{"id":116935,"date":"2024-07-04T15:05:10","date_gmt":"2024-07-04T13:05:10","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/indirector-novaya-mikroarhitekturnaya-ataka-zatragivayushhaya-cpu-intel-raptor-lake-i-alder-lake"},"modified":"2024-07-04T15:05:10","modified_gmt":"2024-07-04T13:05:10","slug":"indirector-novaya-mikroarhitekturnaya-ataka-zatragivayushhaya-cpu-intel-raptor-lake-i-alder-lake","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/indirector-novaya-mikroarhitekturnaya-ataka-zatragivayushhaya-cpu-intel-raptor-lake-i-alder-lake","title":{"rendered":"Indirector \u2014 uus mikroarhitektuuri r\u00fcnnak, mis m\u00f5jutab Intel Raptor Lake'i ja Alder Lake'i CPU-sid","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

San Diegost California \u00fclikooli teadlased esitlesid uut meetodit Intel'i protsessorite mikroarhitektuuriliste \u00fclesehituste r\u00fcndamiseks, mis on rakendatav muu hulgas Raptor Lake'i ja Alder Lake'i mikroarhitektuuriga CPU-dele. R\u00fcnnak, mille koodnimi on Indirector, v\u00f5imaldab muuta spekuleeriva k\u00e4ivitamise protsesside voogu teistes protsessides ja teistes privileegitasemetes (n\u00e4iteks tuumas v\u00f5i teises virtuaalmasinas), mis toimuvad sama CPU l\u00f5ime all koos r\u00fcndaja koodiga. Meetodi demonstreerimiseks on valmis protot\u00fc\u00fcp, mis v\u00f5imaldab m\u00e4\u00e4rata m\u00e4lu aadresside paigutuse ASLR (Address Space Layout Randomization) kaitsemehhanismi \u00fcletamiseks. Lisaks on avaldatud MIT litsentsi all t\u00f6\u00f6riistakomplekt, mis on loodud mikroarhitektuuri CPU loogika anal\u00fc\u00fcsimiseks ja tagasip\u00f6\u00f6rdumiseks. <\/p>\n

R\u00fcnnakute korraldamiseks on pakutud kahte meetodit. Esimene meetod p\u00f5hineb vahepealse haru ennustamise puhvri (IBP) sisu moonutamisel, mida kasutatakse harup\u00f6\u00f6rde ennustamiseks olukordades, kus p\u00f6\u00f6rde aadress v\u00f5i nihke v\u00e4\u00e4rtus pole veel teada ja arvutatakse enne p\u00f6\u00f6rde k\u00e4sklust. Teine meetod k\u00e4sitleb haru sihtpuvri (BTB) ennustamise puhvrit, mis sisaldab teavet hiljutiste p\u00f6\u00f6rdek\u00e4tete kohta.<\/p>\n

\"Indirector<\/center><\/p>\n

\"Indirector<\/center><\/p>\n

Avastuste tuvastamine annab r\u00fcndajale v\u00f5imaluse m\u00e4\u00e4rata IBP ja BTB puufferite salvestuste sisu, mis sisaldab kolmandate osapoolte protsessides kasutatavaid h\u00fcppeaadresse, ning v\u00f5imaldab asendada andmetabelite h\u00fcppeaadresse mingi meelevaldse aadressiga. Tulemuseks v\u00f5ib r\u00fcndaja suunata kolmanda osapoole protsessi t\u00e4itmise voolu m\u00e4llu soovitud aadressile spekulatiivsete k\u00e4skude t\u00e4itmise k\u00e4igus. Kui vale ennustus on kindlaks tehtud, edeneb spekulatiivse t\u00e4itmise tulemus tagasi, kuid aadressid ja andmed, mis loeti m\u00e4lust spekulatiivsete k\u00e4skude t\u00e4itmise ajal, j\u00e4\u00e4vad vahem\u00e4lu ja need v\u00f5ivad olla k\u00e4tte saadud, kasutades \u00fchte vahem\u00e4lu sisu m\u00e4\u00e4ramise meetoditest, mis p\u00f5hinevad proportsionaalsel juurdep\u00e4\u00e4suaegade muutuste anal\u00fc\u00fcsil puhverdatud ja mittepuhverdatud andmetele. \u00dcmberminevate h\u00fcppeaadresside t\u00e4pset m\u00e4\u00e4ratlemist saab praktikas kasutada n\u00e4iteks ASLR kaitsemehhanismi m\u00f6\u00f6da minekuks.
\n
Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0418\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u0438 \u0438\u0437 \u041a\u0430\u043b\u0438\u0444\u043e\u0440\u043d\u0438\u0439\u0441\u043a\u043e\u0433\u043e \u0443\u043d\u0438\u0432\u0435\u0440\u0441\u0438\u0442\u0435\u0442\u0430 \u0432 \u0421\u0430\u043d-\u0414\u0438\u0435\u0433\u043e \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b\u0438 \u043d\u043e\u0432\u044b\u0439 \u043c\u0435\u0442\u043e\u0434 \u0430\u0442\u0430\u043a\u0438 \u043d\u0430 \u043c\u0438\u043a\u0440\u043e\u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u043d\u044b\u0435 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u044b \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u043e\u0432 Intel, \u043f\u0440\u0438\u043c\u0435\u043d\u0438\u043c\u044b\u0439 \u0441\u0440\u0435\u0434\u0438 \u043f\u0440\u043e\u0447\u0435\u0433\u043e \u043a CPU \u043d\u0430 \u0431\u0430\u0437\u0435 \u043c\u0438\u043a\u0440\u043e\u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440 Raptor Lake \u0438 Alder Lake. \u0410\u0442\u0430\u043a\u0430, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u043e\u043b\u0443\u0447\u0438\u043b\u0430 \u043a\u043e\u0434\u043e\u0432\u043e\u0435 \u0438\u043c\u044f Indirector, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0445\u043e\u0434\u0430 \u0441\u043f\u0435\u043a\u0443\u043b\u044f\u0442\u0438\u0432\u043d\u043e\u0433\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0438\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u0439 \u0432 \u0434\u0440\u0443\u0433\u0438\u0445 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0430\u0445 \u0438 \u043d\u0430 \u0434\u0440\u0443\u0433\u0438\u0445 \u0443\u0440\u043e\u0432\u043d\u044f\u0445 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0439 (\u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0432 \u044f\u0434\u0440\u0435 \u0438\u043b\u0438 \u0434\u0440\u0443\u0433\u043e\u0439 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u043e\u0439 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":116936,"comment_status":"","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-116935","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-novosti-interneta"],"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\udd47 Indirector \u2014 uus mikroarhitektuuriline r\u00fcnnak, mis m\u00f5jutab Intel Raptor Lake'i ja Alder Lake'i CPU-sid | ProHoster","description":"California \u00dclikooli San Diegos asuvad teadlased esitlesid uut meetodit Intel CPU-de mikroarhitektuuriliste struktuuride r\u00fcnnakuks, mida saab rakendada muu hulgas Raptor Lake'i ja Alder Lake'i mikroarhitektuuri p\u00f5hinevates CPU-des. R\u00fcnnak, mis sai koodnimeks Indirector, v\u00f5imaldab muuta spekulatiivse k\u00e4skude t\u00e4itmise suunda teistes protsessides ja teistes privileegitasemetes (n\u00e4iteks tuumas v\u00f5i teises virtuaalses)","canonical_url":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/indirector-novaya-mikroarhitekturnaya-ataka-zatragivayushhaya-cpu-intel-raptor-lake-i-alder-lake","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\udd47Indirector \u2014 \u043d\u043e\u0432\u0430\u044f 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