{"id":33706,"date":"2019-10-31T21:54:17","date_gmt":"2019-10-31T18:54:17","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novyj-klass-uyazvimostej-protsessorov-intel-riskuet-pohoronit-hyper-threading-vyshli-zaplatki-vyklyuchateli\/"},"modified":"2019-10-31T21:54:17","modified_gmt":"2019-10-31T18:54:17","slug":"novyj-klass-uyazvimostej-protsessorov-intel-riskuet-pohoronit-hyper-threading-vyshli-zaplatki-vyklyuchateli","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/novyj-klass-uyazvimostej-protsessorov-intel-riskuet-pohoronit-hyper-threading-vyshli-zaplatki-vyklyuchateli","title":{"rendered":"Uus Intel protsessorite haavatavuste klass ohustab Hyper-Threading'ut: ilmusid plaastrid-l\u00fclitid","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Tundub, et p\u00e4rast Meltdowni ja Spectre'i haavatavuste avastamist, mis toimusid \u00fcle aasta tagasi, ei saa Intel protsessorite f\u00e4nne ja kasutajaid enam miski hirmutada. Sellegipoolest suudab ettev\u00f5te meid taas \u00fcllatada. T\u00e4psemalt, \u00fcllatasid Intel protsessorite mikroarhitektuuride haavatavuste uurijad. Pakett uusest haavatavusest<\/a><\/noindex> Microarchitectural data sampling (MDS) ohjeldab multithreading-tehnoloogiat v\u00f5i Hyper-Threading'ut (\u00fcldiselt - simultaneous multithreading, SMT). On selgunud, et \u00fcks MDS-i variantidest v\u00f5ib katkestada \u00fche Hyper-Threading'i voolu isolatsiooni ja h\u00f5lbustada juurdep\u00e4\u00e4su tundlikele andmetele protsessorite puhvris ja portides (madalamal tasemel kui esimese taseme vahem\u00e4lu). Mida sellega teha? Esimene, mis p\u00e4he tuleb, on v\u00e4lja l\u00fclitada Hyper-Threading, mida tegid ka ChromeOS'i arendajad. Mis juhtub protsessorite j\u00f5udlusega? See v\u00e4heneb. Aeglustus v\u00f5ib ulatuda kuni 40%, v\u00f5i isegi rohkem.<\/p>\n

\"Uus<\/p>\n

Praegu on v\u00e4he operatsioonis\u00fcsteemide ja rakenduste arendajaid, kes j\u00e4rgivad ChromeOS j\u00e4lgedes, kuid plaastrid ja uuendused ei lasknud end oodata<\/a><\/noindex>. Apple on v\u00e4lja andnud uuendused oma kaubam\u00e4rkide arvutitele ja s\u00fclearvutitele, mis on m\u00fc\u00fcgis alates 2011. aastast. Ettev\u00f5tte s\u00f5nul on k\u00f5ik s\u00fcsteemid, mis t\u00f6\u00f6tavad macOS Mojave 10.14, juba p\u00e4ritud<\/a><\/noindex>. See takistab r\u00fcnnakute toimumist Safari ja teiste rakenduste kaudu. Enamik kasutajatest ei tohiks tundma \u00f5ppida j\u00f5udluse v\u00e4henemist. Kuid t\u00e4ielik ohu \u00e4rahoidmine h\u00f5lmab Hyper-Threading'i v\u00e4ljal\u00fclitamist, mis v\u00f5ib v\u00e4hendada j\u00f5udlust kuni 40%. Patches Sierra ja High Sierra operatsioonis\u00fcsteemidele avaldatakse samuti. iPhone'i, iPadi ja Watch'i tooted ei ole nende haavatavustega m\u00f5jutatud.<\/p>\n

Google valmistab ette plaastrid Androidi jaoks ja uuendab Chrome'i. Tuleb m\u00e4rkida, et Androidi tuleb kaitsta MDS-i haavatavuste eest ainult x86-\u00fchilduvates platvormides (sellest eraldi t\u00e4nud Intelile Atom protsessorite eest). Plaastrid Intel platvormidel olevatele nutitelefonidele ja tahvelarvutitele peavad v\u00e4lja andma seadme tootjad, samas kui Google on juba valmis saatma vajalikku paranduskoodi. Chromebookid (Chrome OS) on juba kaitstud<\/a><\/noindex> uute haavatavuste pat\u0161ide abil, ning edaspidi parandatakse ka operatsioonis\u00fcsteemi enda. Samal ajal kutsub Google kasutajaid veenduma, et seadmete tootjad on v\u00e4lja andnud vajalikud plaastrid ja\/v\u00f5i need on edastatud Microsoftile ja Apple'ile kui operatsioonis\u00fcsteemide arendajatele. Pilveteenuste ja andmekeskuste jaoks on Google juba levitanud<\/a><\/noindex> pat\u0161id serveri protsessorite kaitseks MDS eest.<\/p>\n

<\/center><\/p>\n

Brauseri Firefox arendaja ettev\u00f5te Mozilla tutvustab plaastreerimisega versioone rakendusest 21. mail. Need on Firefox versioonid 67 ja Extended Support Release versioon 60.7. Firefox Beta ja Firefox Nightly brauserid sisaldavad juba vajalikke parandusi uue haavatavuse kaitseks.<\/p>\n

