CVE-2019-9506 Information

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.

CVSS Vector

CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Reference

http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00036.html http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00037.html http://seclists.org/fulldisclosure/2019/Aug/11 http://seclists.org/fulldisclosure/2019/Aug/13 http://seclists.org/fulldisclosure/2019/Aug/14 http://seclists.org/fulldisclosure/2019/Aug/15 http://www.cs.ox.ac.uk/publications/publication12404-abstract.html http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20190828-01-knob-en https://access.redhat.com/errata/RHSA-2019:2975 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-2019:3165 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-2019:3220 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 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/4115-1/ https://usn.ubuntu.com/4118-1/ https://usn.ubuntu.com/4147-1/ https://www.bluetooth.com/security/statement-key-negotiation-of-bluetooth/ https://www.kb.cert.org/vuls/id/918987/ https://www.usenix.org/conference/usenixsecurity19/presentation/antonioli

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

NONE

Base Severity

8.1