{"id":35693,"date":"2019-10-31T22:05:48","date_gmt":"2019-10-31T19:05:48","guid":{"rendered":"https:\/\/prohoster.info\/blog\/uyazvimost-v-amd-sev-pozvolyayushhaya-opredelit-klyuchi-shifrovaniya\/"},"modified":"2019-10-31T22:05:48","modified_gmt":"2019-10-31T19:05:48","slug":"uyazvimost-v-amd-sev-pozvolyayushhaya-opredelit-klyuchi-shifrovaniya","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/news\/uyazvimost-v-amd-sev-pozvolyayushhaya-opredelit-klyuchi-shifrovaniya","title":{"rendered":"Vulnerabilitet n\u00eb AMD SEV, q\u00eb lejon identifikimin e \u00e7elzave t\u00eb enkriptimit","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Zhvilluesit e ekipit Google Cloud identifikuan<\/a><\/noindex> nj\u00eb vulnerabilitet (CVE-2019-9836) n\u00eb implementimin e teknologjis\u00eb AMD SEV (Virtualizimi i Enkriptuar n\u00eb Siguri), e cila lejon kompromitimin e t\u00eb dh\u00ebnave t\u00eb mbrojtura me k\u00ebt\u00eb teknologji. AMD SEV siguron enkriptim t\u00eb duksh\u00ebm t\u00eb memories s\u00eb makinave virtuale n\u00eb nivelin harduerik, ku aksesin n\u00eb t\u00eb dh\u00ebnat e dekriptuara e ka vet\u00ebm sistemi aktual i mysafir\u00ebve, nd\u00ebrsa makinat e tjera virtuale dhe hipervizori, gjat\u00eb p\u00ebrpjekjes p\u00ebr t\u00eb aksesuar k\u00ebt\u00eb memory, marrin nj\u00eb set t\u00eb dh\u00ebnash t\u00eb enkriptuara.<\/p>\n

Problemi i identifikuar lejon rikuperimin e plot\u00eb t\u00eb p\u00ebrmbajtjes s\u00eb \u00e7el\u00ebsit PDH t\u00eb mbyllur, q\u00eb p\u00ebrpunohet n\u00eb nivelin e nj\u00eb procesori t\u00eb mbrojtur t\u00eb ve\u00e7ant\u00eb PSP (AMD Security Processor), i paaksesuesh\u00ebm p\u00ebr OS-n\u00eb kryesore.
\nDuke pasur \u00e7el\u00ebsin PDH, sulmuesi mund t\u00eb rikuperoj\u00eb \u00e7el\u00ebsin e seanc\u00ebs dhe sekuenc\u00ebn sekrete, e cila \u00ebsht\u00eb vendosur gjat\u00eb krijimit t\u00eb makin\u00ebs virtuale, dhe t\u00eb fitoj\u00eb akses n\u00eb t\u00eb dh\u00ebnat e enkriptuara. <\/p>\n

Vulnerabiliteti shkaktohet nga mang\u00ebsit\u00eb n\u00eb implementimin e kurbave eliptike (ECC), t\u00eb aplikuara p\u00ebr enkriptim, t\u00eb cilat lejojn\u00eb realizimin e sulmit<\/a><\/noindex> p\u00ebr rikuperimin e parametrave t\u00eb kurb\u00ebs. Gjat\u00eb ekzekutimit t\u00eb komand\u00ebs p\u00ebr t\u00eb nisur makin\u00ebn virtuale t\u00eb mbrojtur, sulmuesi mund t\u00eb d\u00ebrgoj\u00eb parametrat e kurb\u00ebs, q\u00eb nuk p\u00ebrputhen me parametrat e rekomanduar nga NIST, \u00e7ka do t\u00eb \u00e7oj\u00eb n\u00eb p\u00ebrdorimin e vlerave t\u00eb pikave t\u00eb rendit t\u00eb vog\u00ebl n\u00eb operacionet e shumzimit me t\u00eb dh\u00ebnat e \u00e7el\u00ebsit t\u00eb mbyllur. <\/p>\n

Siguria e protokollit ECDH drejtp\u00ebrdrejt varet<\/a><\/noindex> nga nga rendi<\/a><\/noindex> i pik\u00ebs fillestare t\u00eb kurb\u00ebs, logaritmi diskret i s\u00eb cil\u00ebs p\u00ebrb\u00ebn nj\u00eb detyr\u00eb shum\u00eb t\u00eb komplikuar. N\u00eb nj\u00eb nga hapat e inicializimit t\u00eb ambientit AMD SEV, n\u00eb llogaritjet me \u00e7el\u00ebsin e mbyllur p\u00ebrdoren parametrat e marr\u00eb nga p\u00ebrdoruesi. N\u00eb thelb, ekzekutohet operacioni i shumzimit t\u00eb dy pikave, nj\u00ebra nga t\u00eb cilat i p\u00ebrket \u00e7el\u00ebsit t\u00eb mbyllur. N\u00ebse pika e dyt\u00eb i p\u00ebrket numrave t\u00eb thjesht\u00eb t\u00eb rendit t\u00eb ul\u00ebt, sulmuesi mund t\u00eb p\u00ebrcaktoj\u00eb parametrat e pik\u00ebs s\u00eb par\u00eb (bit\u00ebt e modulit t\u00eb p\u00ebrdorur n\u00eb operacionin e ngritjes n\u00eb fuqi moduluar) duke provuar t\u00eb gjitha vlerat e mundshme. P\u00ebr t\u00eb p\u00ebrcaktuar \u00e7el\u00ebsin e mbyllur, fragmentet e p\u00ebrzgjedhura t\u00eb numrave t\u00eb thjesht\u00eb mund t\u00eb mblidhen s\u00eb bashku me ndihm\u00ebn e Teorem\u00ebs Kineze t\u00eb mbetjeve<\/a><\/noindex>.<\/p>\n