\"Uus<\/p>\n

Ettev\u00f5te Microsoft on samuti v\u00e4lja andnud plaastrid operatsioonis\u00fcsteemide ja pilveteenuste jaoks. T\u00f5si, ettev\u00f5te soovitab hankida parandatud mikrokoodi seadmete tootjatelt, kuigi on samuti loonud lehe<\/a><\/noindex> iseendale plaastrite allalaadimiseks. Automaatsete v\u00e4rskenduste paketis, kasutades Windows Update'i teenust, on pat\u0161 samuti kaasatud ja hakkab levima alates neljap\u00e4evast. Microsoft Azure teenus on juba kaitstud uute haavatavuste eest. Pilveteenus Amazon AWS on samuti plaastreeritud<\/a><\/noindex>.<\/p>\n

L\u00f5puks on v\u00e4lja antud plaastrid ka sellistele Linuxi operatsioonis\u00fcsteemidele nagu Red Hat<\/a><\/noindex> ja Ubuntu<\/a><\/noindex>. J\u00e4tkub.<\/p>\n

<\/p>\n

<\/center><\/p>\n

\t\t\t\t


\n\t\t\t\t\t\t\t\t<\/center>
Allikas: 3dnews.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041a\u0430\u0437\u0430\u043b\u043e\u0441\u044c \u0431\u044b, \u0447\u0442\u043e \u043f\u043e\u0441\u043b\u0435 \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u043d\u044b\u0445 \u0431\u043e\u043b\u044c\u0448\u0435 \u0433\u043e\u0434\u0430 \u043d\u0430\u0437\u0430\u0434 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 Meltdown \u0438 Spectre \u0443\u0436\u0435 \u043d\u0438\u0447\u0442\u043e \u043d\u0435 \u0438\u0441\u043f\u0443\u0433\u0430\u0435\u0442 \u043f\u043e\u043a\u043b\u043e\u043d\u043d\u0438\u043a\u043e\u0432 \u0438 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u043e\u0432 Intel. \u0418 \u0432\u0441\u0451 \u0436\u0435 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 \u0441\u043d\u043e\u0432\u0430 \u0443\u0434\u0430\u043b\u043e\u0441\u044c \u043d\u0430\u0441 \u0443\u0434\u0438\u0432\u0438\u0442\u044c. \u0422\u043e\u0447\u043d\u0435\u0435, \u0443\u0434\u0438\u0432\u0438\u043b\u0438 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 \u0432 \u043c\u0438\u043a\u0440\u043e\u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u0435 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u043e\u0432 Intel. \u041f\u0430\u043a\u0435\u0442 \u043d\u043e\u0432\u044b\u0445 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 \u043f\u043e\u0434 \u043e\u0431\u0449\u0438\u043c \u043d\u0430\u0437\u0432\u0430\u043d\u0438\u0435\u043c microarchitectural data sampling (MDS) \u0433\u0440\u043e\u0437\u0438\u0442 \u043f\u043e\u0441\u0442\u0430\u0432\u0438\u0442\u044c \u043a\u0440\u0435\u0441\u0442 \u043d\u0430 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0438 \u043c\u043d\u043e\u0433\u043e\u043f\u043e\u0442\u043e\u0447\u043d\u044b\u0445 \u0432\u044b\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u0439 \u0438\u043b\u0438 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":25388,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-33706","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Uus klass Intel protsessorite haavatavustest ohustab Hyper-Threading'i: on ilmunud plaastrid-l\u00fclitid | ProHoster","description":"Tundus, et p\u00e4rast enam kui aasta tagasi avastatud haavatavusi Meltdown ja Spectre ei suuda miski enam Intel protsessorite f\u00e4nnide ja kasutajate hirmutada. Sellegipoolest suudeti meid taas \u00fcllatada.","canonical_url":"https:\/\/prohoster.info\/et\/blog\/news\/novyj-klass-uyazvimostej-protsessorov-intel-riskuet-pohoronit-hyper-threading-vyshli-zaplatki-vyklyuchateli","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"et_EE","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u041d\u043e\u0432\u044b\u0439 \u043a\u043b\u0430\u0441\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u043e\u0432 Intel \u0440\u0438\u0441\u043a\u0443\u0435\u0442 \u043f\u043e\u0445\u043e\u0440\u043e\u043d\u0438\u0442\u044c Hyper-Threading: \u0432\u044b\u0448\u043b\u0438 \u0437\u0430\u043f\u043b\u0430\u0442\u043a\u0438-\u0432\u044b\u043a\u043b\u044e\u0447\u0430\u0442\u0435\u043b\u0438 | ProHoster","og:description":"\u041a\u0430\u0437\u0430\u043b\u043e\u0441\u044c \u0431\u044b, \u0447\u0442\u043e \u043f\u043e\u0441\u043b\u0435 \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u043d\u044b\u0445 \u0431\u043e\u043b\u044c\u0448\u0435 \u0433\u043e\u0434\u0430 \u043d\u0430\u0437\u0430\u0434 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 Meltdown \u0438 Spectre \u0443\u0436\u0435 \u043d\u0438\u0447\u0442\u043e \u043d\u0435 \u0438\u0441\u043f\u0443\u0433\u0430\u0435\u0442 \u043f\u043e\u043a\u043b\u043e\u043d\u043d\u0438\u043a\u043e\u0432 \u0438 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u043e\u0432 Intel. \u0418 \u0432\u0441\u0451 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