CVE-2020-10135

Legacy pairing and secure-connections pairing authentication in Bluetooth BR/EDR Core Specification v5.2 and earlier may allow an unauthenticated user to complete authentication without pairing credentials via adjacent access. An unauthenticated, adjacent attacker could impersonate a Bluetooth BR/EDR master or slave to pair with a previously paired remote device to successfully complete the authentication procedure without knowing the link key.

Score

CVSS 3.1 5.4 Medium

Status

Modified - cret@cert.org

Published

2020-05-19

Last modified

2024-09-17

Weaknesses

CWE-290, CWE-757

Affected products

• Bluetooth Core (Bluetooth)
• Bredr (Bluetooth)
• Leap (Opensuse)

References

• http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html
• http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00047.html
• http://packetstormsecurity.com/files/157922/Bluetooth-Impersonation-Attack-BIAS-Proof-Of-Concept.html
• http://seclists.org/fulldisclosure/2020/Jun/5
• https://francozappa.github.io/about-bias/
• https://kb.cert.org/vuls/id/647177/
• https://www.bluetooth.com/learn-about-bluetooth/bluetooth-technology/bluetooth-security/bias-vulnerability/