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 it with LMP_AU_Rand packets after the paging procedure.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
6.5 MEDIUM
ADJACENT_NETWORK
LOW
NONE
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 50%
VendorProductVersion
ticc256xcqfn-em_firmware
-
𝑥
= Vulnerable software versions
References
https://dl.packetstormsecurity.net/papers/general/braktooth.pdf
https://www.ti.com/product/CC2564C
https://www.ti.com/tool/CC256XC-BT-SP#primary-sw
https://dl.packetstormsecurity.net/papers/general/braktooth.pdf
https://www.ti.com/product/CC2564C
https://www.ti.com/tool/CC256XC-BT-SP#primary-sw