作者: MirageKnight 時間: 2019-5-15 10:53 標題: intel U 又爆多一個漏泂. intel建完全關閉HT..
Yet Another Speculative Malfunction: Intel Reveals New Side-Channel Attack, Advises Disabling Hyper-Threading Below 8th, 9th Gen CPUs
https://www.techpowerup.com/2555 ... ow-8th-9th-gen-cpus
Ouch doesn't even begin to describe how much that headline hurt. As far as speculatrive execution goes, it's been well covered by now, but here's a refresher. Speculative execution essentially means that your CPU tries to think ahead of time on what data may or may not be needed, and processes it before it knows it's needed. The objective is to take advantage of concurrency in the CPU design, keeping processing units that owuld otherwise be left idle to process and deliver results on the off-chance that they are indeed required by the system: and when they are called for, the CPU saves time by not having to process them on the fly and already having them available.
The flaws have been announced by intel in coordination with Austrian university TU Graz, Vrije Universiteit Amsterdam, the University of Michigan, the University of Adelaide, KU Leuven in Belgium, Worcester Polytechnic Institute, Saarland University in Germany and security firms Cyberus, BitDefender, Qihoo360 and Oracle. While some of the aprts involved have named the four identified flaws with names such as "ZombieLoad", "Fallout", and RIDL, or "Rogue In-Flight Data Load", Intel is taking the PEGI-13 Microarchitectural Data Sampling (MDS) name.
.....
8 9 代好似無事. 舊少少個D中晒..
作者: lpc041088 時間: 2019-5-15 11:07
i9 9900K No, i7 9700K Yes!

作者: ~Mars~ 時間: 2019-5-15 11:15
Yet Another Speculative Malfunction: Intel Reveals New Side-Channel Attack, Advises Disabling Hyper- ...
MirageKnight 發表於 2019-5-15 10:53
Affected Processors
Virtually all of Intel’s chips starting with the Nehalem architecture (launched in 2008, 11 years ago) and newer, with the exception of the Whiskey Lake (ULT refresh), Whiskey Lake (desktop), as well as the Atom and Knights architectures, are affected by the MDS vulnerabilities
So no, 9900k and 8700k are definitely affected
https://www.tomshardware.com/new ... ding-spectre-attack,39333.html
作者: bam1a 時間: 2019-5-15 11:26
大佬我係咪要dum曬啲會變過時硬件嘅2C4T嘅手提電腦架
作者: kcthomlau 時間: 2019-5-15 11:31
intel發達
fans全部要upgrade再關HT
作者: MirageKnight 時間: 2019-5-15 11:33
本帖最後由 MirageKnight 於 2019-5-15 13:47 編輯
Affected Processors
Virtually all of Intel’s chips starting with the Nehalem architecture (launche ...
~Mars~ 發表於 2019-5-15 11:15
intel 話8,9代已經有HW fix. 唔應該會影響到喎...
作者: crackong 時間: 2019-5-15 11:33
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作者: a00186 時間: 2019-5-15 12:13
本帖最後由 a00186 於 2019-5-15 12:15 編輯
9代應該一樣瀨野
https://mdsattacks.com FAQ:
Am I affected?
Very likely. Our attacks affect all modern Intel CPUs in servers, desktops and laptops. This includes the latest 9th-generation processors, despite their in-silicon mitigations for Meltdown. Ironically, 9th-generation CPUs are more vulnerable to some of our attacks compared to older generation hardware.
Processors from other vendors (AMD and ARM) do not appear to be affected. Official statements from these vendors can be found in the RIDL and Fallout papers.
作者: sunyan12 時間: 2019-5-15 12:18
FBI / CIA 係INTEL 真多馬仔 !
作者: freefdhk 時間: 2019-5-15 13:23
開始覺得...
從Core I 開始 , 每代效能增長難特破, 所以每代都預先植入 一些特別的漏洞 ,
在想他們退役時就公佈該系列的漏洞 .
然後 Bugs fixed 就要減 30~80% 效能,咁你地一定要FIXED 吾係就會好危險 ,
然後BUGS FIXED 完變慢好多 ,就成功要你換 CPU 、MB、RAM 一條龍.
作者: crackong 時間: 2019-5-15 13:41
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作者: minibanana 時間: 2019-5-15 14:41
普通市民一般應用,邊會受呢d漏洞影響
商業就難講d, 利益關係大,乜都講求安全性,因為會有人攻擊
作者: TH30 時間: 2019-5-15 14:54
唔通whatsapp唔洗講安全性?
唔通payme唔洗講安全性?
除非完全唔用啦
作者: minibanana 時間: 2019-5-15 14:56
自你上網一刻已經比人監控
安全性都有分指標,whatsapp/payme你估無back door?
