[Various] Spectre & Meltdown: Critical vulnerabilities in modern processors - Page 186 - Overclock.net - An Overclocking Community
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[Various] Spectre & Meltdown: Critical vulnerabilities in modern processors

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post #1851 of 1857 (permalink) Old 09-11-2019, 08:14 AM
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Quote: Originally Posted by ibb27 View Post
Quote: Originally Posted by rdr09 View Post
And:
https://www.techpowerup.com/259096/n...-to-steal-data

I love the comments, especially proposed DILDO (damaging Intel leak data option) name for the 'feature'. LOL
That's the same exploit:

https://arstechnica.com/information-...sh-keystrokes/

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The researchers have named their attack NetCAT, short for Network Cache ATtack. Their research is prompting an advisory for Intel that effectively recommends turning off either DDIO or RDMA in untrusted networks. The researchers say future attacks may be able to steal other types of data, possibly even when RDMA isn't enabled. They are also advising hardware makers do a better job of securing microarchitectural enhancements before putting them into billions of real-world servers.

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post #1852 of 1857 (permalink) Old 09-17-2019, 01:49 AM
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Another issue with these vulnerabilities especially with those with private clouds is the risk of data breach from one container to another. One system could be exposed to external networks and can access data from a different container that would be for internal use only. IDK why people say that they are basically unaffected by this. If only you know how many CIOs and CTOs are scratching their heads thinking how many more vulnerabilities would be coming up. Especially with fixes with performance impact, client facing companies rely on their capacity planning for purchases which are done in advance. You can't just order a server like a laptop and get it delivered next day. With Epyc being cheaper and better performing, IDK how the long term sales projections are.

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post #1853 of 1857 (permalink) Old 09-19-2019, 11:17 AM
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Look like new Ryzen is safer than Intel
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post #1854 of 1857 (permalink) Old 09-19-2019, 12:21 PM
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Quote: Originally Posted by cfu97 View Post
Look like new Ryzen is safer than Intel

Well since half these bugs are due to the same security check flaw in the cache, yes Ryzen is safer than the current and older gen Intels. And Intel is fixing it, and they they will be the same.

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post #1855 of 1857 (permalink) Old 09-21-2019, 01:42 PM
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Quote: Originally Posted by EniGma1987 View Post
Well since half these bugs are due to the same security check flaw in the cache, yes Ryzen is safer than the current and older gen Intels. And Intel is fixing it, and they they will be the same.
I doubt Intel will fix it in hardware design in years since it would hurt its performance a lot and that would hurt sales number a lot.
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post #1856 of 1857 (permalink) Old 09-21-2019, 02:10 PM
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Quote: Originally Posted by cfu97 View Post
I doubt Intel will fix it in hardware design in years since it would hurt its performance a lot and that would hurt sales number a lot.
They already have implemented several hardware fixes. The whole point of them is to mitigate the performance loss of software workarounds. For instance, on the 9900K it brings back the theoretical 4KQ1T1 read of an Optane 900 series SSD back up to ~300 MB/s from ~200 MB/s on patched Skylake-X.

(Note these are performance differences you see in benchmarks. Such large gains are rarely mirrored in actual application performance.)
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post #1857 of 1857 (permalink) Old 09-21-2019, 02:22 PM
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Quote: Originally Posted by cx-ray View Post
Quote: Originally Posted by cfu97 View Post
I doubt Intel will fix it in hardware design in years since it would hurt its performance a lot and that would hurt sales number a lot.
They already have implemented several hardware fixes. The whole point of them is to mitigate the performance loss of software workarounds. For instance, on the 9900K it brings back the theoretical 4KQ1T1 read of an Optane 900 series SSD back up to ~300 MB/s from ~200 MB/s on patched Skylake-X.

(Note these are performance differences you see in benchmarks. Such large gains are rarely mirrored in actual application performance.)
They already implemented the hardware fixes in Ice Lake which is 18% faster than Skylake and 9% faster than Zen 2. My next notebook will have Ice Lake.

https://www.anandtech.com/show/14664...ce-lake-10nm/3

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