1 Search vendor "Cisco" for product "Ios Xe" and version "16.12.1"	-	Affected	in	Cisco Search vendor "Cisco"	2611xm Search vendor "Cisco" for product "2611xm"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	16.12.1 Search vendor "Cisco" for product "Ios Xe" and version "16.12.1"	-	Affected	in	Cisco Search vendor "Cisco"	2612 Search vendor "Cisco" for product "2612"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	16.12.1 Search vendor "Cisco" for product "Ios Xe" and version "16.12.1"	-	Affected	in	Cisco Search vendor "Cisco"	2620xm Search vendor "Cisco" for product "2620xm"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	16.12.1 Search vendor "Cisco" for product "Ios Xe" and version "16.12.1"	-	Affected	in	Cisco Search vendor "Cisco"	2621xm Search vendor "Cisco" for product "2621xm"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	16.12.1 Search vendor "Cisco" for product "Ios Xe" and version "16.12.1"	-	Affected	in	Cisco Search vendor "Cisco"	2650xm Search vendor "Cisco" for product "2650xm"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	16.12.1 Search vendor "Cisco" for product "Ios Xe" and version "16.12.1"	-	Affected	in	Cisco Search vendor "Cisco"	2651xm Search vendor "Cisco" for product "2651xm"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	16.12.1 Search vendor "Cisco" for product "Ios Xe" and version "16.12.1"	-	Affected	in	Cisco Search vendor "Cisco"	2691 Search vendor "Cisco" for product "2691"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	16.12.1 Search vendor "Cisco" for product "Ios Xe" and version "16.12.1"	-	Affected	in	Cisco Search vendor "Cisco"	Catalyst 9800-40 Search vendor "Cisco" for product "Catalyst 9800-40"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	16.12.1 Search vendor "Cisco" for product "Ios Xe" and version "16.12.1"	-	Affected	in	Cisco Search vendor "Cisco"	Catalyst 9800-80 Search vendor "Cisco" for product "Catalyst 9800-80"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	16.12.1 Search vendor "Cisco" for product "Ios Xe" and version "16.12.1"	-	Affected	in	Cisco Search vendor "Cisco"	Catalyst 9800-cl Search vendor "Cisco" for product "Catalyst 9800-cl"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	16.12.1 Search vendor "Cisco" for product "Ios Xe" and version "16.12.1"	-	Affected	in	Cisco Search vendor "Cisco"	Catalyst 9800-l Search vendor "Cisco" for product "Catalyst 9800-l"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	16.12.1 Search vendor "Cisco" for product "Ios Xe" and version "16.12.1"	-	Affected	in	Cisco Search vendor "Cisco"	Catalyst 9800-l-c Search vendor "Cisco" for product "Catalyst 9800-l-c"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	16.12.1 Search vendor "Cisco" for product "Ios Xe" and version "16.12.1"	-	Affected	in	Cisco Search vendor "Cisco"	Catalyst 9800-l-f Search vendor "Cisco" for product "Catalyst 9800-l-f"	-	-	Safe