{"id":121973,"date":"2025-02-17T14:22:13","date_gmt":"2025-02-17T12:22:13","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimosti-v-cpu-amd-pozvolyayushhie-vypolnit-kod-na-urovne-smm"},"modified":"2025-02-17T14:22:13","modified_gmt":"2025-02-17T12:22:13","slug":"uyazvimosti-v-cpu-amd-pozvolyayushhie-vypolnit-kod-na-urovne-smm","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pl\/blog\/news\/uyazvimosti-v-cpu-amd-pozvolyayushhie-vypolnit-kod-na-urovne-smm","title":{"rendered":"Luki w procesorach AMD umo\u017cliwiaj\u0105ce wykonanie kodu w trybie SMM","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Firma AMD og\u0142osi\u0142a usuni\u0119cie sze\u015bciu podatno\u015bci w procesorach AMD EPYC i AMD Ryzen. Trzy najbardziej niebezpieczne podatno\u015bci (CVE-2023-31342, CVE-2023-31343, CVE-2023-31345) potencjalnie pozwalaj\u0105 na wykonanie w\u0142asnego kodu na poziomie SMM (System Management Mode), kt\u00f3ry ma wy\u017cszy priorytet ni\u017c tryb hypervisor i zerowy poziom ochrony. Kompromitacja SMM umo\u017cliwia uzyskanie nieograniczonego dost\u0119pu do ca\u0142ej pami\u0119ci systemowej i mo\u017ce by\u0107 wykorzystana do kontroli systemu operacyjnego. Podatno\u015bci s\u0105 spowodowane brakiem odpowiedniej walidacji danych wej\u015bciowych w ob \ucc98\ub9ac SMM, co pozwala atakuj\u0105cemu z przywilejami na nadpisanie zawarto\u015bci SMRAM. Szczeg\u00f3\u0142y dotycz\u0105ce metody ataku nie zosta\u0142y na razie podane.      <\/p>\n<p>Pozosta\u0142e podatno\u015bci:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2023-31352 \u2014 b\u0142\u0105d w oprogramowaniu uk\u0142adowym mechanizmu AMD SEV (Secure Encrypted Virtualization), stosowanym w systemach wirtualizacji dla ochrony. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/pl\/vps\/\"   title=\"maszyn wirtualnych\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2136\">maszyn wirtualnych<\/a> przed ingerencj\u0105 ze strony hypervisora lub administratora systemu gospodarza. Podobnie jak w przypadku podatno\u015bci, kt\u00f3ra zosta\u0142a naprawiona na pocz\u0105tku lutego, problem umo\u017cliwia administratorowi maj\u0105cemu dost\u0119p do \u015brodowiska gospodarza odczytanie niezaszyfrowanej zawarto\u015bci pami\u0119ci, kt\u00f3ra mo\u017ce zawiera\u0107 poufne dane systemu go\u015bcia.\n<li class=\"l\"> CVE-2023-20582 \u2014 mo\u017cliwo\u015b\u0107 obej\u015bcia kontroli RMP (Reverse Map Table) przy u\u017cyciu rozszerzenia SEV-SNP (Secure Nested Paging), przeznaczonego do bezpiecznej pracy z zagnie\u017cd\u017conymi tabelami stron pami\u0119ci. Atakuj\u0105cy z uprawnieniami administratora mo\u017ce stworzy\u0107 warunki do wyst\u0105pienia wyj\u0105tku (fault) w PTE (Page Table Entry) w celu obej\u015bcia \u015brodk\u00f3w ochrony integralno\u015bci pami\u0119ci maszyn wirtualnych.\n<li class=\"l\"> CVE-2023-20581 \u2014 b\u0142\u0105d zarz\u0105dzania dost\u0119pem do IOMMU, umo\u017cliwiaj\u0105cy uprawnionemu atakuj\u0105cemu obej\u015bcie kontroli RMP i naruszenie integralno\u015bci pami\u0119ci systemu go\u015bcia.  <\/ul>\n<p>Podatno\u015bci wyst\u0119puj\u0105 w 3 i 4 generacji serwerowych procesor\u00f3w AMD EPYC, w wbudowanych procesorach serii AMD EPYC 7003 i 9004, w AMD Ryzen Embedded R1000, R2000, 5000, 7000, V2000 i V3000, w desktopowych seriach AMD Ryzen 3000, 4000, 5000, 7000 i 8000, a tak\u017ce w serii AMD Athlon 3000.<br \/>\n<br \/>\u0179r\u00f3d\u0142o: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=62734\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f AMD \u043e\u0431\u044a\u044f\u0432\u0438\u043b\u0430 \u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0438 \u0448\u0435\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 \u0432 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u0430\u0445 AMD EPYC \u0438 AMD Ryzen. \u0422\u0440\u0438 \u043d\u0430\u0438\u0431\u043e\u043b\u0435\u0435 \u043e\u043f\u0430\u0441\u043d\u044b\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 (CVE-2023-31342, CVE-2023-31343, CVE-2023-31345) \u043f\u043e\u0442\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0442 \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u0441\u0432\u043e\u0439 \u043a\u043e\u0434 \u043d\u0430 \u0443\u0440\u043e\u0432\u043d\u0435 SMM (System Management Mode), \u0438\u043c\u0435\u044e\u0449\u0435\u043c \u0431\u043e\u043b\u0435\u0435 \u0432\u044b\u0441\u043e\u043a\u0438\u0439 \u043f\u0440\u0438\u043e\u0440\u0438\u0442\u0435\u0442, \u0447\u0435\u043c \u0440\u0435\u0436\u0438\u043c \u0433\u0438\u043f\u0435\u0440\u0432\u0438\u0437\u043e\u0440\u0430 \u0438 \u043d\u0443\u043b\u0435\u0432\u043e\u0435 \u043a\u043e\u043b\u044c\u0446\u043e \u0437\u0430\u0449\u0438\u0442\u044b. \u041a\u043e\u043c\u043f\u0440\u043e\u043c\u0435\u0442\u0430\u0446\u0438\u044f SMM \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u043d\u0435\u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u043d\u044b\u0439 \u0434\u043e\u0441\u0442\u0443\u043f \u043a\u043e \u0432\u0441\u0435\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\u0438 \u0438 \u043c\u043e\u0436\u0435\u0442 [&hellip;]<\/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-121973","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f AMD \u043e\u0431\u044a\u044f\u0432\u0438\u043b\u0430 \u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0438 \u0448\u0435\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 \u0432 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u0430\u0445 AMD EPYC \u0438 AMD Ryzen.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri 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