CVE-2021-37577

Bluetooth LE and BR/EDR Secure Connections pairing and Secure Simple Pairing using the Passkey entry protocol in Bluetooth Core Specifications 2.1 through 5.3 may permit an unauthenticated man-in-the-middle attacker to identify the Passkey used during pairing by reflection of a crafted public key with the same X coordinate as the offered public key and by reflection of the authentication evidence of the initiating device, potentially permitting this attacker to complete authenticated pairing with the responding device using the correct Passkey for the pairing session. This is a related issue to CVE-2020-26558.

CVSS v3 6.8 MEDIUM

6.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.3 / Impact : 5.5

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://bluetooth.com
https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/passkey-impersonation/
https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/

Configurations

No configuration.

History

No history.

Information

Published : 2024-10-01 15:15

Updated : 2024-11-15 21:35

NVD link : CVE-2021-37577

Mitre link : CVE-2021-37577

CVE.ORG link : CVE-2021-37577

JSON object : View

Products Affected

No product.

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

{"id": "CVE-2021-37577", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.8, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.5, "exploitabilityScore": 1.3}]}, "published": "2024-10-01T15:15:06.423", "references": [{"url": "https://bluetooth.com", "source": "cve@mitre.org"}, {"url": "https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/passkey-impersonation/", "source": "cve@mitre.org"}, {"url": "https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/", "source": "cve@mitre.org"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-639"}]}], "descriptions": [{"lang": "en", "value": "Bluetooth LE and BR/EDR Secure Connections pairing and Secure Simple Pairing using the Passkey entry protocol in Bluetooth Core Specifications 2.1 through 5.3 may permit an unauthenticated man-in-the-middle attacker to identify the Passkey used during pairing by reflection of a crafted public key with the same X coordinate as the offered public key and by reflection of the authentication evidence of the initiating device, potentially permitting this attacker to complete authenticated pairing with the responding device using the correct Passkey for the pairing session. This is a related issue to CVE-2020-26558."}, {"lang": "es", "value": "El emparejamiento de conexiones seguras de Bluetooth LE y BR/EDR y el emparejamiento simple seguro mediante el protocolo de entrada de clave de acceso en las especificaciones b\u00e1sicas de Bluetooth 2.1 a 5.3 pueden permitir que un atacante intermediario no autenticado identifique la clave de acceso utilizada durante el emparejamiento mediante el reflejo de una clave p\u00fablica manipulada con la misma coordenada X que la clave p\u00fablica ofrecida y mediante el reflejo de la evidencia de autenticaci\u00f3n del dispositivo iniciador, lo que potencialmente permite que este atacante complete el emparejamiento autenticado con el dispositivo que responde utilizando la clave de acceso correcta para la sesi\u00f3n de emparejamiento. Este es un problema relacionado con CVE-2020-26558."}], "lastModified": "2024-11-15T21:35:01.120", "sourceIdentifier": "cve@mitre.org"}