Vulnerability Details : 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.
Vulnerability category: Denial of service
Products affected by CVE-2021-34149
- cpe:2.3:o:ti:cc256xcqfn-em_firmware:-:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-34149
0.07%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 31 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-34149
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
3.3
|
LOW | AV:A/AC:L/Au:N/C:N/I:N/A:P |
6.5
|
2.9
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
2.8
|
3.6
|
NIST |
References for CVE-2021-34149
-
https://www.ti.com/product/CC2564C
CC2564C data sheet, product information and support | TI.comProduct;Vendor Advisory
-
https://www.ti.com/tool/CC256XC-BT-SP#primary-sw
CC256XC-BT-SP Driver or library | TI.comProduct;Vendor Advisory
-
https://dl.packetstormsecurity.net/papers/general/braktooth.pdf
Technical Description;Third Party Advisory
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