{"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\/it\/blog\/novosti-interneta\/uyazvimost-v-gipervizore-vmm-razvivaemom-openbsd-okazalas-ispravlena-ne-polnostyu","title":{"rendered":"La vulnerabilit\u00e0 nel hypervisor VMM, sviluppato da OpenBSD, \u00e8 stata corretta solo parzialmente.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Dopo l'analisi della vulnerabilit\u00e0 rilasciata dal progetto OpenBSD le patch<\/a><\/noindex> nel hypervisor VMM, identificato<\/a><\/noindex> la scorsa settimana, il ricercatore che ha scoperto il problema
\nha concluso<\/a><\/noindex>, che la patch proposta agli utenti non risolve i problemi. Il ricercatore ha indicato che il problema non deriva dalla distribuzione adiacente degli indirizzi fisici del sistema ospite (GPA, Guest Physical Address), cos\u00ec come degli indirizzi fisici del sistema host (HPA). Durante l'intersezione della struttura della pagina di memoria, il sistema ospite pu\u00f2 comunque sovrascrivere il contenuto delle aree di memoria del kernel dell'ambiente host.<\/p>\n

La vulnerabilit\u00e0 \u00e8 stata scoperta da Maxim Villard (Maxime Villard<\/a><\/noindex>), autore dei meccanismi di randomizzazione dello spazio degli indirizzi del kernel utilizzati in NetBSD (KASLR<\/a><\/noindex>, Kernel Address Space Layout Randomization) e dell'hypervisor NVMM<\/a><\/noindex>. <\/p>\n

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

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

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Il ricercatore ha indicato che il problema non deriva dalla distribuzione adiacente degli indirizzi fisici del sistema ospite (GPA, Guest Physical Address), cos\u00ec come degli indirizzi fisici del sistema host (HPA). 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