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Improper Authentication Affecting bluez package, versions <5.55-3.1

0.0
medium

Snyk CVSS

    Attack Complexity High

    Threat Intelligence

    EPSS 0.07% (29th percentile)
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NVD
4.2 medium
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SUSE
4.2 medium
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Red Hat
4.2 medium

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  • Snyk ID SNYK-DEBIAN11-BLUEZ-1300774
  • published 27 May 2021
  • disclosed 24 May 2021
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Introduced: 24 May 2021

CVE-2020-26558 Open this link in a new tab
CWE-287 Open this link in a new tab

How to fix?

Upgrade Debian:11 bluez to version 5.55-3.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bluez package and not the bluez package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

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.

References