{"id":52319,"date":"2020-02-18T08:41:57","date_gmt":"2020-02-18T05:41:57","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/uyazvimost-v-gipervizore-vmm-razvivaemom-proektom-openbsd"},"modified":"2020-02-18T08:41:57","modified_gmt":"2020-02-18T05:41:57","slug":"uyazvimost-v-gipervizore-vmm-razvivaemom-proektom-openbsd","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/uyazvimost-v-gipervizore-vmm-razvivaemom-proektom-openbsd","title":{"rendered":"VMM-i h\u00fcperviseeroris avastatud haavatavus, mille arendab OpenBSD projekt","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

OpenBSD-s tarnitud h\u00fcperviseerija VMM<\/a><\/noindex> tuvastatud haavatavus<\/a><\/noindex>, mis v\u00f5imaldab host-\u00fcsteemi m\u00e4lupiirkondade sisu kirjutamist k\u00fclaliss\u00fcsteemi k\u00fclje manipuleerimise kaudu. Probleem tuleneb sellest, et osa k\u00fclaliss\u00fcsteemi f\u00fc\u00fcsilisi aadresse (GPA, Guest Physical Address) on kajastatud tuuma virtuaalses aadressiruumis (KVA), kuid GPA-le ei kohaldata kirjutamise kaitset ainult lugemiseks m\u00e4rgitud KVA aladel. Vajalike kontrollide puudumine funktsioonis evmm_update_pvclock() v\u00f5imaldab edastada host-s\u00fcsteemi KVA-aadresse pmap'i kutsest ja kirjutada tuuma m\u00e4lu sisu.<\/p>\n

T\u00e4iendav teave: OpenBSD arendajad on v\u00e4lja antud plekk<\/a><\/noindex> haavatavuse parandamiseks.<\/p>\n

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

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

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