figures
Blog

New Spectre Attack Enables Secrets to be Leaker Over a Network

Admin Globaldots
27.07.2018
image 1 Min read

When the Spectre and Meltdown attacks were disclosed earlier this year, the initial exploits required an attacker to be able to run code of their choosing on a victim system. This made browsers vulnerable, as suitably crafted JavaScript could be used to perform Spectre attacks. Cloud hosts were susceptible, too. But outside these situations, the impact seemed relatively limited.

That impact is now a little larger. Researchers from Graz University of Technology, including one of the original Meltdown discoverers, Daniel Gruss, have described NetSpectre: a fully remote attack based on Spectre. With NetSpectre, an attacker can remotely read the memory of a victim system without running any code on that system.

All the variants of the Spectre attacks follow a common set of principles. Each processor has an architectural behavior (the documented behavior that describes how the instructions work and that programmers depend on to write their programs) and a microarchitectural behavior (the way an actual implementation of the architecture behaves). These can diverge in subtle ways.

NetSpectre builds on these principles; it just has to work a lot harder to exploit them. With a malicious JavaScript, for example, exploitation is fairly straightforward. The JavaScript developer has relatively fine control over the instructions the processor executes and can both perform speculative execution and measure differences in cache performance quite easily.

Image Source

Read more: Ars Technica

Comments

0 comments

There’s more to see

slider item
Your Innovation Feed

eBook: Don’t Fortify, Amplify: The New Cloud Security Stack

Steven Puddephatt 25.11.21

2021’s Security leaders deal with everything from cloud-native insider threats to staying one step ahead of the unknown. While the cloud is made to amplify and speed up core business processes, the pressure to fortify cloud-borne assets from possible cyber threats painfully slows things down.  GlobalDots harnessed its 17-year cloud security experience to rethink cloud […]

Read more
slider item
Identity & Access Management (IAM)

How IT can Breeze through Onboardings without Additional Hirings

Dror Arie

Which IT Nuisance Would You Automate First? Employee onboarding is one of the heaviest, most complex operations on a company’s IT. This is especially true in fast-growing companies that may see multiple onboardings per day. And, of course, the wider a company’s software tools array, the more accounts to create and permissions to manage. In […]

Read more
slider item
Cloud Workload Protection

GlobalDots Partners with CWP Innovator Lacework

Li-Or Amir 23.11.21

In its constant endeavor to enrich its cloud security offering with the latest innovation, GlobalDots has recently introduced security unicorn Lacework to its vendor portfolio. Founded in 2015, Lacework offers a cloud security monitoring platform which brings together some of today’s top needs: Workload protection, container & K8s security, compliance monitoring. Last weekend (Nov. 18th, […]

Read more

Unlock Your Cloud Potential

Schedule a call with our experts. Discover new technology and get recommendations to improve your performance.
Contact us
figure figure figure figure figure