Impact Analysis

This vulnerability can lead to unauthorized access to the motorcycle by allowing an attacker to recover the unlock PIN without needing to interact with the device actively.

Since the attacker only needs to passively observe one authentication exchange, they can bypass the primary user authentication control, potentially enabling theft or unauthorized use of the motorcycle.

The weakness in authentication may also expose sensitive user data or allow further attacks on the vehicle's systems if the attacker gains deeper access.

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Compliance Impact

The vulnerability involves weak authentication that allows an attacker to recover the user-set unlock PIN by passively observing a single authentication exchange. This weakness can lead to unauthorized access to the in-vehicle network and potentially expose sensitive user data.

Such unauthorized access and exposure of sensitive data could negatively impact compliance with common standards and regulations like GDPR and HIPAA, which require strong access controls and protection of personal data. Weak authentication mechanisms that allow PIN recovery undermine these requirements, increasing the risk of data breaches and non-compliance.

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Executive Summary

This vulnerability involves weak authentication in the Wireless Control Module (WCM) of the Indian Motorcycle Scout Bobber + Tech 2025 model. An attacker who is on an adjacent network and has read access to the in-vehicle network can recover the user-set unlock PIN by passively observing just one PIN authentication exchange.

The Infotainment Digital Round display uses a non-cryptographic operation to compute its response during authentication, rather than a secure cryptographic challenge-response mechanism. This design flaw allows the PIN to be mathematically derived from a single captured authentication exchange, effectively defeating the motorcycle's primary user-authentication control.

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Detection Guidance

This vulnerability involves the recovery of the user-set unlock PIN by passively observing a single PIN authentication exchange on the in-vehicle network of the Indian Motorcycle Scout Bobber + Tech 2025 model. Detection would require capturing and analyzing the PIN authentication exchanges on the in-vehicle network.

Since the specific protocol details have been withheld pending vendor remediation, no exact commands or tools can be recommended to detect this vulnerability at this time.

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Mitigation Strategies

The vulnerability is due to weak authentication in the Wireless Control Module (WCM) that allows an attacker to recover the unlock PIN by passively observing a single authentication exchange.

Immediate mitigation steps would generally include limiting physical or network access to the in-vehicle network to prevent adjacent-network attackers from capturing authentication exchanges.

Since the vendor has not yet released detailed protocol information or patches, it is recommended to monitor for vendor updates and apply any security patches or firmware updates as soon as they become available.

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