{"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\/fr\/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":"Une autre vuln\u00e9rabilit\u00e9 dans le sous-syst\u00e8me eBPF, permettant d'augmenter les privil\u00e8ges","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Dans le sous-syst\u00e8me eBPF, une autre vuln\u00e9rabilit\u00e9 a \u00e9t\u00e9 identifi\u00e9e (CVE manquant), tout comme le probl\u00e8me d'hier qui permet \u00e0 un utilisateur local non privil\u00e9gi\u00e9 d'ex\u00e9cuter du code au niveau du noyau Linux. Le probl\u00e8me se manifeste depuis le noyau Linux 5.8 et reste non corrig\u00e9 pour le moment. Un exploit fonctionnel devrait \u00eatre publi\u00e9 le 18 janvier. <\/p>\n

Une nouvelle vuln\u00e9rabilit\u00e9 est caus\u00e9e par une v\u00e9rification incorrecte des programmes eBPF transmis pour ex\u00e9cution. En particulier, le v\u00e9rificateur eBPF ne limitait pas correctement certains types de pointeurs *_OR_NULL, permettant ainsi de manipuler les pointeurs depuis les programmes eBPF et d'augmenter ses privil\u00e8ges. Pour bloquer l'exploitation de la vuln\u00e9rabilit\u00e9, il est propos\u00e9 d'interdire l'ex\u00e9cution des programmes BPF par les utilisateurs non privil\u00e9gi\u00e9s avec la commande \u00ab sysctl -w kernel.unprivileged_bpf_disabled=1 \u00bb.
\n
Source : opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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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 […]<\/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\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\udd47Une autre vuln\u00e9rabilit\u00e9 dans le sous-syst\u00e8me eBPF, permettant d'augmenter ses privil\u00e8ges | ProHoster","description":"Dans le 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