Security: Updates, Systematic Evaluation of Transient Execution Attacks and Defenses, New IoT Security Regulations and GPU Side-Channel Attacks
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Security updates for Thursday
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A Systematic Evaluation of Transient Execution Attacks and Defenses
[...] we present a sound and extensible systematization of transient execution attacks. Our systematization uncovers 7 (new) transient execution attacks that have been overlooked and not been investigated so far. This includes 2 new Meltdown variants: Meltdown-PK on Intel, and Meltdown-BR on Intel and AMD. It also includes 5 new Spectre mistraining strategies. We evaluate all 7 attacks in proof-of-concept implementations on 3 major processor vendors (Intel, AMD, ARM). Our systematization does not only yield a complete picture of the attack surface, but also allows a systematic evaluation of defenses. Through this systematic evaluation, we discover that we can still mount transient execution attacks that are supposed to be mitigated by rolled out patches.
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New IoT Security Regulations
Due to ever-evolving technological advances, manufacturers are connecting consumer goods -- from toys to light bulbs to major appliances -- to the Internet at breakneck speeds. This is the Internet of Things, and it's a security nightmare.
The Internet of Things fuses products with communications technology to make daily life more effortless. Think Amazon's Alexa, which not only answers questions and plays music but allows you to control your home's lights and thermostat. Or the current generation of implanted pacemakers, which can both receive commands and send information to doctors over the Internet.
But like nearly all innovation, there are risks involved. And for products born out of the Internet of Things, this means the risk of having personal information stolen or devices being overtaken and controlled remotely. For devices that affect the world in a direct physical manner -- cars, pacemakers, thermostats -- the risks include loss of life and property.
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University Researchers Publish Paper On GPU Side-Channel Attacks
University researchers out of University of California Riverside have published a paper this week detailing vulnerabilities in current GPU architectures making them vulnerable to side-channel attacks akin to Spectre and Meltdown.
With their focus on NVIDIA GPUs, UCLA Riverside researchers demonstrated attacks both for graphics and compute by exploiting the GPU's performance counters. Demonstrated attacks included a browser-based attack, extracting passwords / keystroke logging, and even the possibility of exposing a CUDA neural network algorithm.
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