{"id":33686,"date":"2019-10-31T21:54:10","date_gmt":"2019-10-31T18:54:10","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novaya-uyazvimost-zatragivaet-prakticheski-kazhdyj-chip-intel-proizvedyonnyj-s-2011-goda\/"},"modified":"2019-10-31T21:54:10","modified_gmt":"2019-10-31T18:54:10","slug":"novaya-uyazvimost-zatragivaet-prakticheski-kazhdyj-chip-intel-proizvedyonnyj-s-2011-goda","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/news\/novaya-uyazvimost-zatragivaet-prakticheski-kazhdyj-chip-intel-proizvedyonnyj-s-2011-goda","title":{"rendered":"Nov\u00e1 zranite\u013enos\u0165 sa t\u00fdka takmer ka\u017ed\u00e9ho \u010dipu Intel vyroben\u00e9ho od roku 2011","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Odborn\u00edci na informa\u010dn\u00fa bezpe\u010dnos\u0165 objavili nov\u00fa zranite\u013enos\u0165 v \u010dipoch Intel, ktor\u00fa je mo\u017en\u00e9 vyu\u017ei\u0165 na kr\u00e1de\u017e d\u00f4vern\u00fdch inform\u00e1ci\u00ed priamo z procesora. V\u00fdskumn\u00edci ju nazvali \u201eZombieLoad\u201c. ZombieLoad \u2013 to je \u00fatok ved\u013eaj\u0161ieho typu, zameran\u00fd na \u010dipy Intel, ktor\u00fd umo\u017e\u0148uje hackerom efekt\u00edvne vyu\u017ei\u0165 nedostatok v ich architekt\u00fare na z\u00edskanie n\u00e1hodn\u00fdch \u00fadajov, av\u0161ak neumo\u017e\u0148uje nasadi\u0165 a vykona\u0165 n\u00e1hodn\u00fd \u0161kodliv\u00fd k\u00f3d, a tak ju nemo\u017eno pou\u017ei\u0165 ako jedin\u00fd n\u00e1stroj na prenikanie a hackovanie vzdialen\u00fdch po\u010d\u00edta\u010dov.<\/p>\n<p><img decoding=\"async\" alt=\"Nov\u00e1 zranite\u013enos\u0165 sa t\u00fdka takmer ka\u017ed\u00e9ho \u010dipu Intel vyroben\u00e9ho od roku 2011\" src=\"\/wp-content\/uploads\/2019\/05\/1da259be37db8107eeac1fde735cd09d.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Pod\u013ea spolo\u010dnosti Intel sa ZombieLoad sklad\u00e1 zo \u0161tyroch ch\u00fdb v mikrok\u00f3de ich \u010dipov, o ktor\u00fdch im v\u00fdskumn\u00edci informovali len pred mesiacom. Zranite\u013enostiam podlieha takmer ka\u017ed\u00fd po\u010d\u00edta\u010d s \u010dipmi Intel vyroben\u00fdmi od roku 2011. \u010cipy ARM a AMD nie s\u00fa touto zranite\u013enos\u0165ou ohrozen\u00e9.<\/p>\n<p>ZombieLoad pripom\u00edna zn\u00e1me Meltdown a Spectre, ktor\u00e9 vyu\u017e\u00edvali chybu v syst\u00e9me \u0161pekulat\u00edvneho (predbe\u017en\u00e9ho) vykon\u00e1vania pr\u00edkazov. \u0160pekulat\u00edvne vykon\u00e1vanie pom\u00e1ha procesorom do ur\u010ditej miery predpoveda\u0165, \u010do m\u00f4\u017ee aplik\u00e1cia alebo opera\u010dn\u00fd syst\u00e9m potrebova\u0165 v najbli\u017e\u0161ej bud\u00facnosti, \u010d\u00edm sa aplik\u00e1cia st\u00e1va r\u00fdchlej\u0161ou a efekt\u00edvnej\u0161ou. Procesor vr\u00e1ti v\u00fdsledky svojich progn\u00f3z, ak sa uk\u00e1\u017eu ako spr\u00e1vne, alebo zru\u0161\u00ed v\u00fdsledky vykon\u00e1vania, ak progn\u00f3za bola nespr\u00e1vna. Ako Meltdown, tak aj Spectre zneu\u017e\u00edvaj\u00fa t\u00fato funkciu na z\u00edskanie priamych pr\u00edstupov k inform\u00e1ci\u00e1m, s ktor\u00fdmi pracuje procesor.