CVE-2021-34149
The Bluetooth Classic implementation on the Texas Instruments CC256XCQFN-EM does not properly handle the reception of continuous LMP_AU_Rand packets, allowing attackers in radio range to trigger a denial of service (deadlock) of the device by flooding…
Does this matter?
Lower severity and a low EPSS score (0.50%). Track it; it rarely justifies an emergency change on its own.
Description
The Bluetooth Classic implementation on the Texas Instruments CC256XCQFN-EM does not properly handle the reception of continuous LMP_AU_Rand packets, allowing attackers in radio range to trigger a denial of service (deadlock) of the device by flooding it with LMP_AU_Rand packets after the paging procedure.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.50% probability · 42th percentile
- CISA KEV
- Not listed
- Affected
- ti/cc256xcqfn-em firmware
- Source
- cve@mitre.org
References
- https://dl.packetstormsecurity.net/papers/general/braktooth.pdfTechnical Description, Third Party Advisory
- https://www.ti.com/product/CC2564CProduct, Vendor Advisory
- https://www.ti.com/tool/CC256XC-BT-SP#primary-swProduct, Vendor Advisory
- https://dl.packetstormsecurity.net/papers/general/braktooth.pdfTechnical Description, Third Party Advisory
- https://www.ti.com/product/CC2564CProduct, Vendor Advisory
- https://www.ti.com/tool/CC256XC-BT-SP#primary-swProduct, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.