{"id":30564,"date":"2019-10-31T21:36:12","date_gmt":"2019-10-31T18:36:12","guid":{"rendered":"https:\/\/prohoster.info\/blog\/positive-technologies-soobshhila-o-nahodke-novoj-potentsialnoj-zakladki-v-chipah-intel\/"},"modified":"2019-10-31T21:36:12","modified_gmt":"2019-10-31T18:36:12","slug":"positive-technologies-soobshhila-o-nahodke-novoj-potentsialnoj-zakladki-v-chipah-intel","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/positive-technologies-soobshhila-o-nahodke-novoj-potentsialnoj-zakladki-v-chipah-intel","title":{"rendered":"Positive Technologies ozn\u00e1mila n\u00e1lez nov\u00e9 potenci\u00e1ln\u00ed \"zadn\u00ed cesty\" v \u010dipech Intel","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

T\u011b\u017eko by se na\u0161el n\u011bkdo, kdo by pop\u0159el, \u017ee procesory jsou pom\u011brn\u011b slo\u017eit\u00e1 \u0159e\u0161en\u00ed, kter\u00e1 jednodu\u0161e nemohou fungovat bez sebediagnostiky a slo\u017eit\u00fdch kontroln\u00edch mechanism\u016f jak v pr\u016fb\u011bhu v\u00fdroby, tak b\u011bhem provozu. V\u00fdvoj\u00e1\u0159i mus\u00ed m\u00edt k dispozici prost\u0159edky \u201ev\u0161ehoschopnosti\u201c, aby si mohli b\u00fdt pln\u011b jisti vhodnost\u00ed v\u00fdrobku. A tyto n\u00e1stroje nikam nezmiz\u00ed. V budoucnu mohou v\u0161echny tyto diagnostick\u00e9 prost\u0159edky integrov\u00e1ny v procesorech slou\u017eit pozitivn\u00edm \u00fa\u010del\u016fm, jako jsou technologie vzd\u00e1len\u00e9 spr\u00e1vy, nap\u0159\u00edklad Intel AMT, ale mohou tak\u00e9 potenci\u00e1ln\u011b p\u0159edstavovat zadn\u00ed vr\u00e1tka pro tajn\u00e9 slu\u017eby nebo \u00fato\u010dn\u00edky, co\u017e je pro u\u017eivatel\u00e9 \u010dasto to sam\u00e9.<\/p>\n

\"Positive<\/p>\n

Jak si mo\u017en\u00e1 pamatujete, v kv\u011btnu 2016 odborn\u00edci spole\u010dnosti Positive Technologies zjistili, \u017ee modul Intel Management Engine 11, kter\u00fd implementuje technologii AMT v r\u00e1mci syst\u00e9mov\u00e9ho hubu (PCH), pro\u0161el z\u00e1sadn\u00edmi zm\u011bnami a stal se zraniteln\u00fdm v\u016f\u010di \u00fatok\u016fm \u00fato\u010dn\u00edk\u016f. Do verze IME 11 byl modul na unik\u00e1tn\u00ed architektu\u0159e a bez speci\u00e1ln\u00ed dokumentace nep\u0159edstavoval zvl\u00e1\u0161tn\u00ed nebezpe\u010d\u00ed, ale mohl otev\u0159\u00edt p\u0159\u00edstup k informac\u00edm v pam\u011bti po\u010d\u00edta\u010de. Od verze IME 11 se modul stal x86-kompatibiln\u00edm a p\u0159\u00edstupn\u00fdm k prozkoum\u00e1n\u00ed \u0161irok\u00e9mu spektru lid\u00ed (podrobnosti o zranitelnosti INTEL-SA-00086 zde a d\u00e1le v odkazech). Nav\u00edc, o rok pozd\u011bji se uk\u00e1zala souvislost mezi IME a \u0161pehovac\u00edm programem NSA. Dal\u0161\u00ed zkoum\u00e1n\u00ed IME vedlo k odhalen\u00ed dal\u0161\u00ed potenci\u00e1ln\u00ed \u201ezadn\u00ed vr\u00e1tka\u201c v \u0159adi\u010d\u00edch a procesorech Intel, o kter\u00e9 v\u010dera na konferenci Black Hat v Singapuru informovali odborn\u00edci Positive Technologies Maxim Gorja\u010dij a Mark Ermolov.<\/p>\n

V r\u00e1mci hubu PCH a v procesorech Intel byl nalezen multifunk\u010dn\u00ed logick\u00fd analyz\u00e1tor sign\u00e1l\u016f VISA (Intel Visualization of Internal Signals Architecture). P\u0159esn\u011bji \u0159e\u010deno, VISA je tak\u00e9 n\u00e1stroj Intel pro kontrolu procesor\u016f na funk\u010dnost. Dokumentace k modulu nen\u00ed ve\u0159ejn\u011b dostupn\u00e1, ale to neznamen\u00e1, \u017ee neexistuje. Studium VISA odhalilo, \u017ee p\u016fvodn\u011b na tov\u00e1rn\u011b Intel deaktivovan\u00fd analyz\u00e1tor m\u016f\u017ee b\u00fdt aktivov\u00e1n \u00fato\u010dn\u00edkem a zajist\u00ed p\u0159\u00edstup jak k informac\u00edm v pam\u011bti PC, tak k sign\u00e1ln\u00edm sekvenc\u00edm periferie. A bylo nalezeno n\u011bkolik zp\u016fsob\u016f, jak VISA aktivovat.<\/p>\n

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

\"Positive<\/p>\n

Povolit VISA a z\u00edskat nap\u0159\u00edklad p\u0159\u00edstup k webkamer\u00e1m se poda\u0159ilo na b\u011b\u017en\u00e9 z\u00e1kladn\u00ed desce. K tomu nebylo pot\u0159eba \u017e\u00e1dn\u00e9 speci\u00e1ln\u00ed vybaven\u00ed. Tento a dal\u0161\u00ed p\u0159\u00edklad odborn\u00edci spole\u010dnosti Positive Technologies demonstrovali b\u011bhem prezentace na Black Hat. P\u0159\u00edmo s NSA zat\u00edm nikdo spojen\u00ed VISA neudr\u017euje, krom\u011b samoz\u0159ejm\u011b konspira\u010dn\u00edch teoretik\u016f. Pokud v\u0161ak existuje nedokumentovan\u00e1 mo\u017enost zapnout analyz\u00e1tor sign\u00e1lu v jak\u00e9mkoli syst\u00e9mu na platform\u011b Intel, pak jej n\u011bkde ur\u010dit\u011b zapnou.<\/p>\n

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

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