<\/p>\n<p><center><\/center><\/p>\n<p>ZombieLoad sa preklad\u00e1 ako \u201ena\u010d\u00edtanie zombi\u00ed\u201c, \u010do \u010diasto\u010dne vysvet\u013euje mechanizmus zranite\u013enosti. Po\u010das \u00fatoku je do procesora dod\u00e1van\u00e9 tak\u00e9 mno\u017estvo \u00fadajov, ktor\u00e9 nie je schopn\u00fd spr\u00e1vne spracova\u0165, \u010do n\u00fati procesor po\u017eiada\u0165 mikrok\u00f3d o pomoc, aby zabr\u00e1nil zlyhaniu. Zvy\u010dajne aplik\u00e1cie m\u00f4\u017eu vidie\u0165 len svoje vlastn\u00e9 \u00fadaje, ale chyba sp\u00f4soben\u00e1 pre\u0165a\u017een\u00edm procesora umo\u017e\u0148uje ob\u00eds\u0165 toto obmedzenie. V\u00fdskumn\u00edci uviedli, \u017ee ZombieLoad dok\u00e1\u017ee z\u00edska\u0165 ak\u00e9ko\u013evek \u00fadaje, ktor\u00e9 vyu\u017e\u00edvaj\u00fa jadra procesora. Intel informuje, \u017ee oprava pre mikrok\u00f3d pom\u00f4\u017ee vy\u010disti\u0165 vyrovn\u00e1vacie pam\u00e4te procesora pri pre\u0165a\u017een\u00ed, \u010d\u00edm sa zabr\u00e1ni \u010d\u00edtaniu \u00fadajov, ktor\u00e9 nie s\u00fa ur\u010den\u00e9 pre aplik\u00e1cie.<\/p>\n<p>Vo video demon\u0161tr\u00e1cii zranite\u013enosti v\u00fdskumn\u00edci uk\u00e1zali, \u017ee sa d\u00e1 vyu\u017ei\u0165 na zistenie, ktor\u00e9 webov\u00e9 str\u00e1nky nav\u0161tevuje \u010dlovek v re\u00e1lnom \u010dase, ale rovnako jednoducho sa d\u00e1 pou\u017ei\u0165 na z\u00edskanie napr\u00edklad hesiel alebo pr\u00edstupov\u00fdch tokenov, ktor\u00e9 pou\u017e\u00edvatelia pou\u017e\u00edvaj\u00fa pre platobn\u00e9 syst\u00e9my.<\/p>\n<\/p>\n<p><video controls=\"controls\" preload=\"metadata\" width=\"750\"><source src=\"https:\/\/techcrunch.com\/wp-content\/uploads\/2019\/05\/demo_720.mp4?_=1\" type=\"video\/mp4\" \/><\/video><\/p>\n<p>Podobne ako Meltdown a Spectre, ZombieLoad s\u00fa zranite\u013en\u00e9 nielen na PC a prenosn\u00fdch po\u010d\u00edta\u010doch, ale aj v cloude. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/sk\/server\/\"   title=\"servery\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"1829\">servery<\/a>Zranite\u013enos\u0165 sa d\u00e1 vyu\u017ei\u0165 na virtu\u00e1lnych strojoch, ktor\u00e9 by mali by\u0165 izolovan\u00e9 od in\u00fdch virtu\u00e1lnych syst\u00e9mov a ich hostite\u013esk\u00fdch zariaden\u00ed, \u010do potenci\u00e1lne obch\u00e1dza t\u00fato izol\u00e1ciu. Daniel Gruss, jeden z v\u00fdskumn\u00edkov, ktor\u00ed zranite\u013enos\u0165 objavili, tvrd\u00ed, \u017ee m\u00f4\u017ee \u010d\u00edta\u0165 d\u00e1ta zo serverov\u00fdch procesorov rovnako ako na osobn\u00fdch po\u010d\u00edta\u010doch. To predstavuje potenci\u00e1lne v\u00e1\u017eny probl\u00e9m v cloudov\u00fdch prostrediach, kde virtu\u00e1lne stroje r\u00f4znych klientov be\u017eia na jednom hardv\u00e9ri servera. Hoci o \u00fatokoch vyu\u017e\u00edvaj\u00facich ZombieLoad sa nikdy verejne nehl\u00e1silo, v\u00fdskumn\u00edci nem\u00f4\u017eu vyl\u00fa\u010di\u0165, \u017ee k nim mohlo d\u00f4js\u0165, preto\u017ee kr\u00e1de\u017e d\u00e1t nezanech\u00e1va v\u017edy \u017eiadne stopy.