Home/CVE/The Bluetooth BR/EDR specification up to and including version 5.1 permits sufficiently low encryption key length and do
CVE

CVE-2019-9506

The Bluetooth BR/EDR specification up to and including version 5.1 permits sufficiently low encryption key length and do

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.

HIGH · CVSS 8.1 EPSS 0.04145
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-327Use of a Broken or Risky Cryptographic Algorithm
▤

Affected Products & Versions

37
google androidall versions
apple iphone osall versions
apple mac os xall versions
apple tvosall versions
apple watchosall versions
canonical ubuntu linuxall versions
debian linuxall versions
opensuse leapall versions
▣

Scoring & Timeline

8.1
HIGH · CVSS v3.1 · cret@cert.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD14 Aug 2019 · 05:15 PM
CVSS VectorCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
⚑

Vendor Advisories

30
rhsaRHSA-2019:3517Moderate
suse-csafSUSE-SU-2020:0093-1
suse-csafSUSE-SU-2019:3295-1
rhsaRHSA-2019:3309Moderate
suse-csafSUSE-SU-2019:3200-1
🔗

References & Sources

21
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00036.htmlMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00037.htmlMailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2019/Aug/11Mailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2019/Aug/13Mailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2019/Aug/14Mailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2019/Aug/15Mailing ListThird Party Advisory
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