CVE-2020-10135
kernel: bluetooth: BR/EDR Bluetooth Impersonation Attacks (BIAS)
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 18, 2020
Updated · July 21, 2026
Description
A flaw was discovered in the Bluetooth protocol affecting the Bluetooth BR/EDR authentication. An attacker with physical access to the Bluetooth connection could perform a spoofing attack impersonating the address of a previously paired remote device. This attack may result in the attacking device completing the authentication procedure successfully despite not possessing the link key. This flaw, in turn, could permit an attacker to initiate the Bluetooth Key Negotiation (KNOB) attack more efficiently, potentially gaining full access as the remote paired device.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Enforce the Secure Connections Only mode for implementations that do not require support for pairing with legacy devices. Disabling Bluetooth may be a suitable alternative for some environments, please refer to the Red Hat knowledgebase solution [1] for how to disable Bluetooth in Red Hat Enterprise Linux.
[1] https://access.redhat.com/solutions/2682931
CVSS / CWE
CVSS 3.1 · 5.4CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE-290 · Authentication Bypass by Spoofing