<\/p>\n<p>\u010co to znamen\u00e1 pre be\u017en\u00e9ho pou\u017e\u00edvate\u013ea? Nie je potrebn\u00e9 panik\u00e1ri\u0165. To rozhodne nie je exploit alebo zranite\u013enos\u0165 nulov\u00e9ho d\u0148a, pri ktorej by \u00fato\u010dn\u00edk mohol prevzia\u0165 v\u00e1\u0161 po\u010d\u00edta\u010d v okamihu. Gruss vysvet\u013euje, \u017ee aplikova\u0165 ZombieLoad je \u201e\u013eah\u0161ie ako Spectre\u201c, ale \u201e\u0165a\u017e\u0161ie ako Meltdown\u201c \u2013 a to oboje si vy\u017eaduje ur\u010dit\u00fa sadu zru\u010dnost\u00ed a \u00fasilia na vyu\u017eitie v \u00fatoku. V skuto\u010dnosti, na vykonanie \u00fatoku pomocou ZombieLoad mus\u00edte nejako na\u010d\u00edta\u0165 infikovan\u00fa aplik\u00e1ciu a sami ju spusti\u0165, vtedy zranite\u013enos\u0165 pom\u00f4\u017ee \u00fato\u010dn\u00edkovi stiahnu\u0165 v\u0161etky va\u0161e \u00fadaje. Napriek tomu existuj\u00fa ove\u013ea jednoduch\u0161ie sp\u00f4soby, ako hackn\u00fa\u0165 po\u010d\u00edta\u010d a ukradn\u00fa\u0165 ich.<\/p>\n<p>Spolo\u010dnos\u0165 Intel u\u017e vydala mikrok\u00f3d na opravu zranite\u013en\u00fdch procesorov, vr\u00e1tane \u010dipov Intel Xeon, Intel Broadwell, Sandy Bridge, Skylake a Haswell, Intel Kaby Lake, Coffee Lake, Whiskey Lake a Cascade Lake, ako aj v\u0161etk\u00fdch procesorov Atom a Knights. \u010eal\u0161ie ve\u013ek\u00e9 spolo\u010dnosti tie\u017e vydali opravy zranite\u013enost\u00ed z ich strany. Apple, Microsoft a Google pre svoj prehliada\u010d u\u017e takisto vydali pr\u00edslu\u0161n\u00e9 z\u00e1platy.<\/p>\n<p>V rozhovore pre port\u00e1l TechCrunch Intel uviedla, \u017ee aktualiz\u00e1cie pre mikrok\u00f3d \u010dipov, ako aj predch\u00e1dzaj\u00face z\u00e1platy, bud\u00fa ma\u0165 vplyv na v\u00fdkon procesorov. Z\u00e1stupca Intelu povedal, \u017ee v\u00e4\u010d\u0161ina opraven\u00fdch spotrebite\u013esk\u00fdch zariaden\u00ed m\u00f4\u017ee v najhor\u0161om pr\u00edpade strati\u0165 3% v\u00fdkonu, pri\u010dom pre d\u00e1tov\u00e9 centr\u00e1 to m\u00f4\u017ee dosiahnu\u0165 a\u017e 9% straty. Ale pod\u013ea Intelu to pravdepodobne nebude v mnoh\u00fdch sc\u00e9n\u00e1roch c\u00edti\u0165.<\/p>\n<p>Napriek tomu s\u00fa s Intelom \u00faplne v rozpore in\u017einieri Apple, ktor\u00ed na <noindex><a rel=\"nofollow\" href=\"https:\/\/support.apple.com\/en-us\/HT210108\">\u0161peci\u00e1lnej str\u00e1nke<\/a><\/noindex> O met\u00f3de celkovej ochrany pred &laquo;Microarchitectural Data Sampling&raquo; (ofici\u00e1lny n\u00e1zov ZombieLoad) sa tvrd\u00ed, \u017ee na definit\u00edvne vyrie\u0161enie zranite\u013enosti je potrebn\u00e9 \u00faplne vypn\u00fa\u0165 technol\u00f3giu Intel Hyper-Threading v procesoroch, \u010do pod\u013ea testov odborn\u00edkov z Apple m\u00f4\u017ee zn\u00ed\u017ei\u0165 v\u00fdkon pou\u017e\u00edvate\u013esk\u00fdch zariaden\u00ed v niektor\u00fdch \u00faloh\u00e1ch a\u017e o 40%.