Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.025
EPSS Ranking 84.4%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 2.9
References
- https://kb.cert.org/vuls/id/799380
- https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/
- https://www.kb.cert.org/vuls/id/799380
- https://kb.cert.org/vuls/id/799380
- https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/
- https://www.kb.cert.org/vuls/id/799380
Products affected by CVE-2020-26556
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cpe:2.3:a:bluetooth:bluetooth_core_specification:1.1b
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cpe:2.3:a:bluetooth:bluetooth_core_specification:1.2
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cpe:2.3:a:bluetooth:bluetooth_core_specification:2.0
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cpe:2.3:a:bluetooth:bluetooth_core_specification:2.1
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cpe:2.3:a:bluetooth:bluetooth_core_specification:3.0
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cpe:2.3:a:bluetooth:bluetooth_core_specification:4.0
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cpe:2.3:a:bluetooth:bluetooth_core_specification:4.1
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cpe:2.3:a:bluetooth:bluetooth_core_specification:4.2
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cpe:2.3:a:bluetooth:bluetooth_core_specification:5.0
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cpe:2.3:a:bluetooth:bluetooth_core_specification:5.1
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cpe:2.3:a:bluetooth:bluetooth_core_specification:5.2
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cpe:2.3:a:bluetooth:mesh_profile:1.0.0
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cpe:2.3:a:bluetooth:mesh_profile:1.0.1