{"id":71036,"date":"2020-02-23T14:45:39","date_gmt":"2020-02-23T11:45:39","guid":{"rendered":"https:\/\/prohoster.info\/blog\/uyazvimost-v-gipervizore-vmm-razvivaemom-openbsd-okazalas-ispravlena-ne-polnostyu"},"modified":"2020-03-03T16:10:56","modified_gmt":"2020-03-03T13:10:56","slug":"uyazvimost-v-gipervizore-vmm-razvivaemom-openbsd-okazalas-ispravlena-ne-polnostyu","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pl\/blog\/news\/uyazvimost-v-gipervizore-vmm-razvivaemom-openbsd-okazalas-ispravlena-ne-polnostyu","title":{"rendered":"Luka w hipernadzorze VMM rozwijanym przez OpenBSD zosta\u0142a naprawiona nie do ko\u0144ca","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Po analizie wydanego przez projekt OpenBSD poprawki<\/a><\/noindex> luki w hipervizorze VMM, ujawnionej<\/a><\/noindex> w zesz\u0142ym tygodniu, badacz, kt\u00f3ry odkry\u0142 problem,
\nstwierdzi\u0142<\/a><\/noindex>, \u017ce zaproponowana u\u017cytkownikom \u0142atka nie rozwi\u0105zuje problemu. Badacz wskaza\u0142, \u017ce problem nie wynika z s\u0105siedniego przydzia\u0142u fizycznych adres\u00f3w systemu go\u015bcia (GPA, Guest Physical Address), ani fizycznych adres\u00f3w systemu hosta (HPA). Przy przeci\u0119ciu struktur\u0105 strony pami\u0119ci system go\u015bcia wci\u0105\u017c mo\u017ce nadpisa\u0107 zawarto\u015b\u0107 obszar\u00f3w pami\u0119ci j\u0105dra \u015brodowiska hosta.<\/p>\n

Luk\u0119 ujawni\u0142 Maksym Villard (Maxime Villard<\/a><\/noindex>), autor wykorzystywanych w NetBSD mechanizm\u00f3w randomizacji przestrzeni adresowej j\u0105dra (KASLR<\/a><\/noindex>, Kernel Address Space Layout Randomization) oraz hipervizora. NVMM<\/a><\/noindex>. <\/p>\n

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

\u0179r\u00f3d\u0142o: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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