{"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\/ro\/blog\/news\/bypassing-memory-isolation-on-amd-cpu-systems-via-memory-controller-manipulation","title":{"rendered":"Ocolirea izol\u0103rii memoriei pe sistemele cu CPU AMD prin manipularea controlerului de memorie","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

La conferin\u021ba Black Hat 2026 a fost demonstrat\u0103 o metod\u0103 de atac care utilizeaz\u0103 modul swizzle al controlerelor de memorie AMD pentru a ocoli izola\u021bia memoriei \u0219i a citi sau scrie date din memorie \u00een mod arbitrar, inclusiv zone cu microcodul CPU \u0219i memorie rezervat\u0103 procesorului PSP (Platform Security Processor). Metoda permite ocolirea mecanismelor \u00eencorporate de criptare a memoriei (AMD SME\/SEV), \u00eenc\u0103lcarea izola\u021biei ma\u015finilor virtuale \u0219i rescrierea microcodului procesorului. Pentru manipul\u0103rile cu controlerul de memorie este necesar\u0103 executarea de cod la nivel de kernel, ceea ce reduce pericolul acestei tehnici de atac. <\/p>\n

Modul \u201eswizzle\u201d schimb\u0103 logica adres\u0103rii memoriei RAM pentru a evita conflictele ap\u0103rute \u00een urma accesului secven\u021bial, care au loc atunci c\u00e2nd se cite\u0219te din linii diferite \u00eentr-un singur r\u0103spuns de memorie. Pentru a exclude asemenea conflicte, \u00een modul \u201eswizzle\u201d, controllerul aplic\u0103 opera\u021bia XOR pe o parte din bi\u021bii adresei pentru a separa blocurile de date consecutive \u00een diferite b\u0103nci de memorie. Atacul const\u0103 \u00een manipularea modulului \u201eswizzle\u201d pe un sistem \u00een func\u021biune pentru a redistribui adresele fizice din mers. <\/p>\n

