CVE-2019-9506

Summary

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.

Affected Software

VendorProductVersion RangeStatus
BluetoothBR/EDR5.1 <= 5.1affected

Weaknesses

  • CWE-310: CWE-310 Cryptographic Issues

Workarounds

Bluetooth SIG Expedited Errata Correction 11838

ADP Enrichment

CVE Program Container

Additional References

References