The Lazy Genius

Security News & Brain Dumps from Xavier Ashe, a Bit9 Client Partner

Mercedes car-door locking functionality

Posted by Xavier Ashe on September 9, 2005

Last week I watched the chauffeur of a
Mercedes car. There was a parking spot left just in front of another
Mercedes. Both different types, though fairly new. As I watched by the
chauffeur got out of her car and pushed the button on the remote
control to close the doors.

The system worked. The doors of the Mercedes closed. The already parked
Mercedes responded with a happy 'click' and opened it's doors. The
chauffeur, confident the click was her car telling everything was fine,
didn't pay attention, until I pointed her to the fact that she opened
the other Mercedes.

She tried several times. When her car opened the other one closed. And
vice versa. But she didn't see it as a problem, she could close the
doors of her car and walk away.  Until I pointed out the system
probably worked the other way round as well …

How about that for a security flaw.  Found on the Risks Digest.  Can anyone back this story up?

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