UBUNTU-CVE-2019-9506
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.
02 / AFFECTED SOFTWARE
Affected packages
65 explicit affected versions
24 explicit affected versions
6 explicit affected versions
57 explicit affected versions
191 explicit affected versions
29 explicit affected versions
11 explicit affected versions
1 explicit affected versions
34 explicit affected versions
1 explicit affected versions
1 explicit affected versions
12 explicit affected versions
1 explicit affected versions
4 explicit affected versions
10 explicit affected versions
11 explicit affected versions
34 explicit affected versions
10 explicit affected versions
1 explicit affected versions
7 explicit affected versions
23 explicit affected versions
11 explicit affected versions
67 explicit affected versions
30 explicit affected versions
35 explicit affected versions
95 explicit affected versions
51 explicit affected versions
1 explicit affected versions
1 explicit affected versions
54 explicit affected versions
12 explicit affected versions
26 explicit affected versions
27 explicit affected versions
75 explicit affected versions
55 explicit affected versions
9 explicit affected versions
21 explicit affected versions
15 explicit affected versions
1 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://knobattack.com/
- https://ubuntu.com/security/CVE-2019-9506
- https://ubuntu.com/security/notices/USN-4115-1
- https://ubuntu.com/security/notices/USN-4118-1
- https://ubuntu.com/security/notices/USN-4147-1
- https://www.bluetooth.com/security/statement-key-negotiation-of-bluetooth/
- https://www.cve.org/CVERecord?id=CVE-2019-9506
- https://www.usenix.org/conference/usenixsecurity19/presentation/antonioli