Exorcising Spectre needs a new angle

Stefan Mileschin · 25th February 2019, 09:12

CPUs need to be overhauled not software fixes

Google researchers have warned that it will be challenging to avoid Spectre bugs unless CPUs are dramatically overhauled.

According to Silcon Republic the researchers, Ross McIlroy, Jaroslav Sevcik, Tobias Tebbi, Ben L Titzer and Toon Verwaest, work on Chrome’s V8 JavaScript engine and have penned a paper distributed through ArXiv.

It concludes that all processors that perform speculative execution will always remain susceptible to various side-channel attacks, despite mitigations that may be discovered in future.

It is just over a year since the Meltdown and Spectre flaws were first disclosed. Spectre is a hardware vulnerability that affects microprocessors that can potentially be exploited by malware, which can infiltrate data being processed by the CPU.

Researchers found that a malicious programme can exploit the Spectre vulnerability to steal confidential data stored in the memory of other programmes being executed.

Spectre “can enable a website to read data stored in the browser for another website, or even the browser’s memory itself”.

https://fudzilla.com/news/pc-hardwar...ds-a-new-angle

25th February 2019, 09:12	#1
Stefan Mileschin [M] Reviewer Join Date: May 2010 Location: Romania Posts: 148,738	Exorcising Spectre needs a new angle CPUs need to be overhauled not software fixes Google researchers have warned that it will be challenging to avoid Spectre bugs unless CPUs are dramatically overhauled. According to Silcon Republic the researchers, Ross McIlroy, Jaroslav Sevcik, Tobias Tebbi, Ben L Titzer and Toon Verwaest, work on Chrome’s V8 JavaScript engine and have penned a paper distributed through ArXiv. It concludes that all processors that perform speculative execution will always remain susceptible to various side-channel attacks, despite mitigations that may be discovered in future. It is just over a year since the Meltdown and Spectre flaws were first disclosed. Spectre is a hardware vulnerability that affects microprocessors that can potentially be exploited by malware, which can infiltrate data being processed by the CPU. Researchers found that a malicious programme can exploit the Spectre vulnerability to steal confidential data stored in the memory of other programmes being executed. Spectre “can enable a website to read data stored in the browser for another website, or even the browser’s memory itself”. https://fudzilla.com/news/pc-hardwar...ds-a-new-angle

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