CVE-2019-1920

Cisco IOS Access Points Software 802.11r Fast Transition Denial of Service Vulnerability

Severity Score

7.4

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

A vulnerability in the 802.11r Fast Transition (FT) implementation for Cisco IOS Access Points (APs) Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected interface. The vulnerability is due to a lack of complete error handling condition for client authentication requests sent to a targeted interface configured for FT. An attacker could exploit this vulnerability by sending crafted authentication request traffic to the targeted interface, causing the device to restart unexpectedly.

Una vulnerabilidad en la implementación de 802.11r Fast Transition (FT) para el Software IOS Access Points (APs) de Cisco, podría permitir a un atacante adyacente no autenticado causar una condición de denegación de servicio (DoS) en una interfaz afectada. La vulnerabilidad es debido a la falta de una condición de manejo de errores completo para las peticiones de autenticación de clientes enviadas hacia una interfaz específica configurada para FT. Un atacante podría explotar esta vulnerabilidad mediante un envío de tráfico de petición de autenticación hacia la interfaz de destino, haciendo que el dispositivo se reinicie inesperadamente.

*Credits: N/A

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Adjacent

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2018-12-06 CVE Reserved
2019-07-17 CVE Published
2023-03-08 EPSS Updated
2024-11-21 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (2)

URL	Tag	Source
http://www.securityfocus.com/bid/109312	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190717-aironet-dos	2020-10-16

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"	Aironet 3700e Firmware Search vendor "Cisco" for product "Aironet 3700e Firmware"	15.3\(3\)jc14 Search vendor "Cisco" for product "Aironet 3700e Firmware" and version "15.3\(3\)jc14"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 3700e Search vendor "Cisco" for product "Aironet 3700e"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet 3700e Firmware Search vendor "Cisco" for product "Aironet 3700e Firmware"	15.3\(3\)jd6 Search vendor "Cisco" for product "Aironet 3700e Firmware" and version "15.3\(3\)jd6"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 3700e Search vendor "Cisco" for product "Aironet 3700e"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet 3700i Firmware Search vendor "Cisco" for product "Aironet 3700i Firmware"	15.3\(3\)jc14 Search vendor "Cisco" for product "Aironet 3700i Firmware" and version "15.3\(3\)jc14"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 3700i Search vendor "Cisco" for product "Aironet 3700i"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet 3700i Firmware Search vendor "Cisco" for product "Aironet 3700i Firmware"	15.3\(3\)jd6 Search vendor "Cisco" for product "Aironet 3700i Firmware" and version "15.3\(3\)jd6"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 3700i Search vendor "Cisco" for product "Aironet 3700i"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet 3700p Firmware Search vendor "Cisco" for product "Aironet 3700p Firmware"	15.3\(3\)jc14 Search vendor "Cisco" for product "Aironet 3700p Firmware" and version "15.3\(3\)jc14"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 3700p Search vendor "Cisco" for product "Aironet 3700p"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet 3700p Firmware Search vendor "Cisco" for product "Aironet 3700p Firmware"	15.3\(3\)jd6 Search vendor "Cisco" for product "Aironet 3700p Firmware" and version "15.3\(3\)jd6"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 3700p Search vendor "Cisco" for product "Aironet 3700p"	-	-	Safe
Cisco Search vendor "Cisco"		Access Points Search vendor "Cisco" for product "Access Points"				< 8.2.170.0 Search vendor "Cisco" for product "Access Points" and version " < 8.2.170.0"		-		Affected
Cisco Search vendor "Cisco"		Access Points Search vendor "Cisco" for product "Access Points"				>= 8.3 < 8.3.150.0 Search vendor "Cisco" for product "Access Points" and version " >= 8.3 < 8.3.150.0"		-		Affected
Cisco Search vendor "Cisco"		Access Points Search vendor "Cisco" for product "Access Points"				>= 8.4 < 8.5.131.0 Search vendor "Cisco" for product "Access Points" and version " >= 8.4 < 8.5.131.0"		-		Affected
Cisco Search vendor "Cisco"		Access Points Search vendor "Cisco" for product "Access Points"				>= 8.6 < 8.8.100.0 Search vendor "Cisco" for product "Access Points" and version " >= 8.6 < 8.8.100.0"		-		Affected