Problemet preken e platformave server AMD EPYC q\u00eb p\u00ebrdorin firmware SEV deri n\u00eb versionin 0.17 build 11. Kompania AMD tashm\u00eb publikoi<\/noindex> ka l\u00ebshuar nj\u00eb p\u00ebrdit\u00ebsim firmware, i cili shton bllokimin e p\u00ebrdorimit t\u00eb pikave q\u00eb nuk p\u00ebrputhen me kurb\u00ebn NIST. Nd\u00ebrkoh\u00eb, certifikatat e gjeneruara m\u00eb par\u00eb p\u00ebr \u00e7el\u00ebsat PDH mbeten valide, \u00e7ka i lejon haker\u00ebve t\u00eb realizojn\u00eb nj\u00eb sulm p\u00ebr t\u00eb migruar makinat virtuale nga ambientet e mbrojtura nga kjo dob\u00ebsi n\u00eb ambiente q\u00eb preken nga problemi. Gjithashtu p\u00ebrmendet mund\u00ebsia e realizimit t\u00eb nj\u00eb sulmi duke rikthyer versionin e firmware n\u00eb nj\u00eb l\u00ebshim t\u00eb vjet\u00ebr t\u00eb dob\u00ebsuesh\u00ebm, por kjo mund\u00ebsi ende nuk \u00ebsht\u00eb konfirmuar.<\/p>\n

<\/a><\/noindex><\/p>\n

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

\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u0438\u0437 \u043a\u043e\u043c\u0430\u043d\u0434\u044b Google Cloud \u0432\u044b\u044f\u0432\u0438\u043b\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2019-9836) \u0432 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0438 AMD SEV (Secure Encrypted Virtualization), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0443\u044e \u0441\u043a\u043e\u043c\u043f\u0440\u043e\u043c\u0435\u0442\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0437\u0430\u0449\u0438\u0449\u0451\u043d\u043d\u044b\u0435 \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 \u0434\u0430\u043d\u043d\u043e\u0439 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0438 \u0434\u0430\u043d\u043d\u044b\u0435. AMD SEV \u043d\u0430 \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u043c \u0443\u0440\u043e\u0432\u043d\u0435 \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u0435\u0442 \u043f\u0440\u043e\u0437\u0440\u0430\u0447\u043d\u043e\u0435 \u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u043f\u0430\u043c\u044f\u0442\u0438 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u044b\u0445 \u043c\u0430\u0448\u0438\u043d, \u043f\u0440\u0438 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u0434\u043e\u0441\u0442\u0443\u043f \u043a \u0440\u0430\u0441\u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u043c \u0434\u0430\u043d\u043d\u044b\u043c \u0438\u043c\u0435\u0435\u0442 \u0442\u043e\u043b\u044c\u043a\u043e \u0442\u0435\u043a\u0443\u0449\u0430\u044f \u0433\u043e\u0441\u0442\u0435\u0432\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430, \u0430 \u043e\u0441\u0442\u0430\u043b\u044c\u043d\u044b\u0435 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u044b\u0435 \u043c\u0430\u0448\u0438\u043d\u044b \u0438 \u0433\u0438\u043f\u0435\u0440\u0432\u0438\u0437\u043e\u0440 \u043f\u0440\u0438 \u043f\u043e\u043f\u044b\u0442\u043a\u0435 \u043e\u0431\u0440\u0430\u0449\u0435\u043d\u0438\u044f […]<\/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-35693","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\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\udd47Dob\u00ebsia n\u00eb AMD SEV q\u00eb lejon identifikimin e \u00e7el\u00ebsave t\u00eb enkriptimit | ProHoster","description":"Zhvilluesit e ekipit Google Cloud zbuluan nj\u00eb dob\u00ebsi (CVE-2019-9836) n\u00eb implementimin e teknologjis\u00eb AMD SEV (Secure).","canonical_url":"https:\/\/prohoster.info\/sq\/blog\/news\/uyazvimost-v-amd-sev-pozvolyayushhaya-opredelit-klyuchi-shifrovaniya","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"sq_AL","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\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 AMD SEV, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u044c \u043a\u043b\u044e\u0447\u0438 \u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u044f | ProHoster","og:description":"\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u0438\u0437 \u043a\u043e\u043c\u0430\u043d\u0434\u044b Google Cloud \u0432\u044b\u044f\u0432\u0438\u043b\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2019-9836) \u0432 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0438 AMD SEV (Secure.","og:url":"https:\/\/prohoster.info\/sq\/blog\/news\/uyazvimost-v-amd-sev-pozvolyayushhaya-opredelit-klyuchi-shifrovaniya","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":"2019-10-31T19:05:48+00:00","article:modified_time":"2019-10-31T19:05:48+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"35693","title":null,"description":null,"keywords":null,"keyphrases":null,"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":null,"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":"2026-01-22 00:24:19","breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2021-03-01 01:57:46","updated":"2026-01-22 00:24:19","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/posts\/35693","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/comments?post=35693"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/posts\/35693\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/media?parent=35693"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/categories?post=35693"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/tags?post=35693"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}