CVE Vulnerabilities

CVE-2020-26558

Improper Authentication

Published: May 24, 2021 | Modified: Nov 07, 2023
CVSS 3.x
4.2
MEDIUM
Source:
NVD
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
CVSS 2.x
4.3 MEDIUM
AV:A/AC:M/Au:N/C:P/I:P/A:N
RedHat/V2
RedHat/V3
Ubuntu

Bluetooth LE and BR/EDR secure pairing in Bluetooth Core Specification 2.1 through 5.2 may permit a nearby man-in-the-middle attacker to identify the Passkey used during pairing (in the Passkey authentication procedure) by reflection of the public key and 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. The attack methodology determines the Passkey value one bit at a time.

Weakness

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

Affected Software

Name Vendor Start Version End Version
Bluetooth_core_specification Bluetooth 2.1 (including) 5.2 (including)

Potential Mitigations

References