The Syrus4 IoT gateway utilizes an unsecured MQTT server to download and execute arbitrary commands, allowing a remote unauthenticated attacker to execute code on any Syrus4 device connected to the cloud service. The MQTT server also leaks the location, video and diagnostic data from each connected device. An attacker who knows the IP address of the server is able to connect and perform the following operations: * Get location data of the vehicle the device is connected to * Send CAN bus messages via the ECU module ( https://syrus.digitalcomtech.com/docs/ecu-1 https://syrus.digitalcomtech.com/docs/ecu-1 ) * Immobilize the vehicle via the safe-immobilizer module ( https://syrus.digitalcomtech.com/docs/system-tools#safe-immobilization https://syrus.digitalcomtech.com/docs/system-tools#safe-immobilization ) * Get live video through the connected video camera * Send audio messages to the driver ( https://syrus.digitalcomtech.com/docs/system-tools#apx-tts https://syrus.digitalcomtech.com/docs/system-tools#apx-tts )
The MQTT server used by the Syrus 4G cloud service does not require authentication — anyone who knows the server's IP address can connect to it. Through this connection, an attacker can send commands that the device retrieves and executes without any verification of their source. The lack of transmission encryption (CWE-319) additionally means that data transmitted by the device — including vehicle location and camera footage — is accessible to third parties. This mechanism also includes the ability to send CAN bus messages to the vehicle's ECU module and remotely immobilize the vehicle.
An attacker can remotely execute arbitrary code on any Syrus 4G device connected to the cloud service, gain access to vehicle location, camera footage and diagnostic data, and can even physically immobilize the vehicle or send voice messages to the driver.
Patches available from the manufacturer should be applied according to the references. As temporary measures, it is recommended to isolate devices from the public Internet, restrict access to the MQTT server exclusively to trusted IP addresses, and monitor MQTT traffic for unauthorized connections.
Digitalcomtech Syrus 4G IoT Telematics Gateway devices (firmware and hardware) connected to the manufacturer's cloud service — specific firmware versions indicated in the manufacturer's references
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HDigitalcomtech Syrus 4g Iot Telematics Gateway
HWDigitalcomtechwszystkie wersjeDigitalcomtech Syrus 4g Iot Telematics Gateway Firmware
OSDigitalcomtechapex-23.43.2