CVE-2021-34149

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.

6.5

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.28%

Vendor Advisory ti.com Vendor Advisory ti.com

Affected: n/a n/a

References

Link	Tags
https://www.ti.com/tool/CC256XC-BT-SP#primary-sw	product vendor advisory
https://www.ti.com/product/CC2564C	product vendor advisory
https://dl.packetstormsecurity.net/papers/general/braktooth.pdf	third party advisory technical description

Frequently Asked Questions

What is the severity of CVE-2021-34149?: CVE-2021-34149 has been scored as a medium severity vulnerability.
How to fix CVE-2021-34149?: To fix CVE-2021-34149, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-34149 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-34149 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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