// For flags

CVE-2020-3429

Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family WPA Denial of Service Vulnerability

Severity Score

6.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

A vulnerability in the WPA2 and WPA3 security implementation of Cisco IOS XE Wireless Controller Software for the Cisco Catalyst 9000 Family could allow an unauthenticated, adjacent attacker to cause denial of service (DoS) condition on an affected device. The vulnerability is due to incorrect packet processing during the WPA2 and WPA3 authentication handshake when configured for dot1x or pre-shared key (PSK) authentication key management (AKM) with 802.11r BSS Fast Transition (FT) enabled. An attacker could exploit this vulnerability by sending a crafted authentication packet to an affected device. A successful exploit could cause an affected device to reload, resulting in a DoS condition.

Una vulnerabilidad en la implementación de seguridad WPA2 y WPA3 de Cisco IOS XE Wireless Controller Software para Cisco Catalyst 9000 Family, podría permitir a un atacante adyacente no autenticado causar una condición de denegación de servicio (DoS) en un dispositivo afectado. La vulnerabilidad es debido al procesamiento incorrecto de paquetes durante el protocolo de enlace de autenticación WPA2 y WPA3 cuando se configura para la administración de claves de autenticación (AKM) dot1x o de clave precompartida (PSK) con 802.11r BSS Fast Transition (FT) habilitado. Un atacante podría explotar esta vulnerabilidad mediante el envío de un paquete de autenticación diseñado hacia un dispositivo afectado. Una explotación con éxito podría hacer que un dispositivo afectado se recargue, resultando en una condición DoS.

*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
Medium
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
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
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Cisco
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Ios Xe
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16.12.1s
Search vendor "Cisco" for product "Ios Xe" and version "16.12.1s"
-
Affected
in Cisco
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Catalyst 9300
Search vendor "Cisco" for product "Catalyst 9300"
--
Safe
Cisco
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Ios Xe
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16.12.1s
Search vendor "Cisco" for product "Ios Xe" and version "16.12.1s"
-
Affected
in Cisco
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Catalyst 9400
Search vendor "Cisco" for product "Catalyst 9400"
--
Safe
Cisco
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Ios Xe
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16.12.1s
Search vendor "Cisco" for product "Ios Xe" and version "16.12.1s"
-
Affected
in Cisco
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Catalyst 9500
Search vendor "Cisco" for product "Catalyst 9500"
--
Safe
Cisco
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Ios Xe
Search vendor "Cisco" for product "Ios Xe"
16.12.1s
Search vendor "Cisco" for product "Ios Xe" and version "16.12.1s"
-
Affected
in Cisco
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Catalyst 9800-40
Search vendor "Cisco" for product "Catalyst 9800-40"
--
Safe
Cisco
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Ios Xe
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16.12.1s
Search vendor "Cisco" for product "Ios Xe" and version "16.12.1s"
-
Affected
in Cisco
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Catalyst 9800-80
Search vendor "Cisco" for product "Catalyst 9800-80"
--
Safe
Cisco
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Ios Xe
Search vendor "Cisco" for product "Ios Xe"
16.12.1s
Search vendor "Cisco" for product "Ios Xe" and version "16.12.1s"
-
Affected
in Cisco
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Catalyst 9800-cl
Search vendor "Cisco" for product "Catalyst 9800-cl"
--
Safe
Cisco
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Ios Xe
Search vendor "Cisco" for product "Ios Xe"
16.12.1s
Search vendor "Cisco" for product "Ios Xe" and version "16.12.1s"
-
Affected
in Cisco
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Catalyst 9800-l
Search vendor "Cisco" for product "Catalyst 9800-l"
--
Safe