CVE-2020-26556

Common vulnerabilities & exposures (CVE)

CVE database CVE database blogpost Release & EoL database

Published at: - 24-05-2021 08:15

Last modified: - 29-04-2022 04:10

Total changes: - 4

Description

Mesh Provisioning in the Bluetooth Mesh profile 1.0 and 1.0.1 may permit a nearby device, able to conduct a successful brute-force attack on an insufficiently random AuthValue before the provisioning procedure times out, to complete authentication by leveraging Malleable Commitment.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

High

Attack complexity

Adjacent

Attack vector

High

Availability

High

Confidentiality

High

Integrity

None

Privileges required

Unchanged

Scope

None

User interaction

7.5

Base score

1.6

5.9

Exploitability score

Impact score

Verification logic

vendor=bluetooth AND product=bluetooth_core_specification AND versionEndIncluding=5.2 AND versionStartIncluding=1.0b

vendor=bluetooth AND product=mesh_profile AND version=1.0.0

vendor=bluetooth AND product=mesh_profile AND version=1.0.1

Reference

https://kb.cert.org/vuls/id/799380
https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/
VU#799380-Third Party Advisory, US Government Resource

Keywords

CVE-2020-26556

Common vulnerabilities & exposures (CVE)

Description

Common Vulnerability Scoring System (CVSS)

Verification logic

Reference

NVD

CVE-2020-26556

CVE

Common vulnerabilities & exposures

CVSS

Common vulnerability scoring system

Security

Vulnerabilities

Exposures