Description
Weak authentication in the Wireless Control Module (WCM) of the Indian Motorcycle Scout Bobber + Tech 2025 model year allows an adjacent-network attacker with read access to the in-vehicle network to recover the user-set unlock PIN by passively observing a single PIN authentication exchange. The Infotainment Digital Round display computes its response using a non-cryptographic operation rather than a cryptographic challenge-response, so the PIN is mathematically derivable from one captured exchange, defeating the motorcycle's primary user-authentication control. Specific protocol details have been withheld pending vendor remediation.
Problem types
CWE-327 Use of a Broken or Risky Cryptographic Algorithm
CWE-294 Authentication Bypass by Capture-Replay
Product status
2025 (model-year)
Timeline
| 2025-03-26: | Reported to Indian Motorcycle by Rustic Security LLC (responsible disclosure) |
Credits
Scott Sheahan, Rustic Security LLC
References
www.asrg.io/...an-scout-infotainment-wcm-weak-authentication