Executive Summary

This vulnerability involves uncontrolled resource consumption in the Wireless Control Module (WCM) of the Indian Motorcycle Scout Bobber + Tech 2025 model year. An attacker on an adjacent network with write access to the in-vehicle network can exploit this by sending crafted messages that trigger a brute-force lockout on the immobilizer authentication algorithm. The lockout counter can be incremented by any unauthenticated message, is not bound to any session, and does not reset when the motorcycle is powered off. As a result, the attacker can cause the motorcycle to become permanently immobilized until it is serviced by a dealer.

Useful 0 Not Useful 0

Impact Analysis

The primary impact of this vulnerability is that an attacker can permanently immobilize the motorcycle, effectively causing a denial of service. The motorcycle will not start until it is serviced by a dealer, which can cause inconvenience, loss of use, and potential safety concerns for the owner.

Useful 0 Not Useful 0

Detection Guidance

This vulnerability involves an attacker sending crafted unauthenticated messages to the Wireless Control Module (WCM) on the in-vehicle network to trigger a brute-force lockout on the immobilizer authentication algorithm. Detection would involve monitoring the in-vehicle network traffic for unusual or repeated unauthenticated messages targeting the immobilizer authentication mechanism.

Since the lockout counter can be incremented by any unauthenticated message and does not reset on power cycle, commands or tools that capture and analyze CAN bus or in-vehicle network frames could be used to detect suspicious message patterns or repeated authentication attempts.

Specific commands are not provided in the available information, but network traffic capture tools (e.g., Wireshark with CAN bus support) and custom scripts to filter for repeated unauthenticated frames targeting the immobilizer could be employed.

Useful 0 Not Useful 0

Mitigation Strategies

Immediate mitigation steps include restricting write access to the in-vehicle network to trusted entities only, as the vulnerability requires write access to the network.

Implementing strong authentication and access control mechanisms to prevent unauthenticated messages from reaching the Wireless Control Module can help mitigate exploitation.

Since the lockout counter does not reset on power cycle and requires dealer service to restore functionality, avoiding exposure of the in-vehicle network to adjacent-network attackers is critical.

Monitoring for and blocking suspicious or repeated unauthenticated messages targeting the immobilizer authentication algorithm can reduce the risk of deliberate lockout.

Useful 0 Not Useful 0

Compliance Impact

The provided information does not specify any direct impact of this vulnerability on compliance with common standards and regulations such as GDPR or HIPAA.

Useful 0 Not Useful 0