#VU53580 Security features bypass in Bluetooth Core Specification

Vulnerability identifier: #VU53580

Vulnerability risk: Low

CVSSv4.0: 0.4 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: N/A

CWE-ID: CWE-254

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Bluetooth Core Specification
Other software / Other software solutions

Vendor: Bluetooth SIG, Inc.

Description

The vulnerability allows a local attacker to compromise the target system.

The vulnerability exists due to the issue within the Authentication of the Bluetooth LE legacy pairing protocol. An attacker with physical access can reflect the confirmation and random numbers of a peer device in LE legacy pairing to successfully complete legacy authentication phase 2 without knowledge of the temporary key (TK).

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Bluetooth Core Specification: 4.0 - 5.2

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External links
https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/

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Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.