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Driving Information Security, From Silicon Valley to Detroit

As software interacts with more and more of our daily lives, technology providers may be liable for more damages than they have in the recent past.

For better or worse, computer software vendors are practically devoid of any liability for vulnerabilities in the software they sell (although there is certainly a heated discussion on this topic). As far as vendors are concerned, software is “licensed” rather than sold, and users who accept those licenses are agreeing to waive certain rights, including the right to collect damages resulting from failures in the software.

To pull one particular example from the license for Microsoft SQL Server Enterprise 2012, a widely used piece of database software that underpins a significant number of enterprise applications that handle millions of dollars worth of transactions each:


When a flaw is discovered, including security flaws that are actively being exploited to breach systems, a vendor will typically issue a patch (sometimes many months later, and, hopefully without causing more problems than they fix), and that is the end of the issue: no lawsuits, no refunds, and no damages.

This liability-free model used by software vendors stands in stark contrast to almost any other product that is bought and sold. Product liability laws hold manufacturers and sellers responsible for design or manufacturing defects in their products. Rather than releasing a fix and calling it a day, these companies will find themselves on the hook financially for the consequences of their failures.

Software infiltrates everything
Government oversight from organizations like the Consumer Product Safety Commission, the National Highway Traffic Safety Administration, and the Food and Drug Administration track complaints and have the ability to force recalls or issue fines. For a recent example of these consequences we can look to General Motors’ ignition recall troubles that have so far resulted in $2.5 billion worth of recalls, fines, and compensation funds.

Most consumer products also don’t receive the frequent software updates that we are used to applying to our computers; whatever software version comes in a consumer product tends to stay in it for life. In the automotive world this has already led to some comically outdated in-dash navigation, information, and entertainment systems (especially when compared to today's rapidly evolving smartphones and tablets) but will also likely lead to some horribly vulnerable unpatched software.

[Learn more about the Internet of Things at Interop's Internet of Things Summit on Monday, September 29.]

These two worlds, both operating under very different rules, are colliding. Cutting-edge computers and software are increasingly finding their way into the types of products we buy every day, and nowhere is this more apparent than in the automotive world. The days of carbureted vehicles that could be tuned with a timing light and a screwdriver ended in the 1990s, replaced with fuel injection and electronic ignition systems that are controlled by computers actively adjusting engine parameters as we drive, based on the readings from a network of sensors scattered throughout the vehicle. These networks have grown to include more than just the engine sensors. 

In-car networking standards, such as the CAN bus standard, enable a wide array of devices within a vehicle to communicate with each other, allowing huge wiring harnesses containing hundreds of bundled wires, fuses, and switches to be replaced with commands and updates traveling over a single wire. On modern cars the brakes may not be controlled by a hydraulic line connected to the brake pedal; the throttle may not be controlled by a cable connected to the gas pedal; and the steering may not be controlled by a shaft connected to the steering wheel. Instead, the brake pedal, gas pedal, and steering wheel could all just be electronic sensors that send computerized commands over the CAN bus network to electric motors elsewhere in the vehicle that carry out those commands. Toyota’s electronic throttle control system has already made some headlines as part of a series of unintended acceleration lawsuits that resulted in 16 deaths, 243 injuries, a motorist released from jail, and a $1.2 billion fine.

This issue goes much deeper than the types of software mistakes that can cause a car to malfunction on its own. As we’ve seen with much of the software connected to the Internet, including some other systems that can have real-world (and sometimes very messy) consequences, it is the malicious hackers that can cause the most problems. Security researchers have already been looking into these sorts of possibilities and have separately demonstrated the ability to gain access to in-car networks from a remote location and affect a vehicle’s braking, steering, and acceleration (among other things) once they gain access to the in-car network.

Other attacks like location tracking and eavesdropping on a vehicle’s occupants via hands-free communication microphones are also possible, but they pale in comparison to the potentially fatal consequences of interference with the vehicle controls. Presentations at the annual Black Hat Conference and DEF CON security conferences this month have also covered topics related to automotive network and computer security, while a group in China is offering a prize of $10,000 to anyone who can gain remote access to a Tesla’s on-board operating system.

Although some of the media reports on this topic are being dismissed within the information security community as “stunt hacking” (sensationalist stories based on hacks conducted in unrealistic conditions) and manufacturers are quick to state that their car systems have safety checks built in, it is clear that the building blocks for a real-world attack are being built and assembled. The firmware manipulation techniques demonstrated at DEF CON earlier this month could be used to override or eliminate the safety checks built in by the manufacturers, and it is only a matter of time before the techniques that are being used to remotely access cars are combined with the techniques to manipulate the controls.

Next page: Many ways to attack

Christopher Camejo is an integral part of the Consulting leadership team for NTT Com Security, one of the largest security consulting organizations in the world. He directs NTT Com Security's assessment services including ethical hacking and compliance assessments. Mr. Camejo ... View Full Bio
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