CVE-2019-9506

Description

The Bluetooth BR/EDR specification up to and including version 5.1 permits sufficiently low encryption key length and does not prevent an attacker from influencing the key length negotiation. This allows practical brute-force attacks (aka "KNOB") that can decrypt traffic and inject arbitrary ciphertext without the victim noticing.

References

https://www.bluetooth.com/security/statement-key-negotiation-of-bluetooth/

https://www.usenix.org/conference/usenixsecurity19/presentation/antonioli

http://www.cs.ox.ac.uk/publications/publication12404-abstract.html

https://www.kb.cert.org/vuls/id/918987/

http://seclists.org/fulldisclosure/2019/Aug/13

http://seclists.org/fulldisclosure/2019/Aug/14

http://seclists.org/fulldisclosure/2019/Aug/11

http://seclists.org/fulldisclosure/2019/Aug/15

http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20190828-01-knob-en

https://usn.ubuntu.com/4115-1/

https://usn.ubuntu.com/4118-1/

https://lists.debian.org/debian-lts-announce/2019/09/msg00014.html

https://lists.debian.org/debian-lts-announce/2019/09/msg00015.html

https://lists.debian.org/debian-lts-announce/2019/09/msg00025.html

https://usn.ubuntu.com/4147-1/

https://access.redhat.com/errata/RHSA-2019:2975

http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00037.html

http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00036.html

https://access.redhat.com/errata/RHSA-2019:3055

https://access.redhat.com/errata/RHSA-2019:3076

https://access.redhat.com/errata/RHSA-2019:3089

https://access.redhat.com/errata/RHSA-2019:3187

https://access.redhat.com/errata/RHSA-2019:3217

https://access.redhat.com/errata/RHSA-2019:3218

https://access.redhat.com/errata/RHSA-2019:3165

https://access.redhat.com/errata/RHSA-2019:3220

https://access.redhat.com/errata/RHSA-2019:3231

https://access.redhat.com/errata/RHSA-2019:3309

https://access.redhat.com/errata/RHSA-2019:3517

https://access.redhat.com/errata/RHSA-2020:0204

Details

Risk Information

CVSS v2

CVSS v3