CVE-2019-9506
Blutooth BR/EDR specification does not specify sufficient encryption key length and allows an attacker to influence key length negotiation
- State
- Published
- Severity
- 7.6 High
- Published
- Aug 14, 2019
- Updated
- Sep 16, 2024
- Reserved
- Mar 1, 2019
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.0 | 7.6 High | CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L | certcc |
Weaknesses
- CWE-310 Cryptographic Issues
Affected Products
| Product | Versions |
|---|---|
BR/EDRBluetooth |
|
References
- VU#918987third-party-advisory
- http://www.cs.ox.ac.uk/publications/publication12404-abstract.html
- https://www.usenix.org/conference/usenixsecurity19/presentation/antonioli
- https://www.bluetooth.com/security/statement-key-negotiation-of-bluetooth/
- 20190816 APPLE-SA-2019-8-13-3 Additional information for APPLE-SA-2019-7-22-4 watchOS 5.3mailing-list
- 20190816 APPLE-SA-2019-8-13-1 Additional information for APPLE-SA-2019-7-22-2 macOS Mojave 10.14.6, Security Update 2019-004 High Sierra, Security Update 2019-004 Sierramailing-list
- 20190816 APPLE-SA-2019-8-13-2 Additional information for APPLE-SA-2019-7-22-1 iOS 12.4mailing-list
- 20190816 APPLE-SA-2019-8-13-4 Additional information for APPLE-SA-2019-7-22-5 tvOS 12.4mailing-list
- http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20190828-01-knob-en
- USN-4115-1vendor-advisory
- USN-4118-1vendor-advisory
- [debian-lts-announce] 20190914 [SECURITY] [DLA 1919-1] linux-4.9 security updatemailing-list
- [debian-lts-announce] 20190915 [SECURITY] [DLA 1919-2] linux-4.9 security updatemailing-list
- [debian-lts-announce] 20190925 [SECURITY] [DLA 1930-1] linux security updatemailing-list
- USN-4147-1vendor-advisory
- RHSA-2019:2975vendor-advisory
- openSUSE-SU-2019:2307vendor-advisory
- openSUSE-SU-2019:2308vendor-advisory
- RHSA-2019:3076vendor-advisory
- RHSA-2019:3055vendor-advisory
- RHSA-2019:3089vendor-advisory
- RHSA-2019:3187vendor-advisory
- RHSA-2019:3165vendor-advisory
- RHSA-2019:3217vendor-advisory
- RHSA-2019:3220vendor-advisory
- RHSA-2019:3231vendor-advisory
- RHSA-2019:3218vendor-advisory
- RHSA-2019:3309vendor-advisory
- RHSA-2019:3517vendor-advisory
- RHSA-2020:0204vendor-advisory
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