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VirtualBox 6.1.36

VirtualBox is a general-purpose full virtualizer for x86 hardware. Targeted at server, desktop and embedded use, it is the only professional-quality virtualization solution that is also Open Source. ....

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AMD Issues Updated Speculative Spectre Security Status: Predictive Store Forwarding

The mention of Spectre and Meltdown is enough to send chills down any InfoSec spine. A number of these batches of security vulnerabilities deal with speculative execution, and how a processor might leak data while executing code in a speculative manner. This week AMD has pre-empted the security space by detailing a potential security concerns regarding its new Zen 3-based Predictive Store Forwarding feature designed to improve code performance by predicting dependencies between loads and stores. AMD is clear to point out that most users will not need to take any action, as the risk for general consumer use to any breach is low, and no known code is vulnerable. ....

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Google: This Spectre proof-of-concept shows how dangerous these attacks can be

Google: This Spectre proof-of-concept shows how dangerous these attacks can be
Google issues a new warning about Spectre attacks using JavaScript to leak data from one site to another.
March 15, 2021 11:27 GMT (04:27 PDT)
| Topic: Security
Google has released a proof of concept (PoC) code to demonstrate the practicality of Spectre side-channel attacks against a browser s JavaScript engine to leak information from its memory.
Google in 2018 detailed two variants of Spectre, one of which – dubbed variant 1 (CVE-2017-5753) – concerned Javascript exploitation against browsers. Spectre targeted the process in modern CPUs called speculative execution to leak secrets such as passwords from one site to another malicious site. ....

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33 hardware and firmware vulnerabilities: A guide to the threats

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In January 2018, the entire computer industry was put on alert by two new processor vulnerabilities dubbed Meltdown and Spectre that defeated the fundamental OS security boundaries separating kernel and user space memory. The flaws stemmed from a performance feature of modern CPUs known as speculative execution and mitigating them required one of the biggest patch coordination efforts in history, involving CPU makers, device manufacturers and operating system vendors.
Meltdown and Spectre were certainly not the first vulnerabilities to result from a hardware design decision, but their widespread impact sparked the interest of the security research community into such flaws. Since then, many researchers, both from academia and the private sector, have been studying the low-level operation of CPUs and other hardware components and have been uncovering more and more issues. ....

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