作者: emailaddress 時間: 2019-5-15 15:32
回覆 12# minibanana
師兄我一介普通市民睇到你個回覆我即刻安心哂喇。唔使乜都講求安全性,因為我唔會有人攻擊。
作者: waishingme 時間: 2019-5-15 16:55
原來兩年前爆出嚟嘅 Skylake CPU同Kaby Lake CPU 嘅 Hyper-Threading Bug 只係前菜
https://www.pcmarket.com.hk/2017 ... %E7%A9%A9%E5%AE%9A/
作者: dirtyman1984 時間: 2019-5-15 17:27
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作者: freefdhk 時間: 2019-5-15 17:28
APPS 有BUGS 可以軟件更新去 FIXED 就算效能影響都可以重寫架構或是不用這個APPS去避開問題.
硬件CPU 有BUGS , FIXED 左佢或關HT 都意味效能減多 30~40% .
經過多次減減減, 真係冇得淨.
擺明就係要幫舊CPU 分階段降速, 可能每年都 UPDATE 微代碼 ,
然後每年將 CPU 降效能 10%. 5年後就自然得返 50% 效能 ,
你地就會換機 .
作者: minibanana 時間: 2019-5-15 18:06
本帖最後由 minibanana 於 2019-5-15 18:16 編輯
講真,大把人都唔識電腦唔留意電腦新聞,乜都唔識一樣用得好地地
如果唔係自願性中毒,我諗無乜人會攻擊你普通市民
呢d新聞擺明針對商業同server果邊
當然無漏洞,做到越安全越好
電子野,邊有可能 0漏洞,差在有冇人爆後門同hack佢
amd未發現漏洞係因為market細,用戶遠低intel, hack黎無價值,浪費cost
所以,我唔會擔心太多
作者: kcthomlau 時間: 2019-5-15 18:08
7700k 4c8t > 9900k 8c自己關HT一樣有8t
咁算唔算fix左?
作者: EVANGELION 時間: 2019-5-15 19:32
咁商業客陪一開始已經俾人監控
作者: minibanana 時間: 2019-5-16 00:46
google已經係全球最大型監控
相信好難一樣佢既野都唔用,都唔知幾多間公司用緊佢個dns server
作者: Ksec 時間: 2019-5-16 04:00
Yes.
作者: 聖人 時間: 2019-5-16 12:52
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作者: 1q1q1q 時間: 2019-5-16 13:25
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作者: bishop168 時間: 2019-5-16 16:42
本帖最後由 bishop168 於 2019-5-16 20:54 編輯
我直覺話我知....
這個bug其實是A記發現的XD
等到合適時間便報料
時間剛剛好XD, 就在zen2要發報前不久....
7月出貨前再抄多幾個新聞, 搵幾個人告下intel, 咁就多人心理上有理由換機換a記了XD
這個世界最了解煙條的便是a記了!
(以上是陰謀論的講法, 如有雷同實屬9up, XD)
作者: 傑洛 時間: 2019-5-16 17:37
本帖最後由 傑洛 於 2020-7-3 13:02 編輯
deleted
作者: chue 時間: 2019-5-16 18:31
重點
作者: freefdhk 時間: 2019-5-19 05:53
I世代到而家係用緊同一個底
靠提升製程 Addon 指令集、放寬時脈、擠插核心數目
所以 有既新發現既Bugs 大多數全系列通殺。
終於到 AMD 上位既時候
作者: lcy513777 時間: 2019-5-19 14:43
有冇人知道9700k有冇受影響?
作者: crackong 時間: 2019-5-19 16:40
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作者: lcy513777 時間: 2019-5-19 18:55
我指效能方面
作者: crackong 時間: 2019-5-19 19:02
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作者: ryu 時間: 2019-5-19 21:10
回覆 30# lcy513777
如果係Model 158 Stepping 13有hardware mitigations就冇受影響
https://www.intel.com/content/ww ... -into-hardware.html
作者: lcy513777 時間: 2019-5-19 23:23
點知係12定13
作者: ryu 時間: 2019-5-20 00:04
回覆 35# lcy513777
9700K: Stepping 12 SRELT (P0) ----->Stepping 13 SRG15 (R0)
http://www.gdm.or.jp/crew/2019/0515/305116
作者: t19922006 時間: 2019-5-20 10:05
回覆 12# minibanana
就係有你呢啲人, 先有今多黑市信用卡
作者: madox 時間: 2019-5-20 11:51
其實個漏洞係咪普通人上網都會中招?
作者: sunyan12 時間: 2019-5-20 13:04
INTEL 是美國公司, 所以咁多後門案, INTEL 都吾使被罰錢.

