CVE-2020-26556

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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.

7.5 /10

CVSS v3 : 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
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:*:*:*:*:*:*:*
History

21 Nov 2024, 05:20

Type Values Removed Values Added
References () https://kb.cert.org/vuls/id/799380 - Third Party Advisory, US Government Resource () https://kb.cert.org/vuls/id/799380 - Third Party Advisory, US Government Resource
References () https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/ - Vendor Advisory () https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/ - Vendor Advisory
References () https://www.kb.cert.org/vuls/id/799380 - Third Party Advisory, US Government Resource () https://www.kb.cert.org/vuls/id/799380 - Third Party Advisory, US Government Resource

29 Apr 2022, 14:10

Type Values Removed Values Added
CPE cpe:2.3:a:bluetooth:bluetooth_core_specification:*:*:*:*:*:*:*:*
References (CERT-VN) https://www.kb.cert.org/vuls/id/799380 - (CERT-VN) https://www.kb.cert.org/vuls/id/799380 - Third Party Advisory, US Government Resource

29 Sep 2021, 09:15

Type Values Removed Values Added
References
  • (CERT-VN) https://www.kb.cert.org/vuls/id/799380 -

03 Jun 2021, 17:30

Type Values Removed Values Added
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
References (MISC) https://kb.cert.org/vuls/id/799380 - (MISC) https://kb.cert.org/vuls/id/799380 - Third Party Advisory, US Government Resource
CWE CWE-307
CPE cpe:2.3:a:bluetooth:mesh_profile:1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:bluetooth:mesh_profile:1.0.0:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : 2.9
v3 : 7.5

24 May 2021, 18:15

Type Values Removed Values Added
New CVE
Information

Published : 2021-05-24 18:15

Updated : 2024-11-21 05:20

NVD link : CVE-2020-26556

Mitre link : CVE-2020-26556

CVE.ORG link : CVE-2020-26556

JSON object : View

Products Affected

bluetooth

  • mesh_profile
  • bluetooth_core_specification
CWE
CWE-307

Improper Restriction of Excessive Authentication Attempts