Prototipul atacului a fost demonstrat pe procesoarele AMD din familia 16h, utilizate \u00een consolele PS4 \u0219i Xbox One, \u00een care registrele de configurare ale controlerului de memorie erau documentate \u0219i nu exista un mecanism de blocare a acestora dup\u0103 bootarea sistemului. Pe procesoarele AMD din familia 17h \u0219i mai noi (\u00eencep\u00e2nd cu Zen), compania AMD a implementat un mecanism de blocare a accesului la registrele de configurare ale controlerului de memorie, precum \u0219i a ad\u0103ugat protec\u021bie \u00eempotriva \u00eenlocuirii copiei microcodului, rescris \u00een memoria RAM \u00een timpul trecerii procesorului \u00een modul de repaus (C6).
\n
Sursa: opennet.ro<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041d\u0430 \u043a\u043e\u043d\u0444\u0435\u0440\u0435\u043d\u0446\u0438\u0438 Black Hat 2026 \u043f\u0440\u043e\u0434\u0435\u043c\u043e\u043d\u0441\u0442\u0440\u0438\u0440\u043e\u0432\u0430\u043d \u043c\u0435\u0442\u043e\u0434 \u0430\u0442\u0430\u043a\u0438, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0449\u0438\u0439 swizzle-\u0440\u0435\u0436\u0438\u043c \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u043b\u0435\u0440\u043e\u0432 \u043f\u0430\u043c\u044f\u0442\u0438 AMD \u0434\u043b\u044f \u043e\u0431\u0445\u043e\u0434\u0430 \u0438\u0437\u043e\u043b\u044f\u0446\u0438\u0438 \u043f\u0430\u043c\u044f\u0442\u0438 \u0438 \u0447\u0442\u0435\u043d\u0438\u044f \u0438\u043b\u0438 \u0437\u0430\u043f\u0438\u0441\u0438 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 \u0438\u0437 \u043f\u0430\u043c\u044f\u0442\u0438, \u0432\u043a\u043b\u044e\u0447\u0430\u044f \u043e\u0431\u043b\u0430\u0441\u0442\u0438 \u0441 \u043c\u0438\u043a\u0440\u043e\u043a\u043e\u0434\u043e\u043c CPU \u0438 \u043f\u0430\u043c\u044f\u0442\u044c, \u0432\u044b\u0434\u0435\u043b\u0435\u043d\u043d\u0443\u044e PSP-\u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u0443 (Platform Security Processor). \u041c\u0435\u0442\u043e\u0434 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043e\u0431\u043e\u0439\u0442\u0438 \u0432\u0441\u0442\u0440\u043e\u0435\u043d\u043d\u044b\u0435 \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c\u044b \u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u043f\u0430\u043c\u044f\u0442\u0438 (AMD SME\/SEV), \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u044c \u0438\u0437\u043e\u043b\u044f\u0446\u0438\u044e \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u044b\u0445 \u043c\u0430\u0448\u0438\u043d \u0438 \u043f\u0435\u0440\u0435\u0437\u0430\u043f\u0438\u0441\u0430\u0442\u044c \u043c\u0438\u043a\u0440\u043e\u043a\u043e\u0434 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u0430. \u0414\u043b\u044f […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-182995","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\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\udd47Ocolirea izola\u021biei memoriei pe sistemele cu CPU AMD prin manipularea controlerului de memorie | ProHoster","description":"La conferin\u021ba Black Hat 2026 a fost demonstrat\u0103 o metod\u0103 de atac care utilizeaz\u0103 modul swizzle al controlerelor de memorie AMD pentru a ocoli izola\u021bia memoriei \u0219i a citi sau scrie date din memorie \u00een mod arbitrar, inclusiv zone cu.","canonical_url":"https:\/\/prohoster.info\/ro\/blog\/news\/bypassing-memory-isolation-on-amd-cpu-systems-via-memory-controller-manipulation","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"ro_RO","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\u0431\u0445\u043e\u0434 \u0438\u0437\u043e\u043b\u044f\u0446\u0438\u0438 \u043f\u0430\u043c\u044f\u0442\u0438 \u043d\u0430 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445 \u0441 CPU AMD \u0447\u0435\u0440\u0435\u0437 \u043c\u0430\u043d\u0438\u043f\u0443\u043b\u044f\u0446\u0438\u0438 \u0441 \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u043b\u0435\u0440\u043e\u043c \u043f\u0430\u043c\u044f\u0442\u0438 | ProHoster","og:description":"\u041d\u0430 \u043a\u043e\u043d\u0444\u0435\u0440\u0435\u043d\u0446\u0438\u0438 Black Hat 2026 \u043f\u0440\u043e\u0434\u0435\u043c\u043e\u043d\u0441\u0442\u0440\u0438\u0440\u043e\u0432\u0430\u043d \u043c\u0435\u0442\u043e\u0434 \u0430\u0442\u0430\u043a\u0438, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0449\u0438\u0439 swizzle-\u0440\u0435\u0436\u0438\u043c \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u043b\u0435\u0440\u043e\u0432 \u043f\u0430\u043c\u044f\u0442\u0438 AMD \u0434\u043b\u044f \u043e\u0431\u0445\u043e\u0434\u0430 \u0438\u0437\u043e\u043b\u044f\u0446\u0438\u0438 \u043f\u0430\u043c\u044f\u0442\u0438 \u0438 \u0447\u0442\u0435\u043d\u0438\u044f \u0438\u043b\u0438 \u0437\u0430\u043f\u0438\u0441\u0438 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 \u0438\u0437 \u043f\u0430\u043c\u044f\u0442\u0438, \u0432\u043a\u043b\u044e\u0447\u0430\u044f \u043e\u0431\u043b\u0430\u0441\u0442\u0438 \u0441.","og:url":"https:\/\/prohoster.info\/ro\/blog\/news\/bypassing-memory-isolation-on-amd-cpu-systems-via-memory-controller-manipulation","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2026-08-14T08:53:40+00:00","article:modified_time":"2026-08-14T08:53:42+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"182995","title":null,"description":null,"keywords":null,"keyphrases":{"focus":[],"additional":[]},"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":null,"breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2026-08-20 16:26:29","updated":"2026-08-20 16:26:29","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/posts\/182995","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/comments?post=182995"}],"version-history":[{"count":1,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/posts\/182995\/revisions"}],"predecessor-version":[{"id":182996,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/posts\/182995\/revisions\/182996"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/media?parent=182995"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/categories?post=182995"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/tags?post=182995"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}