{"id":160597,"date":"2026-02-11T17:11:57","date_gmt":"2026-02-11T15:11:57","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-pozvolyayushhaya-obojti-mehanizm-zashhity-intel-tdx"},"modified":"2026-02-11T17:11:57","modified_gmt":"2026-02-11T15:11:57","slug":"uyazvimost-pozvolyayushhaya-obojti-mehanizm-zashhity-intel-tdx","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/uyazvimost-pozvolyayushhaya-obojti-mehanizm-zashhity-intel-tdx","title":{"rendered":"Zranitelnost umo\u017e\u0148uj\u00edc\u00ed obej\u00edt ochrann\u00fd mechanismus Intel TDX","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Spole\u010dnosti Google a Intel zve\u0159ejnily v\u00fdsledky (PDF) spole\u010dn\u00e9 pr\u00e1ce na auditu bezpe\u010dnosti mechanismu Intel TDX 1.5 (Trusted Domain Extensions). Technologie Intel TDX implementuje \u0161ifrov\u00e1n\u00ed pam\u011bti virtu\u00e1ln\u00edch stroj\u016f, aby je chr\u00e1nila p\u0159ed z\u00e1sahy a anal\u00fdzou ze strany administr\u00e1tora hostitelsk\u00e9ho syst\u00e9mu a fyzick\u00fdmi \u00fatoky na hardware. V pr\u016fb\u011bhu auditu bylo zji\u0161t\u011bno 6 zranitelnost\u00ed a 35 chyb, kter\u00e9 na bezpe\u010dnost nemaj\u00ed vliv.     <\/p>\n<p>Probl\u00e9my se t\u00fdkaj\u00ed CPU Intel Xeon 6, stejn\u011b jako 4. a 5. generace procesor\u016f Intel Xeon Scalable. Zranitelnosti byly opraveny v\u010derej\u0161\u00edm aktualizac\u00ed mikrok\u00f3du. Na GitHubu byl zve\u0159ejn\u011bn n\u00e1stroj pro exploataci zranitelnost\u00ed v Intel TDX a prototypy exploit\u016f pro dv\u011b zranitelnosti (CVE-2025-30513, CVE-2025-32007).        <\/p>\n<p>Nejnebezpe\u010dn\u011bj\u0161\u00ed zranitelnost (CVE-2025-30513) umo\u017e\u0148uje ned\u016fv\u011bryhodn\u00e9mu administr\u00e1torovi s p\u0159\u00edstupem k hostitelsk\u00e9mu syst\u00e9mu z\u00edskat zv\u00fd\u0161en\u00ed sv\u00fdch opr\u00e1vn\u011bn\u00ed a zcela kompromitovat z\u00e1ruky bezpe\u010dnosti poskytovan\u00e9 technologi\u00ed Intel TDX. Zranitelnost je zp\u016fsobena z\u00e1vodem stavu v jednom z modul\u016f TDX, co\u017e umo\u017e\u0148uje b\u011bhem migrace virtu\u00e1ln\u00edho stroje p\u0159ev\u00e9st chr\u00e1n\u011bn\u00e9 prost\u0159ed\u00ed (TD \u2014 Trusted Domain) z podporuj\u00edc\u00edho stavu migrace do stavu, kter\u00fd umo\u017e\u0148uje p\u0159echod do ladic\u00edho re\u017eimu.     <\/p>\n<p>Probl\u00e9m je zp\u016fsoben mo\u017enost\u00ed zm\u011bnit atributy prost\u0159ed\u00ed v okam\u017eiku, kdy prob\u011bhne jejich ov\u011b\u0159en\u00ed, ale p\u0159edt\u00edm, ne\u017e jsou p\u0159evedeny do nem\u011bnn\u00e9ho stavu v p\u0159esunut\u00e9m prost\u0159ed\u00ed. Po nastaven\u00ed lad\u00edc\u00edho atributu m\u016f\u017ee administr\u00e1tor hostitelsk\u00e9ho syst\u00e9mu v re\u00e1ln\u00e9m \u010dase sledovat aktivitu chr\u00e1n\u011bn\u00e9ho hostitelsk\u00e9ho syst\u00e9mu a z\u00edskat p\u0159\u00edstup k de\u0161ifrovan\u00e9mu stavu pam\u011bti.     <\/p>\n<p>Zranitelnost je pom\u011brn\u011b snadno vy exploatovateln\u00e1, proto\u017ee administr\u00e1tor m\u016f\u017ee kdykoli zah\u00e1jit proces live migrace chr\u00e1n\u011bn\u00e9ho virtu\u00e1ln\u00edho stroje. Probl\u00e9m byl odhalen v\u00fdzkumn\u00edky z Googlu, kte\u0159\u00ed si p\u0159i studiu API pov\u0161imli nesouladu mezi t\u00edm, jak ASM (Finite State Machine) sleduje stav operac\u00ed, zpracov\u00e1v\u00e1 p\u0159eru\u0161en\u00ed operace importu a m\u011bn\u00ed se, ale nevrac\u00ed se do p\u016fvodn\u00edho stavu po selh\u00e1n\u00ed, stav chr\u00e1n\u011bn\u00e9ho prost\u0159ed\u00ed.      <\/p>\n<p>M\u00e9n\u011b nebezpe\u010dn\u00e9 zranitelnosti:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2025-32007 \u2014 celo\u010d\u00edseln\u00e9 p\u0159ete\u010den\u00ed v k\u00f3du pro anal\u00fdzu metadat, kter\u00e9 b\u011bhem live migrace zp\u016fsobuje \u00fanik 8 KB de\u0161ifrovan\u00fdch dat ze z\u00e1sobn\u00edku aktu\u00e1ln\u00edho logick\u00e9ho procesoru (LP, Logical Processor).\n<li class=\"l\"> CVE-2025-32467 \u2014 pou\u017e\u00edv\u00e1n\u00ed neinitializovan\u00fdch prom\u011bnn\u00fdch v n\u011bkter\u00fdch modulech TDX m\u016f\u017ee v\u00e9st k \u00faniku zb\u00fdvaj\u00edc\u00edch informac\u00ed.\n<li class=\"l\"> CVE-2025-27572 \u2014 akumulace citliv\u00fdch dat b\u011bhem spekulativn\u00edho prov\u00e1d\u011bn\u00ed instrukc\u00ed m\u016f\u017ee v\u00e9st k \u00faniku informac\u00ed.\n<li class=\"l\"> CVE-2025-27940 \u2014 \u010dten\u00ed z oblasti pam\u011bti mimo vyhrazen\u00fd buffer m\u016f\u017ee v\u00e9st k \u00faniku informac\u00ed.\n<li class=\"l\"> CVE-2025-31944 \u2014 z\u00e1vodn\u00ed stav, kter\u00fd m\u016f\u017ee v\u00e9st k v\u00fdpadku slu\u017eby.    <\/ul>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=64774\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Google \u0438 Intel \u0440\u0430\u0441\u043a\u0440\u044b\u043b\u0438 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u044b (PDF) \u0441\u043e\u0432\u043c\u0435\u0441\u0442\u043d\u043e\u0439 \u0440\u0430\u0431\u043e\u0442\u044b \u043f\u043e \u0430\u0443\u0434\u0438\u0442\u0443 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c\u0430 Intel TDX 1.5 (Trusted Domain Extensions). \u0422\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u044f Intel TDX \u0440\u0435\u0430\u043b\u0438\u0437\u0443\u0435\u0442 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u043f\u0430\u043c\u044f\u0442\u0438 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u044b\u0445 \u043c\u0430\u0448\u0438\u043d \u0434\u043b\u044f \u0438\u0445 \u0437\u0430\u0449\u0438\u0442\u044b \u043e\u0442 \u0432\u043c\u0435\u0448\u0430\u0442\u0435\u043b\u044c\u0441\u0442\u0432\u0430 \u0438 \u0430\u043d\u0430\u043b\u0438\u0437\u0430 \u0441\u043e \u0441\u0442\u043e\u0440\u043e\u043d\u044b \u0430\u0434\u043c\u0438\u043d\u0438\u0441\u0442\u0440\u0430\u0442\u043e\u0440\u0430 \u0445\u043e\u0441\u0442-\u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0438 \u0444\u0438\u0437\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u0430\u0442\u0430\u043a \u043d\u0430 \u043e\u0431\u043e\u0440\u0443\u0434\u043e\u0432\u0430\u043d\u0438\u0435. \u0412 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0435 \u0430\u0443\u0434\u0438\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u043e 6 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 \u0438 35 \u043d\u0435 \u0432\u043b\u0438\u044f\u044e\u0449\u0438\u0445 \u043d\u0430 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-160597","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Google \u0438 Intel \u0440\u0430\u0441\u043a\u0440\u044b\u043b\u0438 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u044b (PDF) \u0441\u043e\u0432\u043c\u0435\u0441\u0442\u043d\u043e\u0439 \u0440\u0430\u0431\u043e\u0442\u044b \u043f\u043e \u0430\u0443\u0434\u0438\u0442\u0443 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c\u0430 Intel TDX 1.5 (Trusted Domain 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