{"id":37426,"date":"2019-10-31T22:17:33","date_gmt":"2019-10-31T19:17:33","guid":{"rendered":"https:\/\/prohoster.info\/blog\/uyazvimost-pozvolyayushhaya-vyjti-iz-izolirovannogo-okruzheniya-qemu\/"},"modified":"2019-10-31T22:17:33","modified_gmt":"2019-10-31T19:17:33","slug":"uyazvimost-pozvolyayushhaya-vyjti-iz-izolirovannogo-okruzheniya-qemu","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/novosti-interneta\/uyazvimost-pozvolyayushhaya-vyjti-iz-izolirovannogo-okruzheniya-qemu","title":{"rendered":"Vulnerabilitet q\u00eb lejon daljen nga ambienti i izoluar QEMU.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Zbulua<\/a><\/noindex> detajet e nj\u00eb dob\u00ebsie kritike (CVE-2019-14378<\/a><\/noindex>) n\u00eb procesorin SLIRP, i p\u00ebrdorur si default n\u00eb QEMU p\u00ebr organizimin e kanaleve t\u00eb komunikimit midis adapatorit virtual t\u00eb rrjetit n\u00eb sistemin e mysafir\u00ebve dhe backend-it t\u00eb rrjetit n\u00eb an\u00ebn e QEMU. Problemi gjithashtu preket nga sistemet e virtualizimit t\u00eb bazuara n\u00eb KVM (n\u00eb modin Usermode<\/a><\/noindex>) dhe Virtualbox, t\u00eb cilat p\u00ebrdorin backend-in slirp nga QEMU, si dhe aplikacionet q\u00eb p\u00ebrdorin stekun e rrjetit n\u00eb hap\u00ebsir\u00ebn e p\u00ebrdoruesit libSLIRP<\/a><\/noindex> (emulator TCP\/IP).<\/p>\n

Dob\u00ebsia lejon ekzekutimin e kodeve n\u00eb an\u00ebn e sistemit host me t\u00eb drejtat e procesit t\u00eb p\u00ebrpunuesit QEMU gjat\u00eb d\u00ebrgimit nga sistemi i mysafir\u00ebve t\u00eb nj\u00eb pakete rrjeti t\u00eb formatuar n\u00eb m\u00ebnyr\u00eb speciale, e cila k\u00ebrkon fragmentimin. P\u00ebr shkak t\u00eb nj\u00eb gabimi n\u00eb funksionin ip_reass(), i thirrur gjat\u00eb riparimit t\u00eb paketimeve q\u00eb merren, fragmenti i par\u00eb mund t\u00eb mos vendoset n\u00eb tamponin e ve\u00e7uar dhe bishti i tij do t\u00eb shkruhet n\u00eb zonat e kujtes\u00ebs pas tamponit. <\/p>\n

P\u00ebr t\u00eb testuar tashm\u00eb disponibel<\/a><\/noindex> prototipin funksional t\u00eb eksploitit, i cili parashikon anashkalimin e ASLR dhe ekzekutimin e kodit p\u00ebrmes rishkrimit t\u00eb kujtes\u00ebs s\u00eb arrays main_loop_tlg, duke p\u00ebrfshir\u00eb list\u00ebn QEMUTimerList me procesor\u00ebt q\u00eb thirren nga timers.
\nVulnerabiliteti \u00ebsht\u00eb zgjidhur n\u00eb Fedora<\/a><\/noindex> dhe SUSE\/openSUSE<\/a><\/noindex>, por mbetet i pa zgjidhur n\u00eb Debian<\/a><\/noindex>, Arch Linux<\/a><\/noindex> dhe FreeBSD<\/a><\/noindex>. N\u00eb Ubuntu<\/a><\/noindex> dhe RHEL<\/a><\/noindex> problemi nuk shfaqet p\u00ebr shkak t\u00eb mos p\u00ebrdorimit t\u00eb slirp. Vulnerabiliteti mbetet i pa zgjidhur n\u00eb versionin m\u00eb t\u00eb fundit libslirp 4.0<\/a><\/noindex> (ndryshimi \u00ebsht\u00eb n\u00eb dispozicion si patch<\/a><\/noindex>).<\/p>\n

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

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

\u0420\u0430\u0441\u043a\u0440\u044b\u0442\u044b \u0434\u0435\u0442\u0430\u043b\u0438 \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 (CVE-2019-14378) \u0432 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0435 SLIRP, \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u043c \u0432 QEMU \u0434\u043b\u044f \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u043a\u0430\u043d\u0430\u043b\u0430 \u0441\u0432\u044f\u0437\u0438 \u043c\u0435\u0436\u0434\u0443 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u044b\u043c \u0441\u0435\u0442\u0435\u0432\u044b\u043c \u0430\u0434\u0430\u043f\u0442\u0435\u0440\u043e\u043c \u0432 \u0433\u043e\u0441\u0442\u0435\u0432\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u0438 \u0441\u0435\u0442\u0435\u0432\u044b\u043c \u0431\u044d\u043a\u0435\u043d\u0434\u043e\u043c \u043d\u0430 \u0441\u0442\u043e\u0440\u043e\u043d\u0435 QEMU. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0442\u0430\u043a\u0436\u0435 \u0437\u0430\u0442\u0440\u0430\u0433\u0438\u0432\u0430\u0435\u0442 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043d\u0430 \u0431\u0430\u0437\u0435 KVM (\u0432 \u0440\u0435\u0436\u0438\u043c\u0435 Usermode) \u0438 Virtualbox, \u0432 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442\u0441\u044f \u0431\u044d\u043a\u0435\u043d\u0434 slirp \u0438\u0437 QEMU, \u0430 \u0442\u0430\u043a\u0436\u0435 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f, \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u044e\u0449\u0438\u0435 \u0441\u0435\u0442\u0435\u0432\u043e\u0439 […]<\/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-37426","post","type-post","status-publish","format-standard","hentry","category-novosti-interneta"],"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\udd47Vulnerabilitet q\u00eb lejon daljen nga nj\u00eb mjedis i izoluar QEMU | ProHoster","description":"Detajet e nj\u00eb vulnerabiliteti kritik (CVE-2019-14378) jan\u00eb zbuluar n\u00eb trajtuesin SLIRP, i cili p\u00ebrdoret si parazgjedhje n\u00eb QEMU p\u00ebr t\u00eb organizuar nj\u00eb kanal komunikimi midis adapterit t\u00eb rrjetit virtual n\u00eb sistemin e mysafir\u00ebve dhe backendit t\u00eb rrjetit n\u00eb an\u00ebn e QEMU. 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