{"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\/et\/blog\/news\/v-ubuntu-20-10-budet-ogranichen-dostup-k-dmesg","title":{"rendered":"Sebastian Krause m\u00e4\u00e4ras veidra \u00fchilduvuse allika teenusega","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Ubuntu arendajad <noindex><a rel=\"nofollow\" href=\"https:\/\/lists.ubuntu.com\/archives\/ubuntu-devel\/2020-July\/041079.html\">on kokku leppinud<\/a><\/noindex> Juurte utiliidi \/usr\/bin\/dmesg juurdep\u00e4\u00e4s on piiratud ainult kasutajatega, kes kuuluvad &#171;adm&#187; r\u00fchma. Praegu ei ole mitteprivilegeeritud Ubuntu kasutajatel juurdep\u00e4\u00e4s failidele \/var\/log\/kern.log, \/var\/log\/syslog ega s\u00fcsteemi\u00fcritustele journalctl-is, kuid nad saavad vaadata tuuma\u00fcrituste logi dmesg kaudu.<\/p>\n<p>P\u00f5hjuseks on mainitud, et dmesg v\u00e4ljundis on teavet, mida r\u00fcndajad saavad kasutada privileegide t\u00f5stmiseks eksploiteerimise lihtsustamiseks. N\u00e4iteks kuvab dmesg vigu t\u00f5ttu m\u00e4llu j\u00e4\u00e4va stack dump'i ning on v\u00f5imalik tuvastada struktuuride aadresse tuumas, mis v\u00f5ivad v\u00f5imaldada KASLR-mehhanismi \u00fcmberminemist. R\u00fcndaja v\u00f5ib kasutada dmesg'i tagasisideks, j\u00e4rk-j\u00e4rgult kohandades oma eksploiti, j\u00e4lgides oops-andeid logis p\u00e4rast eba\u00f5nnestunud r\u00fcnnakukatseid.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Allikas: <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 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" 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