CVE-2019-9506 Detail

Current 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.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  8.1 HIGH
Vector:  CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Nist CVSS score does not match with CNA score
CNA:  CERT/CC
Base Score:  7.6 HIGH
Vector:  CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: It is possible that the NVD CVSS may not match that of the CNA. The most common reason for this is that publicly available information does not provide sufficient detail or that information simply was not available at the time the CVSS vector string was assigned.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
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 Mailing List  Third Party Advisory 
http://seclists.org/fulldisclosure/2019/Aug/13 Mailing List  Third Party Advisory 
http://seclists.org/fulldisclosure/2019/Aug/14 Mailing List  Third Party Advisory 
http://seclists.org/fulldisclosure/2019/Aug/15 Mailing List  Third Party Advisory 
http://www.cs.ox.ac.uk/publications/publication12404-abstract.html Third Party Advisory 
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/ Third Party Advisory 
https://www.kb.cert.org/vuls/id/918987/ Third Party Advisory  US Government Resource 
https://www.usenix.org/conference/usenixsecurity19/presentation/antonioli Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-310 Cryptographic Issues cwe source acceptance level NIST   Reference acceptance level CERT/CC  

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Change History

18 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-9506
NVD Published Date:
08/14/2019
NVD Last Modified:
08/28/2019
Source:
CERT/CC