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21 Jan 2015

Holes in Progressive Dongle could lead to car hacks

A device that a popular car insurance company sends to customers to keep track of their driving and reduce their rate may be insecure and could be used to take control of a user’s vehicles.

Progressive manufactures the device, a dongle called Snapshot that plugs into the OBD-II diagnostic port on most cars. Cory Thuen, a security researcher at Digital Bond Labs described at a security conference last week how the device could be used to hack into some vehicles’ onboard networks.

The device, already in use in two million cars across the USA, is designed to capture users’ driving habits in order to get them a better rate on car insurance. Thuen took Progressive up on an offer the company runs where they can offer anyone who wants to try out the device a free trial. After reverse engineering the device and plugging it into his Toyota Tundra, Thuen discovered the dongle not only fails to authenticate to the cellular network but also fails to encrypt its traffic. On top of that, the device’s firmware isn’t signed or validated and there’s no secure boot function.

The dongle also uses the FTP protocol, a platform now more than 30 years old and largely regarded as insecure. Perhaps more distressing, the device runs on CANbus, the same standard that processes the inner workings of the vehicle’s transmission, brake system, airbags, cruise control, power steering, etc. That means the device sends messages over CAN whenever it requests specific information about the vehicle’s network systems.

“Anything on the bus can talk to anything [else] on the bus,” Thuen told Kelly Jackson Higgins at Dark Reading last week. Thuen went on to reason that since there’s no encryption, if someone wanted to spoof a cell tower, they could be able to conduct a man-in-the-middle attack. Or one day, if Progressive’s servers ever got hacked, hackers could gain complete control over any affected cars.

Thuen presented his findings in a talk, Remote Control Automobiles, last week at S4x15, a conference held each January in Miami by Thuen’s employers, Digital Bond. While he insists he could have ventured further and weaponized his findings, Thuen told Forbes.com that he didn’t tweak his truck’s settings too much. The researcher claims that if he had hooked his laptop up directly to the Snapshot though, he could have unlocked doors, started the car and collected more engine information.

“Controlling it wasn’t the focus, finding out if it was possible was the focus,” he told. While Xirgo Technologies, the company responsible for manufacturing the devices, didn’t immediate respond to a request for comment on Monday, Progressive did issue a statement:

“The safety of our customers is paramount to us. We are confident in the performance of our Snapshot device – use in more than two million vehicles since 2008 – and routinely monitor the security of our device to help ensure customer safety.”

“However, if an individual has credible evidence of a potential vulnerability related to our device, we would prefer that the person would first disclose that potential vulnerability to us so that we could evaluate it and, if necessary, correct it before the vulnerability could be exploited. While it’s unfortunate that Mr. Thuen didn’t share his findings with us privately in advance, we would welcome his confidential and detailed input so that we can properly evaluate his claims.”

Thuen told he had tried to disclose his research to Xirgo but got no response. Researchers Chris Valasek and Charlie Miller have been sounding the alarm around car hacks for almost two years now. The two called out security flaws in both vehicles manufactured by Ford and Toyota in an elaborate paper “Adventures in Automotive Networks and Control Units.” By manipulating the cars’ electronic control units (ECU) Valasek and Miller were able to control the cars’ steering, braking and other mechanisms. Those hacks grabbed headlines but many in the security industry believe – especially as cars see rapid browser integration – that the worst is yet to come.

Tags:
USA information leaks
Source:
Threatpost
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Axarhöfði 14,
110 Reykjavik, Iceland

Iceland - 2015