CVE-2021-34150

Description

The Bluetooth Classic implementation on Bluetrum AB5301A devices with unknown firmware versions does not properly handle the reception of oversized DM1 LMP packets while no other BT connections are active, allowing attackers in radio range to prevent new BT connections (disabling the AB5301A inquiry and page scan procedures) via a crafted LMP packet. The user needs to manually perform a power cycle (restart) of the device to restore BT connectivity.

6.5

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.13%

Vendor Advisory bluetrum.com

Affected: n/a n/a

References

Link	Tags
http://www.bluetrum.com/product/ab5301a.html	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-2021-34150?: CVE-2021-34150 has been scored as a medium severity vulnerability.
How to fix CVE-2021-34150?: To fix CVE-2021-34150, 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-2021-34150 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-34150 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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