CVE-2020-10134

Bluetooth devices supporting LE and specific BR/EDR implementations are vulnerable to method confusion attacks

Severity Score

6.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Pairing in Bluetooth® Core v5.2 and earlier may permit an unauthenticated attacker to acquire credentials with two pairing devices via adjacent access when the unauthenticated user initiates different pairing methods in each peer device and an end-user erroneously completes both pairing procedures with the MITM using the confirmation number of one peer as the passkey of the other. An adjacent, unauthenticated attacker could be able to initiate any Bluetooth operation on either attacked device exposed by the enabled Bluetooth profiles. This exposure may be limited when the user must authorize certain access explicitly, but so long as a user assumes that it is the intended remote device requesting permissions, device-local protections may be weakened.

El emparejamiento en Bluetooth® Core versiones v5.2 y anteriores, puede permitir a un atacante no autenticado adquirir credenciales con dos dispositivos de emparejamiento mediante un acceso adyacente cuando un usuario no autenticado inicia diferentes métodos de emparejamiento en cada dispositivo homólogo y un usuario final completa erróneamente ambos procedimientos de emparejamiento con la técnica MITM usando el número de confirmación de un peer como clave de acceso del otro. Un atacante adyacente no autenticado podría ser capaz de iniciar cualquier operación de Bluetooth en cualquier dispositivo atacado expuesto por los perfiles de Bluetooth habilitados. Esta exposición puede estar limitada cuando el usuario debe autorizar determinado acceso explícitamente, pero siempre y cuando el usuario asuma que es el dispositivo remoto deseado que requiera permisos, las protecciones locales del dispositivo pueden estar debilitadas.

*Credits: Thanks to Ludwig Peuckert and Maximilian von Tschirschnitz for reporting this vulnerability.

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

Low

Availability

None

Attack Vector

Adjacent

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-03-05 CVE Reserved
2020-05-19 CVE Published
2023-03-08 EPSS Updated
2024-09-16 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-351: Insufficient Type Distinction
CWE-436: Interpretation Conflict

CAPEC

References (2)

URL	Tag	Source
https://kb.cert.org/vuls/id/534195	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://www.bluetooth.com/learn-about-bluetooth/bluetooth-technology/bluetooth-security/method-vulnerability	2020-05-21

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Bluetooth Search vendor "Bluetooth"		Bluetooth Core Search vendor "Bluetooth" for product "Bluetooth Core"				<= 5.2 Search vendor "Bluetooth" for product "Bluetooth Core" and version " <= 5.2"		br		Affected
Bluetooth Search vendor "Bluetooth"		Bluetooth Core Search vendor "Bluetooth" for product "Bluetooth Core"				<= 5.2 Search vendor "Bluetooth" for product "Bluetooth Core" and version " <= 5.2"		edr		Affected
Bluetooth Search vendor "Bluetooth"		Bluetooth Core Search vendor "Bluetooth" for product "Bluetooth Core"				<= 5.2 Search vendor "Bluetooth" for product "Bluetooth Core" and version " <= 5.2"		le		Affected