{"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\/ro\/blog\/news\/positive-technologies-soobshhila-o-nahodke-novoj-potentsialnoj-zakladki-v-chipah-intel","title":{"rendered":"Positive Technologies a raportat descoperirea unei noi poten\u021biale \u201e\u00eenregistr\u0103ri\u201d \u00een cipurile Intel","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Pu\u021bini ar contesta faptul c\u0103 procesoarele sunt solu\u021bii destul de complexe, care pur \u0219i simplu nu pot func\u021biona f\u0103r\u0103 autodiagnosticare \u0219i instrumente sofisticate de control at\u00e2t \u00een etapa de fabrica\u021bie, c\u00e2t \u0219i \u00een procesul de exploatare. Dezvoltatorii sunt \u00een mod obligatoriu obliga\u021bi s\u0103 aib\u0103 instrumente de \u201esuprem\u0103 autoritate\u201d pentru a fi complet siguri de adecvarea produsului. \u0218i aceste instrumente nu dispar nic\u0103ieri. Ulterior, toate aceste instrumente de diagnosticare din cadrul procesorului pot servi scopurilor nobile, precum tehnologiile de control de la distan\u021b\u0103, de tip Intel AMT, \u0219i pot deveni poten\u021bial un backdoor pentru agen\u021biile de informa\u021bii sau r\u0103uf\u0103c\u0103tori, ceea ce, pentru utilizator, este adesea acela\u0219i lucru.<\/p>\n

\"Positive<\/p>\n

A\u0219a cum v\u0103 pute\u021bi aminti, \u00een mai 2016, speciali\u0219tii de la Positive Technologies au descoperit c\u0103 modulul Intel Management Engine 11 pentru implementarea tehnologiei AMT \u00een cadrul hub-ului de sistem (PCH) a suferit modific\u0103ri semnificative \u0219i a devenit vulnerabil la atacurile r\u0103uf\u0103c\u0103torilor. P\u00e2n\u0103 la versiunea IME 11, modulul era pe o arhitectur\u0103 unic\u0103 \u0219i f\u0103r\u0103 documenta\u021bie special\u0103 nu prezenta un pericol semnificativ, \u00eens\u0103 putea deschide accesul la informa\u021bii din memoria PC-ului. \u00cencep\u00e2nd cu versiunea IME 11, modulul a devenit compatibil x86 \u0219i accesibil pentru studiere \u00een r\u00e2ndul maselor largi (mai multe despre vulnerabilitatea INTEL-SA-00086 aici \u0219i \u00een continuare prin linkuri). Mai mult, dup\u0103 un an, a fost identificat\u0103 o leg\u0103tur\u0103 \u00eentre IME \u0219i programul de supraveghere al NSA din SUA. Studiul suplimentar al IME a condus la descoperirea unei alte \u201e\u00eenregistr\u0103ri\u201d poten\u021biale \u00een controlerele \u0219i procesoarele Intel, despre care ieri au vorbit la conferin\u021ba Black Hat de la Singapore speciali\u0219tii Positive Technologies Maxim Goryachy \u0219i Mark Ermolov.<\/p>\n

\u00cen cadrul hub-ului PCH \u0219i al procesoarelor Intel a fost descoperit un analizator logic multifunc\u021bional de semnale VISA (Intel Visualization of Internal Signals Architecture). Mai exact, VISA este tot un instrument Intel pentru verificarea func\u021bion\u0103rii procesoarelor. Documenta\u021bia pentru acest bloc nu este disponibil\u0103 publicului, dar acest lucru nu \u00eenseamn\u0103 c\u0103 nu exist\u0103. Studiile asupra VISA au ar\u0103tat c\u0103 analizatorul, ini\u021bial dezactivat la fabric\u0103 de Intel, poate fi activat de un atacator, oferind acces at\u00e2t la informa\u021biile din memoria PC-ului, c\u00e2t \u0219i la secven\u021bele de semnal ale perifericelor. \u00cen plus, au fost identificate mai multe metode de activare a VISA.<\/p>\n

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

\"Positive<\/p>\n

Activarea VISA a permis, de exemplu, accesul la camerele web, utiliz\u00e2nd o plac\u0103 de baz\u0103 obi\u0219nuit\u0103. Nu a fost nevoie de echipamente speciale pentru aceasta. Acest exemplu \u0219i alte cazuri au fost prezentate de exper\u021bii de la Positive Technologies \u00een timpul unei prelegeri la Black Hat. P\u00e2n\u0103 acum, nimeni nu leag\u0103 direct VISA de NSA, cu excep\u021bia, desigur, a teoriilor conspira\u021biei. Totu\u0219i, dac\u0103 exist\u0103 o posibilitate nedocumentat\u0103 de a activa un analizator de semnal \u00een orice sistem bazat pe Intel, cu siguran\u021b\u0103 va fi activat\u0103 undeva.<\/p>\n

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

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