{"id":87102,"date":"2020-07-03T19:42:01","date_gmt":"2020-07-03T17:42:01","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-ubuntu-20-10-budet-ogranichen-dostup-k-dmesg"},"modified":"2020-07-03T19:42:01","modified_gmt":"2020-07-03T17:42:01","slug":"v-ubuntu-20-10-budet-ogranichen-dostup-k-dmesg","status":"publish","type":"post","link":"https:\/\/prohoster.info\/fr\/blog\/news\/v-ubuntu-20-10-budet-ogranichen-dostup-k-dmesg","title":{"rendered":"L'acc\u00e8s \u00e0 dmesg sera restreint dans Ubuntu 20.10","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Les d\u00e9veloppeurs d'Ubuntu <noindex><a rel=\"nofollow\" href=\"https:\/\/lists.ubuntu.com\/archives\/ubuntu-devel\/2020-July\/041079.html\">ont approuv\u00e9<\/a><\/noindex> L'acc\u00e8s \u00e0 l'utilitaire \/usr\/bin\/dmesg est limit\u00e9 aux utilisateurs faisant partie du groupe \u00ab adm \u00bb. Actuellement, les utilisateurs non privil\u00e9gi\u00e9s d'Ubuntu n'ont pas acc\u00e8s \u00e0 \/var\/log\/kern.log, \/var\/log\/syslog et aux \u00e9v\u00e9nements syst\u00e8me dans journalctl, mais peuvent consulter le journal des \u00e9v\u00e9nements du noyau via dmesg.<\/p>\n<p>La raison \u00e9voqu\u00e9e est la pr\u00e9sence dans la sortie de dmesg d'informations pouvant \u00eatre utilis\u00e9es par des attaquants pour faciliter la cr\u00e9ation d'exploits d'\u00e9l\u00e9vation de privil\u00e8ges. Par exemple, dans dmesg, en cas d'\u00e9chec, un dump de la pile est affich\u00e9 et il est possible de localiser les adresses des structures dans le noyau, ce qui peut aider \u00e0 contourner le m\u00e9canisme KASLR. Un attaquant peut utiliser dmesg comme retour d'information, ajustant progressivement l'exploit tout en observant les messages oops dans le journal apr\u00e8s des tentatives d'attaque infructueuses.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Source : <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53280\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 Ubuntu \u0441\u043e\u0433\u043b\u0430\u0441\u043e\u0432\u0430\u043b\u0438 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u0435 \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u043a \u0443\u0442\u0438\u043b\u0438\u0442\u0435 \/usr\/bin\/dmesg \u0442\u043e\u043b\u044c\u043a\u043e \u0434\u043b\u044f \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439, \u0432\u0445\u043e\u0434\u044f\u0449\u0438\u0445 \u0432 \u0433\u0440\u0443\u043f\u043f\u0443 &#171;adm&#187;. \u0412 \u043d\u0430\u0441\u0442\u043e\u044f\u0449\u0435\u0435 \u0432\u0440\u0435\u043c\u044f \u043d\u0435\u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0435 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0438 Ubuntu \u043d\u0435 \u0438\u043c\u0435\u044e\u0442 \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u043a \/var\/log\/kern.log, \/var\/log\/syslog \u0438 \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u044b\u043c \u0441\u043e\u0431\u044b\u0442\u0438\u044f\u043c \u0432 journalctl, \u043d\u043e \u043c\u043e\u0433\u0443\u0442 \u043f\u043e\u0441\u043c\u043e\u0442\u0440\u0435\u0442\u044c \u043b\u043e\u0433 \u0441\u043e\u0431\u044b\u0442\u0438\u0439 \u044f\u0434\u0440\u0430 \u0447\u0435\u0440\u0435\u0437 dmesg. \u0412 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u043f\u0440\u0438\u0447\u0438\u043d\u044b \u0443\u043f\u043e\u043c\u0438\u043d\u0430\u0435\u0442\u0441\u044f \u043d\u0430\u043b\u0438\u0447\u0438\u0435 \u0432 \u0432\u044b\u0432\u043e\u0434\u0435 dmesg \u0441\u0432\u0435\u0434\u0435\u043d\u0438\u0439, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043c\u043e\u0433\u0443\u0442 \u0431\u044b\u0442\u044c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u044b \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0438\u043c\u0438 \u0434\u043b\u044f [&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-87102","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - aioseo.com -->\n\t<meta name=\"description\" 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