CVE-2020-26559 — HIGH (8.8)

Vulnerability Description

Bluetooth Mesh Provisioning in the Bluetooth Mesh profile 1.0 and 1.0.1 may permit a nearby device (participating in the provisioning protocol) to identify the AuthValue used given the Provisioner’s public key, and the confirmation number and nonce provided by the provisioning device. This could permit a device without the AuthValue to complete provisioning without brute-forcing the AuthValue.

CVSS Score

8.8

HIGH

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

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Bluetooth	Mesh Profile	1.0.0

Related Weaknesses (CWE)

CWE-863

References

https://kb.cert.org/vuls/id/799380Third Party AdvisoryUS Government Resource
https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-securitVendor Advisory
https://kb.cert.org/vuls/id/799380Third Party AdvisoryUS Government Resource
https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-securitVendor Advisory
https://www.kb.cert.org/vuls/id/799380

FAQ

What is CVE-2020-26559?

CVE-2020-26559 is a vulnerability with a CVSS score of 8.8 (HIGH). Bluetooth Mesh Provisioning in the Bluetooth Mesh profile 1.0 and 1.0.1 may permit a nearby device (participating in the provisioning protocol) to identify the AuthValue used given the Provisioner’s p...

How severe is CVE-2020-26559?

CVE-2020-26559 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-26559?

Check the references section above for vendor advisories and patch information. Affected products include: Bluetooth Mesh Profile.