CVE-2019-1834

Cisco Aironet Series Access Points Denial of Service Vulnerability

Severity Score

6.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

A vulnerability in the internal packet processing of Cisco Aironet Series Access Points (APs) could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected AP if the switch interface where the AP is connected has port security configured. The vulnerability exists because the AP forwards some malformed wireless client packets outside of the Control and Provisioning of Wireless Access Points (CAPWAP) tunnel. An attacker could exploit this vulnerability by sending crafted wireless packets to an affected AP. A successful exploit could allow the attacker to trigger a security violation on the adjacent switch port, which could result in a DoS condition. Note: Though the Common Vulnerability Scoring System (CVSS) score corresponds to a High Security Impact Rating (SIR), this vulnerability is considered Medium because a workaround is available and exploitation requires a specific switch configuration. There are workarounds that address this vulnerability.

Una vulnerabilidad en el procesamiento interno de paquetes de Aironet Series Access Points (APs) de Cisco, podría permitir que un atacante no identificado localmente genere una condición de denegación de servicio (DoS) en un dispositivo AP afectado si la interfaz del conmutador donde está conectado el dispositivo AP tiene una seguridad de puerto configurada. La vulnerabilidad existe porque el AP corre en algunos paquetes del cliente de red inalámbrica malformados fuera del control y del aprovisionamiento del túnel de los puntos de acceso inalámbricos (CAPWAP). Un atacante podría aprovechar esta vulnerabilidad enviando paquetes inalámbricos creados a un dispositivo AP afectado. Una operación con éxito podría permitir al atacante desencadenar una violación de seguridad en el puerto del switch adyacente, lo que podría resultar en una condición de DoS. Nota: aunque la puntuación del sistema común de puntuación de vulnerabilidad (CVSS) corresponde a una clasificación de impacto de alta seguridad (SIR), esta vulnerabilidad se considera Media porque hay una solución disponible y la explotación requiere una configuración de conmutador específica. Hay soluciones que abordan esta vulnerabilidad.

*Credits: N/A

CVSS Scores

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

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

Partial

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2018-12-06 CVE Reserved
2019-04-18 CVE Published
2024-09-07 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/108000	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190417-air-ap-dos	2019-10-09

