DoS vulnerability in JBL Flip 4

Affected devices running firmware versions prior to 4.1.0 may crash and become unavailable when receiving specific malformed Bluetooth messages from an unauthenticated attacker.

JBL: Improper BLE security configurations and lack of authentication on the device's GATT server

Due to improper BLE security configurations on the device's GATT server, an adjacent unauthenticated attacker can read and write device control commands through the mobile app service wich could render the device unusable.

JBL: Improper validation of ICM field in connection requests

An unauthorised attacker within bluetooth range may use an improper validation during the BLE connection request to deadlock the affected devices.

JBL soundbar multibeam 5.1 - CWE-798: Use of Hard-coded Credentials

JBL soundbar multibeam 5.1 - CWE-798: Use of Hard-coded Credentials

JBL Go 2 devices through 2021-08-09 allow remote attackers to recover speech signals from an LED on the device, via a telescope and an electro-optical sensor, aka a "Glowworm" attack. The power indicator LED of the speakers is connected directly to the power line, as a result, the intensity of a device's power indicator LED is correlative to the power consumption. The sound played by the speakers affects their power consumption and as a result is also correlative to the light intensity of the LEDs. By analyzing measurements obtained from an electro-optical sensor directed at the power indicator LEDs of the speakers, we can recover the sound played by them.

The Bluetooth Classic implementation on JBL TUNE500BT devices does not properly handle the reception of continuous unsolicited LMP responses, allowing attackers in radio range to trigger a denial of service and shutdown a device by flooding the target device with LMP Feature Response data.