CVE-2020-26556

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.

CVSS v3.0 7.5 HIGH
CVSS v2.0 2.9 LOW

7.5^/10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 1.6 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

2.9^/10

CVSS v2.0 : LOW

V2 Legend

Vector : AV:A/AC:M/Au:N/C:P/I:N/A:N

Exploitability : 5.5 / Impact : 2.9

Access Vector ADJACENT_NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

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

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:bluetooth:bluetooth_core_specification::::::::
	cpe:2.3:a:bluetooth:mesh_profile:1.0.0:::::::*
	cpe:2.3:a:bluetooth:mesh_profile:1.0.1:::::::*

Information

Published : 2021-05-24 11:15

Updated : 2022-04-29 07:10

NVD link : CVE-2020-26556

Mitre link : CVE-2020-26556

JSON object : View

CWE

CWE-307

Improper Restriction of Excessive Authentication Attempts

Products Affected

bluetooth

mesh_profile
bluetooth_core_specification

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7.5 /10