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 Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.5 < 8.5.140.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.5 < 8.5.140.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 1542d Search vendor "Cisco" for product "Aironet 1542d"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.5 < 8.5.140.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.5 < 8.5.140.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 1542i Search vendor "Cisco" for product "Aironet 1542i"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.5 < 8.5.140.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.5 < 8.5.140.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 1562d Search vendor "Cisco" for product "Aironet 1562d"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.5 < 8.5.140.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.5 < 8.5.140.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 1562e Search vendor "Cisco" for product "Aironet 1562e"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.5 < 8.5.140.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.5 < 8.5.140.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 1562i Search vendor "Cisco" for product "Aironet 1562i"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.5 < 8.5.140.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.5 < 8.5.140.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 1800i Search vendor "Cisco" for product "Aironet 1800i"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.5 < 8.5.140.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.5 < 8.5.140.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 2800e Search vendor "Cisco" for product "Aironet 2800e"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.5 < 8.5.140.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.5 < 8.5.140.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 2800i Search vendor "Cisco" for product "Aironet 2800i"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.5 < 8.5.140.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.5 < 8.5.140.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 3800e Search vendor "Cisco" for product "Aironet 3800e"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.5 < 8.5.140.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.5 < 8.5.140.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 3800i Search vendor "Cisco" for product "Aironet 3800i"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.5 < 8.5.140.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.5 < 8.5.140.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 3800p Search vendor "Cisco" for product "Aironet 3800p"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.6.101.0 < 8.8.111.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.6.101.0 < 8.8.111.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 1542d Search vendor "Cisco" for product "Aironet 1542d"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.6.101.0 < 8.8.111.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.6.101.0 < 8.8.111.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 1542i Search vendor "Cisco" for product "Aironet 1542i"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.6.101.0 < 8.8.111.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.6.101.0 < 8.8.111.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 1562d Search vendor "Cisco" for product "Aironet 1562d"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.6.101.0 < 8.8.111.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.6.101.0 < 8.8.111.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 1562e Search vendor "Cisco" for product "Aironet 1562e"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.6.101.0 < 8.8.111.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.6.101.0 < 8.8.111.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 1562i Search vendor "Cisco" for product "Aironet 1562i"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.6.101.0 < 8.8.111.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.6.101.0 < 8.8.111.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 1800i Search vendor "Cisco" for product "Aironet 1800i"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.6.101.0 < 8.8.111.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.6.101.0 < 8.8.111.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 2800e Search vendor "Cisco" for product "Aironet 2800e"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.6.101.0 < 8.8.111.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.6.101.0 < 8.8.111.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 2800i Search vendor "Cisco" for product "Aironet 2800i"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.6.101.0 < 8.8.111.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.6.101.0 < 8.8.111.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 3800e Search vendor "Cisco" for product "Aironet 3800e"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.6.101.0 < 8.8.111.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.6.101.0 < 8.8.111.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 3800i Search vendor "Cisco" for product "Aironet 3800i"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.6.101.0 < 8.8.111.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.6.101.0 < 8.8.111.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 3800p Search vendor "Cisco" for product "Aironet 3800p"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.8.120.0 < 8.9.100.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.8.120.0 < 8.9.100.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 1542d Search vendor "Cisco" for product "Aironet 1542d"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.8.120.0 < 8.9.100.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.8.120.0 < 8.9.100.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 1542i Search vendor "Cisco" for product "Aironet 1542i"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.8.120.0 < 8.9.100.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.8.120.0 < 8.9.100.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 1562d Search vendor "Cisco" for product "Aironet 1562d"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.8.120.0 < 8.9.100.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.8.120.0 < 8.9.100.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 1562e Search vendor "Cisco" for product "Aironet 1562e"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.8.120.0 < 8.9.100.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.8.120.0 < 8.9.100.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 1562i Search vendor "Cisco" for product "Aironet 1562i"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.8.120.0 < 8.9.100.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.8.120.0 < 8.9.100.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 1800i Search vendor "Cisco" for product "Aironet 1800i"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.8.120.0 < 8.9.100.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.8.120.0 < 8.9.100.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 2800e Search vendor "Cisco" for product "Aironet 2800e"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.8.120.0 < 8.9.100.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.8.120.0 < 8.9.100.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 2800i Search vendor "Cisco" for product "Aironet 2800i"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.8.120.0 < 8.9.100.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.8.120.0 < 8.9.100.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 3800e Search vendor "Cisco" for product "Aironet 3800e"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.8.120.0 < 8.9.100.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.8.120.0 < 8.9.100.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 3800i Search vendor "Cisco" for product "Aironet 3800i"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	>= 8.8.120.0 < 8.9.100.0 Search vendor "Cisco" for product "Aironet Access Point Firmware" and version " >= 8.8.120.0 < 8.9.100.0"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 3800p Search vendor "Cisco" for product "Aironet 3800p"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	8.5\(131.0\) Search vendor "Cisco" for product "Aironet Access Point Firmware" and version "8.5\(131.0\)"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 1850e Search vendor "Cisco" for product "Aironet 1850e"	-	-	Safe
Cisco Search vendor "Cisco"	Aironet Access Point Firmware Search vendor "Cisco" for product "Aironet Access Point Firmware"	8.5\(131.0\) Search vendor "Cisco" for product "Aironet Access Point Firmware" and version "8.5\(131.0\)"	-	Affected	in	Cisco Search vendor "Cisco"	Aironet 1850i Search vendor "Cisco" for product "Aironet 1850i"	-	-	Safe