CVE-2021-34150 : What You Need to Know

Bluetooth Classic implementation on Bluetrum AB5301A devices is vulnerable to a crafted LMP packet attack that can disrupt BT connectivity. Learn about the impact, technical details, and mitigation steps.

Understanding CVE-2021-34150

This CVE involves a vulnerability in Bluetooth Classic implementation on Bluetrum AB5301A devices.

What is CVE-2021-34150?

The issue arises from the mishandling of oversized DM1 LMP packets, enabling attackers to disrupt Bluetooth connections in the device's radio range.

The Impact of CVE-2021-34150

Attackers can prevent new BT connections by sending a crafted LMP packet, leading to disabling of inquiry and page scan procedures until a manual device restart is performed.

Technical Details of CVE-2021-34150

This section provides insight into the vulnerability description, affected systems, and the exploitation mechanism.

Vulnerability Description

Bluetrum AB5301A devices are susceptible to disruption of BT connectivity by malicious LMP packets.

Affected Systems and Versions

All Bluetrum AB5301A devices with unknown firmware versions are impacted by this vulnerability.

Exploitation Mechanism

Attackers can exploit the flaw by sending oversized DM1 LMP packets to disrupt Bluetooth connections.

Mitigation and Prevention

Discover the immediate steps and best practices to secure your systems against CVE-2021-34150.

Immediate Steps to Take

Users should perform a manual device restart to restore Bluetooth connectivity if disruption occurs.

Long-Term Security Practices

Regularly check for firmware updates from Bluetrum and apply patches promptly to mitigate the vulnerability.

Patching and Updates

Stay informed about security advisories and implement recommended updates to prevent potential Bluetooth disruptions.