<\/p>\n<p>Ani Intel, ani Daniel a jeho t\u00edm nezverejnili k\u00f3d, ktor\u00fd implementuje zranite\u013enos\u0165, preto neexistuje priamy a bezprostredn\u00fd hrozba pre be\u017en\u00e9ho pou\u017e\u00edvate\u013ea. A r\u00fdchlo vydan\u00e9 z\u00e1platy t\u00fato hrozbu \u00faplne eliminuj\u00fa, av\u0161ak pri\u010dom ka\u017ed\u00e9 tak\u00e9to opravy sp\u00f4sobuj\u00fa pou\u017e\u00edvate\u013eom ur\u010dit\u00e9 straty v\u00fdkonu, vyvst\u00e1vaj\u00fa k Intelu ur\u010dit\u00e9 ot\u00e1zky.<\/p>\n<p><center><\/p>\n<p><\/center><\/p>\n<p>\t\t\t\t<center><br \/>\n\t\t\t\t\t\t\t\t<\/center><br \/>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"http:\/\/www.3dnews.ru\/987453\">3dnews.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043f\u0435\u0446\u0438\u0430\u043b\u0438\u0441\u0442\u044b \u043f\u043e \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0438\u043b\u0438 \u043d\u043e\u0432\u0443\u044e \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 \u0447\u0438\u043f\u0430\u0445 Intel, \u043a\u043e\u0442\u043e\u0440\u0443\u044e \u043c\u043e\u0436\u043d\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u0434\u043b\u044f \u043a\u0440\u0430\u0436\u0438 \u043a\u043e\u043d\u0444\u0438\u0434\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e\u0439 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438 \u043d\u0435\u043f\u043e\u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0435\u043d\u043d\u043e \u0438\u0437 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u0430. \u0418\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u0438 \u043d\u0430\u0437\u0432\u0430\u043b\u0438 \u0435\u0451 &laquo;ZombieLoad&raquo;. ZombieLoad &mdash; \u044d\u0442\u043e \u0430\u0442\u0430\u043a\u0430 \u043f\u043e\u0431\u043e\u0447\u043d\u043e\u0433\u043e \u0442\u0438\u043f\u0430, \u043d\u0430\u0446\u0435\u043b\u0435\u043d\u043d\u0430\u044f \u043d\u0430 \u0447\u0438\u043f\u044b Intel, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0445\u0430\u043a\u0435\u0440\u0430\u043c \u044d\u0444\u0444\u0435\u043a\u0442\u0438\u0432\u043d\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u043d\u0435\u0434\u043e\u0441\u0442\u0430\u0442\u043e\u043a \u0432 \u0438\u0445 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u0435 \u0434\u043b\u044f \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u0438\u044f \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445, \u043d\u043e \u043f\u0440\u0438 \u044d\u0442\u043e\u043c \u043e\u043d\u0430 \u043d\u0435 \u0434\u0430\u0451\u0442 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0438 \u0432\u043d\u0435\u0434\u0440\u0438\u0442\u044c \u0438 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":25371,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-33686","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0421\u043f\u0435\u0446\u0438\u0430\u043b\u0438\u0441\u0442\u044b \u043f\u043e \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0438\u043b\u0438 \u043d\u043e\u0432\u0443\u044e 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