CVE-2021-34149 — MEDIUM (6.5)

Vulnerability 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 Score

6.5

MEDIUM

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Ti	Cc256Xcqfn-Em Firmware	-
Ti	Cc256Xcqfn-Em	-

References

https://dl.packetstormsecurity.net/papers/general/braktooth.pdfTechnical DescriptionThird Party Advisory
https://www.ti.com/product/CC2564CProductVendor Advisory
https://www.ti.com/tool/CC256XC-BT-SP#primary-swProductVendor Advisory
https://dl.packetstormsecurity.net/papers/general/braktooth.pdfTechnical DescriptionThird Party Advisory
https://www.ti.com/product/CC2564CProductVendor Advisory
https://www.ti.com/tool/CC256XC-BT-SP#primary-swProductVendor Advisory

FAQ

What is CVE-2021-34149?

CVE-2021-34149 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 den...

How severe is CVE-2021-34149?

CVE-2021-34149 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-34149?

Check the references section above for vendor advisories and patch information. Affected products include: Ti Cc256Xcqfn-Em Firmware, Ti Cc256Xcqfn-Em.