{"id":102960,"date":"2022-01-13T21:36:44","date_gmt":"2022-01-13T19:36:44","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/%d0%b5%d1%89%d1%91-%d0%be%d0%b4%d0%bd%d0%b0-%d1%83%d1%8f%d0%b7%d0%b2%d0%b8%d0%bc%d0%be%d1%81%d1%82%d1%8c-%d0%b2-%d0%bf%d0%be%d0%b4%d1%81%d0%b8%d1%81%d1%82%d0%b5%d0%bc%d0%b5-ebpf-%d0%bf%d0%be%d0%b7"},"modified":"2022-01-13T21:36:44","modified_gmt":"2022-01-13T19:36:44","slug":"%d0%b5%d1%89%d1%91-%d0%be%d0%b4%d0%bd%d0%b0-%d1%83%d1%8f%d0%b7%d0%b2%d0%b8%d0%bc%d0%be%d1%81%d1%82%d1%8c-%d0%b2-%d0%bf%d0%be%d0%b4%d1%81%d0%b8%d1%81%d1%82%d0%b5%d0%bc%d0%b5-ebpf-%d0%bf%d0%be%d0%b7","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hr\/blog\/news\/%d0%b5%d1%89%d1%91-%d0%be%d0%b4%d0%bd%d0%b0-%d1%83%d1%8f%d0%b7%d0%b2%d0%b8%d0%bc%d0%be%d1%81%d1%82%d1%8c-%d0%b2-%d0%bf%d0%be%d0%b4%d1%81%d0%b8%d1%81%d1%82%d0%b5%d0%bc%d0%b5-ebpf-%d0%bf%d0%be%d0%b7","title":{"rendered":"Jo\u0161 jedna ranjivost u eBPF podsklopu koja omogu\u0107ava pove\u0107anje vlastitih privilegija","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>U eBPF podsustavu otkrivena je jo\u0161 jedna ranjivost (CVE ne postoji), poput ju\u010dera\u0161njeg problema koji omogu\u0107uje lokalnom neprivilegiranom korisniku da izvr\u0161i kod na razini jezgre Linuxa. Problem se javlja od jezgre Linux 5.8 i za sada ostaje neispravljen. Radni eksploitat obe\u0107avaju objaviti 18. sije\u010dnja.      <\/p>\n<p>Nova ranjivost uzrokovana je neispravnim provjerama koje se izvode na eBPF programima. Naime, eBPF verifikator nije pravilno ograni\u010dio neke tipove pokaziva\u010da *_OR_NULL, \u0161to je omogu\u0107ilo manipulaciju pokaziva\u010dima iz eBPF programa i postizanje povi\u0161enih privilegija. Kako bi se onemogu\u0107ila eksploatacija ranjivosti, predla\u017ee se zabrana izvr\u0161avanja BPF programa za neprivilegirane korisnike pomo\u0107u naredbe &#171;sysctl -w kernel.unprivileged_bpf_disabled=1&#187;.<br \/>\n<br \/>Izvor: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=56504\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u0435 eBPF \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0435\u0449\u0451 \u043e\u0434\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0443\u0435\u0442), \u043a\u0430\u043a \u0438 \u0432\u0447\u0435\u0440\u0430\u0448\u043d\u044f\u044f \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u043e\u043c\u0443 \u043d\u0435\u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u043c\u0443 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044e \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043a\u043e\u0434 \u043d\u0430 \u0443\u0440\u043e\u0432\u043d\u0435 \u044f\u0434\u0440\u0430 Linux. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043d\u0430\u0447\u0438\u043d\u0430\u044f \u0441 \u044f\u0434\u0440\u0430 Linux 5.8 \u0438 \u043f\u043e\u043a\u0430 \u043e\u0441\u0442\u0430\u0451\u0442\u0441\u044f \u043d\u0435\u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u043d\u043e\u0439. \u0420\u0430\u0431\u043e\u0447\u0438\u0439 \u044d\u043a\u0441\u043f\u043b\u043e\u0438\u0442 \u043e\u0431\u0435\u0449\u0430\u044e\u0442 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u0442\u044c 18 \u044f\u043d\u0432\u0430\u0440\u044f. \u041d\u043e\u0432\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432\u044b\u0437\u0432\u0430\u043d\u0430 \u043d\u0435\u043a\u043e\u0440\u0440\u0435\u043a\u0442\u043d\u043e\u0439 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u043e\u0439 \u043f\u0435\u0440\u0435\u0434\u0430\u0432\u0430\u0435\u043c\u044b\u0445 \u0434\u043b\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f eBPF-\u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c. \u0412 \u0447\u0430\u0441\u0442\u043d\u043e\u0441\u0442\u0438 \u0432\u0435\u0440\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440 eBPF \u0434\u043e\u043b\u0436\u043d\u044b\u043c \u043e\u0431\u0440\u0430\u0437\u043e\u043c [&hellip;]<\/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-102960","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u0435 eBPF \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0435\u0449\u0451 \u043e\u0434\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0443\u0435\u0442), \u043a\u0430\u043a \u0438 \u0432\u0447\u0435\u0440\u0430\u0448\u043d\u044f\u044f \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 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