{"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\/novosti-interneta\/opublikovan-instrumentarij-dlya-deshifrovki-mikrokoda-intel","title":{"rendered":"Avaldatud on Intel'i mikrokoodi dekodeerimise t\u00f6\u00f6riistakomplekt.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Turvalisuse uurijate grupp uCode meeskonnast avaldas Intel'i mikrokoodi dekodeerimiseks l\u00e4htekoodid. Kr\u00fcpteeritud mikrokoodi v\u00e4ljav\u00f5tmiseks v\u00f5ib kasutada 2020. aastal sama teadlaste poolt v\u00e4lja t\u00f6\u00f6tatud Red Unlock tehnikat. Ettepanek dekodeerida mikrokoodi v\u00f5imaldab uurida mikrokoodi sisemist struktuuri ja x86 masinakeele teostamise meetodeid. Lisaks on teadlased taastanud mikrokoodiga uuenduste formaadi, kr\u00fcpteerimisalgoritmi ja v\u00f5tme, mida kasutati mikrokoodi kaitsmiseks (RC4). <\/p>\n

Kr\u00fcptov\u00f5tme m\u00e4\u00e4ramiseks kasutati Intel TXE haavatavust, mille kaudu \u00f5nnestus aktiveerida dokumenteerimata silumise re\u017eiim, mille teadlased nimetasid koodnimeks \"Red Unlock\". Silumise re\u017eiimis oli v\u00f5imalik otse CPU-st laadida t\u00f6\u00f6kindel mikrokood ja eraldada sealt algoritm ja v\u00f5tmed. <\/p>\n

T\u00f6\u00f6riist pakub v\u00f5imalust ainult mikrokoodi dekr\u00fcpteerimiseks, kuid ei v\u00f5imalda selle muutmist, kuna mikrokoodi terviklikkust kontrollitakse t\u00e4iendavalt digitaalsete allkirjade kaudu, mis p\u00f5hinevad RSA algoritmil. Meetod kehtib Intel'i Gemini Lake protsessorite jaoks, mis p\u00f5hinevad Goldmont Plus mikroarhitektuuril, ja Intel Apollo Lake protsessorite jaoks, 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, \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0430\u043d\u043d\u0430\u044f \u0442\u0435\u043c\u0438 \u0436\u0435 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u044f\u043c\u0438 \u0432 2020 \u0433\u043e\u0434\u0443. \u041f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043d\u0430\u044f \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0440\u0430\u0441\u0448\u0438\u0444\u0440\u043e\u0432\u043a\u0438 \u043c\u0438\u043a\u0440\u043e\u043a\u043e\u0434\u0430 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u044c \u0432\u043d\u0443\u0442\u0440\u0435\u043d\u043d\u044e\u044e \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0443 \u043c\u0438\u043a\u0440\u043e\u043a\u043e\u0434\u0430 \u0438 \u043c\u0435\u0442\u043e\u0434\u044b \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0439 \u043c\u0430\u0448\u0438\u043d\u043d\u044b\u0445 \u0438\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u0439 x86. \u0414\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u043e, \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u044f\u043c\u0438 \u0432\u043e\u0441\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d \u0444\u043e\u0440\u043c\u0430\u0442 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0439 \u0441 \u043c\u0438\u043a\u0440\u043e\u043a\u043e\u0434\u043e\u043c, \u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c \u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0438 \u043a\u043b\u044e\u0447, […]<\/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-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\udd47Avaldatud Intel'i mikrokoodi dekr\u00fcpteerimise t\u00f6\u00f6riist | ProHoster","description":"Uuringute r\u00fchm turvalisuse alal meeskonnast uCode on avaldanud algallikakoodid Intel'i mikrokoodi dekr\u00fcpteerimiseks. Kr\u00fcpteeritud mikrokoodi ekstraktsiooniks v\u00f5ib kasutada 2020. aastal samade teadlaste v\u00e4ljat\u00f6\u00f6tatud Red Unlock tehnikat. Pakutud mikrokoodi dekr\u00fcpteerimise v\u00f5imalus v\u00f5imaldab uurida mikrokoodi sisemist struktuuri ja x86 masiinijuhiste teostamise meetodeid. Lisaks on teadlased taastanud mikrokoodi uuenduste formaadi, kr\u00fcpteerimisalgoritmi ja v\u00f5tme.","canonical_url":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/opublikovan-instrumentarij-dlya-deshifrovki-mikrokoda-intel","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\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u0439 \u0434\u043b\u044f \u0434\u0435\u0448\u0438\u0444\u0440\u043e\u0432\u043a\u0438 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