CVE-2020-26557

Mesh Provisioning in the Bluetooth Mesh profile 1.0 and 1.0.1 may permit a nearby device (without possession of the AuthValue used in the provisioning protocol) to determine the AuthValue via a brute-force attack (unless the AuthValue is sufficiently random and changed each time).

CVSS v3 7.5 HIGH
CVSS v2.0 2.9 LOW

7.5^/10

CVSS v3 : HIGH

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

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

Configurations

Configuration 1 (hide)

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

History

12 Jul 2022, 17:42

Type	Values Removed	Values Added
CWE	~~CWE-863~~	CWE-287

03 Jun 2021, 17:29

Type	Values Removed	Values Added
CWE		CWE-863
References	~~(MISC) https://kb.cert.org/vuls/id/799380 -~~	(MISC) https://kb.cert.org/vuls/id/799380 - Third Party Advisory, US Government Resource
References	~~(MISC) https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/ -~~	(MISC) https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/ - Vendor Advisory
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : 2.9 v3 : 7.5
CPE		cpe:2.3:a:bluetooth:mesh_profile:1.0.0:::::::* cpe:2.3:a:bluetooth:mesh_profile:1.0.1:::::::*

24 May 2021, 18:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2021-05-24 18:15

Updated : 2023-12-10 13:55

NVD link : CVE-2020-26557

Mitre link : CVE-2020-26557

CVE.ORG link : CVE-2020-26557

JSON object : View

Products Affected

bluetooth

mesh_profile

CWE

CWE-287

Improper Authentication

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