{"id":107141,"date":"2023-03-07T12:48:16","date_gmt":"2023-03-07T10:48:16","guid":{"rendered":"https:\/\/prohoster.info\/?p=107141"},"modified":"2023-03-10T11:57:09","modified_gmt":"2023-03-10T09:57:09","slug":"uyazvimosti-v-etalonnoj-realizaczii-tpm-2-0-pozvolyayushhie-poluchit-dostup-k-dannym-v-kriptochipe","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pl\/blog\/news\/uyazvimosti-v-etalonnoj-realizaczii-tpm-2-0-pozvolyayushhie-poluchit-dostup-k-dannym-v-kriptochipe","title":{"rendered":"Luki w referencyjnej realizacji TPM 2.0, pozwalaj\u0105ce na dost\u0119p do danych w chipie kryptograficznym.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

W kodzie referencyjnej realizacji specyfikacji TPM 2.0 (Trusted Platform Module) zidentyfikowano luki (CVE-2023-1017, CVE-2023-1018), prowadz\u0105ce do zapisu lub odczytu danych poza przydzielonym buforem. Atak na realizacje procesor\u00f3w kryptograficznych, kt\u00f3re wykorzystuj\u0105 podatny kod, mo\u017ce prowadzi\u0107 do ekstrakcji lub nadpisania informacji przechowywanej na chipie, takiej jak klucze kryptograficzne. Mo\u017cliwo\u015b\u0107 nadpisania danych w firmware TPM mo\u017ce by\u0107 wykorzystana przez atakuj\u0105cego do uruchomienia swojego kodu w kontek\u015bcie TPM, co mo\u017ce by\u0107 u\u017cyte do implementacji tylnych drzwi dzia\u0142aj\u0105cych po stronie TPM, niewykrywalnych z poziomu systemu operacyjnego. <\/p>\n

Luki te s\u0105 spowodowane niew\u0142a\u015bciw\u0105 weryfikacj\u0105 rozmiaru parametr\u00f3w funkcji CryptParameterDecryption(), co pozwala na zapis lub odczyt dw\u00f3ch bajt\u00f3w poza buforem przekazywanym do funkcji ExecuteCommand() i zawieraj\u0105cym polecenie TPM 2.0. W zale\u017cno\u015bci od realizacji firmware, nadpisywane dwa bajty mog\u0105 uszkodzi\u0107 zar\u00f3wno nieu\u017cywan\u0105 pami\u0119\u0107, jak i dane lub wska\u017aniki na stosie. <\/p>\n

Eksploatacja luki odbywa si\u0119 poprzez przesy\u0142anie do modu\u0142u TPM specjalnie sformu\u0142owanych polece\u0144 (atakuj\u0105cy musi mie\u0107 dost\u0119p do interfejsu TPM). Problemy zosta\u0142y rozwi\u0105zane w wydaniu zaktualizowanej specyfikacji TPM 2.0 (1.59 Errata 1.4, 1.38 Errata 1.13, 1.16 Errata 1.6) z stycznia. <\/p>\n

Luka dotyczy tak\u017ce otwartej biblioteki libtpms, stosowanej do programowej emulacji modu\u0142\u00f3w TPM i integrowania wsparcia TPM w hipernadzorcach. Luka zosta\u0142a naprawiona w wydaniu libtpms 0.9.6.
\n
\u0179r\u00f3d\u0142o: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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\u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c […]<\/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-107141","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\udd47Luki w referencyjnej realizacji TPM 2.0, pozwalaj\u0105ce na dost\u0119p do danych w chipie kryptograficznym | ProHoster","description":"W kodzie referencyjnej realizacji specyfikacji TPM 2.0 (Trusted Platform Module) zidentyfikowano luki (CVE-2023-1017, CVE-2023-1018), prowadz\u0105ce do zapisu lub odczytu danych poza przydzielonym buforem.","canonical_url":"https:\/\/prohoster.info\/pl\/blog\/news\/uyazvimosti-v-etalonnoj-realizaczii-tpm-2-0-pozvolyayushhie-poluchit-dostup-k-dannym-v-kriptochipe","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"pl_PL","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\u0438 \u0432 \u044d\u0442\u0430\u043b\u043e\u043d\u043d\u043e\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 TPM 2.0, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0435 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u0434\u043e\u0441\u0442\u0443\u043f \u043a \u0434\u0430\u043d\u043d\u044b\u043c \u0432 \u043a\u0440\u0438\u043f\u0442\u043e\u0447\u0438\u043f\u0435 | ProHoster","og:description":"\u0412 \u043a\u043e\u0434\u0435 \u0441 \u044d\u0442\u0430\u043b\u043e\u043d\u043d\u043e\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0435\u0439 \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 TPM 2.0 (Trusted Platform Module) \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u044b \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 (CVE-2023-1017, CVE-2023-1018), \u043f\u0440\u0438\u0432\u043e\u0434\u044f\u0449\u0438\u0435 \u043a \u0437\u0430\u043f\u0438\u0441\u0438 \u0438\u043b\u0438 \u0447\u0442\u0435\u043d\u0438\u044e \u0434\u0430\u043d\u043d\u044b\u0445 \u0437\u0430 \u0433\u0440\u0430\u043d\u0438\u0446\u0435\u0439 \u0432\u044b\u0434\u0435\u043b\u0435\u043d\u043d\u043e\u0433\u043e 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