{"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\/et\/blog\/news\/uyazvimosti-v-cpu-amd-pozvolyayushhie-vypolnit-kod-na-urovne-smm","title":{"rendered":"Haavatavused AMD CPU-des, mis v\u00f5imaldavad koodi k\u00e4ivitamist SMM tasemel","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>AMD teatas kuue haavatavuse k\u00f5rvaldamisest AMD EPYC ja AMD Ryzen protsessorites. Kolm k\u00f5ige ohtlikumat haavatavust (CVE-2023-31342, CVE-2023-31343, CVE-2023-31345) v\u00f5ivad potentsiaalselt lubada koodi t\u00e4itmist SMM (System Management Mode) tasemel, mille prioriteet on k\u00f5rgem kui h\u00fcperviisori ja nullringi kaitse. SMM-i kompromiteerimine v\u00f5imaldab p\u00e4\u00e4seda piiramatule juurdep\u00e4\u00e4sule kogu s\u00fcsteemi m\u00e4lule ja seda saab kasutada operatsioonis\u00fcsteemi kontrollimiseks. Haavatavused tulenevad n\u00f5uetekohase sisendite kontrolli puudumisest SMM-i t\u00f6\u00f6tlejas, mis v\u00f5imaldab privileegiga r\u00fcndajal SMRAM-i sisu \u00fclekirjutada. R\u00fcnnakumeetodi \u00fcksikasju ei ole veel avaldatud.      <\/p>\n<p>Muud haavatavused:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2023-31352 \u2014 viga AMD SEV (Secure Encrypted Virtualization) mehanismi p\u00fcsivara juures, mida kasutatakse virtualiseerimiss\u00fcsteemides kaitseks. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/et\/vps\/\"   title=\"virtuaalmasinate\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2136\">virtuaalmasinate<\/a> h\u00fcperviisori v\u00f5i host-s\u00fcsteemi administraatori sekkumise eest. Sarnaselt varasemalt veebruaris k\u00f5rvaldatud haavatavusele, v\u00f5imaldab probleem administraatoril, kellel on juurdep\u00e4\u00e4s host-ale, lugeda dekr\u00fcpteeritud m\u00e4lu sisu, milles v\u00f5ivad olla v\u00f5imalikult konfidentsiaalsed andmed k\u00fclalis-s\u00fcsteemist.\n<li class=\"l\"> CVE-2023-20582 \u2014 RMP (Reverse Map Table) kontrollide \u00fcletamise v\u00f5imalus, kui kasutatakse SEV-SNP (Secure Nested Paging) laiendust, mis on m\u00f5eldud m\u00e4lulehede sisemise tabeliga turvaliseks t\u00f6\u00f6tamiseks. Administratiivsete \u00f5igustega r\u00fcndaja v\u00f5ib luua tingimused, mis viivad PTE (Page Table Entry) jaotises vigade (fault) tekkimiseni, et m\u00f6\u00f6duda virtuaalmasinate m\u00e4lukaitsemehhanismidest.\n<li class=\"l\"> CVE-2023-20581 \u2014 IOMMU juurdep\u00e4\u00e4su juhtimise viga, mis v\u00f5imaldab privileegide omaval r\u00fcndajal RMP kontrolli \u00fcletada ja kahjustada k\u00fclg-s\u00fcsteemi m\u00e4lu terviklikkust.  <\/ul>\n<p>Haavatavused avalduvad 3. ja 4. p\u00f5lvkonna AMD EPYC serveri protsessorites, AMD EPYC 7003 ja 9004 sarjadesse kuuluval sisseehitatud CPU-l, samuti AMD Ryzen Embedded R1000, R2000, 5000, 7000, V2000 ja V3000, lauaarvuti AMD Ryzen 3000, 4000, 5000, 7000 ja 8000 seeriates ning AMD Athlon 3000 seerias.<br \/>\n<br \/>Allikas: <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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