{"id":104673,"date":"2022-07-20T09:36:43","date_gmt":"2022-07-20T07:36:43","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/opublikovan-instrumentarij-dlya-deshifrovki-mikrokoda-intel"},"modified":"2022-07-20T09:36:43","modified_gmt":"2022-07-20T07:36:43","slug":"opublikovan-instrumentarij-dlya-deshifrovki-mikrokoda-intel","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/opublikovan-instrumentarij-dlya-deshifrovki-mikrokoda-intel","title":{"rendered":"Avaldatud Intel mikrokoode de\u0161ifreerimise t\u00f6\u00f6riist","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Uue mikrokoode de\u0161ifreerimise t\u00f6\u00f6riistade paketi avaldas uCode'i turvauuringute grupp. Kr\u00fcpteeritud mikrokoode saab v\u00e4lja t\u00f5mmata Red Unlock tehnika abil, mille arendasid samad uurijad 2020. aastal. Pakutud de\u0161ifreerimise v\u00f5imalus v\u00f5imaldab uurida mikrokoode sisemist struktuuri ja x86 masinaehete teostust. Lisaks on uurijad taastanud mikrokoode uuenduste formaadi, kr\u00fcptimise algoritmi ja v\u00f5tme, mida kasutati mikrokoode kaitsmiseks (RC4). <\/p>\n

Kasutatud oli Intel TXE haavatavust, et m\u00e4\u00e4rata rakendatav kr\u00fcptimisv\u00f5ti, mille abil suudeti aktiveerida dokumenteerimata silumise re\u017eiim, millele teadlased andsid koodnime \"Red Unlock\". Silumise re\u017eiimis \u00f5nnestus CPU-st otse laadida toimiv mikroprogrammi dump ja eraldada sealt algoritm ja v\u00f5tmed. <\/p>\n

T\u00f6\u00f6riist v\u00f5imaldab ainult mikrokoode de\u0161ifreerida, kuid ei v\u00f5imalda seda muuta, kuna mikrokoode terviklikkust kontrollitakse t\u00e4iendavalt RSA algoritmi p\u00f5hjal digitaalsete allkirjade abil. Meetod on rakendatav Intel Gemini Lake protsessoritele, mis p\u00f5hinevad Goldmont Plus mikroarhitektuuril, ja Intel Apolo Lake protsessoritele, mis p\u00f5hinevad Goldmont mikroarhitektuuril.
\n
Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0413\u0440\u0443\u043f\u043f\u0430 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0438\u0437 \u043a\u043e\u043c\u0430\u043d\u0434\u044b uCode \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0430 \u0438\u0441\u0445\u043e\u0434\u043d\u044b\u0435 \u0442\u0435\u043a\u0441\u0442\u044b \u0434\u043b\u044f \u0434\u0435\u0448\u0438\u0444\u0440\u043e\u0432\u043a\u0438 \u043c\u0438\u043a\u0440\u043e\u043a\u043e\u0434\u0430 Intel. \u0414\u043b\u044f \u0438\u0437\u0432\u043b\u0435\u0447\u0435\u043d\u0438\u044f \u0437\u0430\u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e \u043c\u0438\u043a\u0440\u043e\u043a\u043e\u0434\u0430 \u043c\u043e\u0436\u0435\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u0442\u0435\u0445\u043d\u0438\u043a\u0430 Red Unlock, 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[…]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-104673","post","type-post","status-publish","format-standard","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\udd47Avaldatud Intel mikrokoode de\u0161ifreerimise t\u00f6\u00f6riist | ProHoster","description":"Uue mikrokoode de\u0161ifreerimise t\u00f6\u00f6riistade paketi avaldas uCode'i turvauuringute 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