[…] Today, a group of independent security researchers revealed that they’d found a flaw in a web portal operated by the carmaker Kia that let the researchers reassign control of the Internet-connected features of most modern Kia vehicles—dozens of models representing millions of cars on the road—from the smartphone of a car’s owner to the hackers’ own phone or computer. By exploiting that vulnerability and building their own custom app to send commands to target cars, they were able to scan virtually any Internet-connected Kia vehicle’s license plate and within seconds gain the ability to track that car’s location, unlock the car, honk its horn, or start its ignition at will.
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The web bug they used to hack Kias is, in fact, the second of its kind that they’ve reported to the Hyundai-owned company; they found a similar technique for hijacking Kias’ digital systems last year. And those bugs are just two among a slew of similar web-based vulnerabilities they’ve discovered within the last two years that have affected cars sold by Acura, Genesis, Honda, Hyundai, Infiniti, Toyota, and more.
“The more we’ve looked into this, the more it became very obvious that web security for vehicles is very poor,”
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The Kia hacking technique the group found works by exploiting a relatively simple flaw in the backend of Kia’s web portal for customers and dealers, which is used to set up and manage access to its connected car features. When the researchers sent commands directly to the API of that website—the interface that allows users to interact with its underlying data—they say they found that there was nothing preventing them from accessing the privileges of a Kia dealer, such as assigning or reassigning control of the vehicles’ features to any customer account they created. “It’s really simple. They weren’t checking if a user is a dealer,” says Rivera. “And that’s kind of a big issue.”
Kia’s web portal allowed lookups of cars based on their vehicle identification number (VIN). But the hackers found they could quickly find a car’s VIN after obtaining its license plate number using the website PlateToVin.com.
More broadly, Rivera adds, any dealer using the system seemed to have been trusted with a shocking amount of control over which vehicles’ features were linked with any particular account. “Dealers have way too much power, even over vehicles that don’t touch their lot,” Rivera says.
Source: Flaw in Kia’s web portal let researchers track, hack cars | Ars Technica
Robin Edgar
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