{"id":182995,"date":"2026-08-14T10:53:40","date_gmt":"2026-08-14T08:53:40","guid":{"rendered":"https:\/\/prohoster.info\/blog\/news\/obhod-izolyaczii-pamyati-na-sistemah-s-cpu-amd-cherez-manipulyaczii-s-kontrollerom-pamyati"},"modified":"2026-08-14T10:53:42","modified_gmt":"2026-08-14T08:53:42","slug":"bypassing-memory-isolation-on-amd-cpu-systems-via-memory-controller-manipulation","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/news\/bypassing-memory-isolation-on-amd-cpu-systems-via-memory-controller-manipulation","title":{"rendered":"Anashkalim i izolimit t\u00eb memories n\u00eb sistemet me CPU AMD p\u00ebrmes manipulimit t\u00eb kontrolluesit t\u00eb memories","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"
N\u00eb konferenc\u00ebn Black Hat 2026 u demonstrua nj\u00eb metod\u00eb sulmi q\u00eb shfryt\u00ebzon regjimin swizzle t\u00eb kontrollor\u00ebve t\u00eb memories AMD p\u00ebr t\u00eb anashkaluar izolimin e memories dhe p\u00ebr t\u00eb lexuar ose shkruar t\u00eb dh\u00ebna arbitrare nga memoria, p\u00ebrfshir\u00eb zonat me mikrokodin e CPU-s\u00eb dhe memorien e ndar\u00eb p\u00ebr procesorin PSP (Platform Security Processor). Kjo metod\u00eb mund\u00ebson anashkalimin e mekanizmave t\u00eb integruar t\u00eb enkriptimit t\u00eb memories (AMD SME\/SEV), cenimin e izolimit t\u00eb makinave virtuale dhe mbishkrimin e mikrokodit t\u00eb procesorit. P\u00ebr manipulimin e kontrollorit t\u00eb memories k\u00ebrkohet ekzekutimi i kodit n\u00eb nivel kerneli, \u00e7ka ul rrezikun e teknik\u00ebs s\u00eb paraqitur t\u00eb sulmit. <\/p>\n
Regjimi \u00abswizzle\u00bb ndryshon logjik\u00ebn e adresimit t\u00eb memories operative p\u00ebr t\u00eb shmangur konfliktet q\u00eb lindin gjat\u00eb aksesit sekuencial, n\u00eb ve\u00e7anti gjat\u00eb leximit nga rreshta t\u00eb ndrysh\u00ebm brenda t\u00eb nj\u00ebjtit bank\u00eb memorieje. P\u00ebr t\u00eb eliminuar k\u00ebto konflikte, n\u00eb regjimin \u00abswizzle\u00bb kontrollori zbaton operacionin XOR mbi nj\u00eb pjes\u00eb t\u00eb biteve t\u00eb adres\u00ebs, n\u00eb m\u00ebnyr\u00eb q\u00eb blloqet e nj\u00ebpasnj\u00ebshme t\u00eb t\u00eb dh\u00ebnave t\u00eb shp\u00ebrndahen n\u00eb banka t\u00eb ndryshme memorieje. Sulmi reduktohet n\u00eb manipulimin e regjimit \u00abswizzle\u00bb n\u00eb nj\u00eb sistem aktiv p\u00ebr t\u00eb rishp\u00ebrndar\u00eb adresat fizike n\u00eb koh\u00eb reale. <\/p>\n
Prototipi i sulmit u demonstrua n\u00eb procesor\u00ebt AMD t\u00eb familjes 16h, t\u00eb p\u00ebrdorur n\u00eb konzolat PS4 dhe Xbox One, ku regjistrat e konfigurimit t\u00eb adresimit t\u00eb kontrollorit t\u00eb memories ishin t\u00eb dokumentuar dhe mungonte mekanizmi p\u00ebr bllokimin e tyre pas nisjes s\u00eb sistemit. N\u00eb procesor\u00ebt AMD t\u00eb familjes 17h dhe m\u00eb t\u00eb rinj (duke filluar nga Zen), AMD ka zbatuar nj\u00eb mekaniz\u00ebm p\u00ebr bllokimin e qasjes n\u00eb regjistrat e konfigurimit t\u00eb kontrollorit t\u00eb memories, si dhe ka shtuar mbrojtje kund\u00ebr z\u00ebvend\u00ebsimit t\u00eb kopjes s\u00eb mikrokodit q\u00eb ruhet n\u00eb memorien operative gjat\u00eb kalimit t\u00eb procesorit n\u00eb gjendjen e fjetjes (C6). \n Burimi: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"