{"id":105107,"date":"2022-09-16T03:36:41","date_gmt":"2022-09-16T01:36:41","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-polzovatelskom-okruzhenii-enlightenment-pozvolyayushhaya-poluchit-prava-root"},"modified":"2022-09-16T03:36:41","modified_gmt":"2022-09-16T01:36:41","slug":"uyazvimost-v-polzovatelskom-okruzhenii-enlightenment-pozvolyayushhaya-poluchit-prava-root","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pl\/blog\/news\/uyazvimost-v-polzovatelskom-okruzhenii-enlightenment-pozvolyayushhaya-poluchit-prava-root","title":{"rendered":"Wra\u017cliwo\u015b\u0107 w \u015brodowisku u\u017cytkownika Enlightenment umo\u017cliwiaj\u0105ca uzyskanie praw roota","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>W \u015brodowisku u\u017cytkownika Enlightenment wykryto podatno\u015b\u0107 (CVE-2022-37706), kt\u00f3ra umo\u017cliwia nieuprzywilejowanemu lokalnemu u\u017cytkownikowi wykonanie kodu z uprawnieniami roota. Podatno\u015b\u0107 nie zosta\u0142a jeszcze naprawiona (0-day), ale w Internecie ju\u017c znajduje si\u0119 exploity, przetestowane w Ubuntu 22.04.        <\/p>\n<p>Problem wyst\u0119puje w pliku wykonywalnym enlightenment_sys, dostarczanym z flag\u0105 suid root, kt\u00f3ry wykonuje przez wywo\u0142anie system() okre\u015blone dozwolone komendy, takie jak montowanie dysku za pomoc\u0105 narz\u0119dzia mount. Z powodu b\u0142\u0119dnego dzia\u0142ania funkcji, kt\u00f3ra formuje ci\u0105g przesy\u0142any do wywo\u0142ania system(), z argument\u00f3w uruchamianej komendy usuwane s\u0105 cudzys\u0142owy, co mo\u017cna wykorzysta\u0107 do uruchomienia w\u0142asnego kodu. Na przyk\u0142ad, podczas uruchamiania        mkdir -p \/tmp\/net     mkdir -p &#171;\/tmp\/;\/tmp\/exploit&#187;     echo &#171;\/bin\/sh&#187; &gt; \/tmp\/exploit     chmod a+x \/tmp\/exploit     enlightenment_sys \/bin\/mount -o noexec,nosuid,utf8,nodev,iocharset=utf8,utf8=0,utf8=1,uid=$(id -u), &#171;\/dev\/..;\/tmp\/exploit&#187; \/tmp\/\/\/net        <\/p>\n<p>Z powodu usuni\u0119cia podw\u00f3jnych cudzys\u0142ow\u00f3w, zamiast wskazanej komendy &#8216;\/bin\/mount \u2026 &#171;\/dev\/..;\/tmp\/exploit&#187; \/tmp\/\/\/net&#8217; do funkcji system() zostanie przekazany ci\u0105g bez podw\u00f3jnych cudzys\u0142ow\u00f3w &#8216;\/bin\/mount \u2026 \/dev\/..;\/tmp\/exploit \/tmp\/\/\/net&#8217;, co spowoduje oddzielne wykonanie komendy &#8216;\/tmp\/exploit \/tmp\/\/\/net&#8217; zamiast przetwarzania jako cz\u0119\u015b\u0107 \u015bcie\u017cki do urz\u0105dzenia. Ci\u0105gi &#171;\/dev\/..&#187; i &#171;\/tmp\/\/\/net&#187; zosta\u0142y dobrane w celu obej\u015bcia weryfikacji argument\u00f3w komendy mount w enlightenment_sys (urz\u0105dzenie montowane musi zaczyna\u0107 si\u0119 od \/dev\/ i wskazywa\u0107 na istniej\u0105cy plik, a trzy znaki &#171;\/&#187; w punkcie montowania wskazane s\u0105 w celu osi\u0105gni\u0119cia wymaganego rozmiaru \u015bcie\u017cki).<br \/>\n<br \/>\u0179r\u00f3d\u0142o: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57791\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u0441\u043a\u043e\u043c \u043e\u043a\u0440\u0443\u0436\u0435\u043d\u0438\u0438 Enlightenment \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2022-37706), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0435\u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u043c\u0443 \u043b\u043e\u043a\u0430\u043b\u044c\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 \u0441 \u043f\u0440\u0430\u0432\u0430\u043c\u0438 root. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u043e\u043a\u0430 \u043d\u0435 \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0430 (0-day), \u043d\u043e \u0432 \u043e\u0442\u043a\u0440\u044b\u0442\u043e\u043c \u0434\u043e\u0441\u0442\u0443\u043f\u0435 \u0443\u0436\u0435 \u0438\u043c\u0435\u0435\u0442\u0441\u044f \u044d\u043a\u0441\u043f\u043b\u043e\u0438\u0442, \u043f\u0440\u043e\u0442\u0435\u0441\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u0432 Ubuntu 22.04. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043f\u0440\u0438\u0441\u0443\u0442\u0441\u0442\u0432\u0443\u0435\u0442 \u0432 \u0438\u0441\u043f\u043e\u043b\u043d\u044f\u0435\u043c\u043e\u043c \u0444\u0430\u0439\u043b\u0435 enlightenment_sys, \u043f\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u043c\u043e\u043c \u0441 \u0444\u043b\u0430\u0433\u043e\u043c suid root \u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u044e\u0449\u0435\u043c \u0447\u0435\u0440\u0435\u0437 \u0432\u044b\u0437\u043e\u0432 system() \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u044b\u0435 \u0440\u0430\u0437\u0440\u0435\u0448\u0451\u043d\u043d\u044b\u0435 \u043a\u043e\u043c\u0430\u043d\u0434\u044b, \u0442\u0430\u043a\u0438\u0435 \u043a\u0430\u043a \u043c\u043e\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u043d\u0430\u043a\u043e\u043f\u0438\u0442\u0435\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-105107","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\" content=\"\u0412 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u0441\u043a\u043e\u043c \u043e\u043a\u0440\u0443\u0436\u0435\u043d\u0438\u0438 Enlightenment \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2022-37706), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0435\u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u043c\u0443 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roota.","canonical_url":"https:\/\/prohoster.info\/pl\/blog\/news\/uyazvimost-v-polzovatelskom-okruzhenii-enlightenment-pozvolyayushhaya-poluchit-prava-root","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"pl_PL","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u0441\u043a\u043e\u043c \u043e\u043a\u0440\u0443\u0436\u0435\u043d\u0438\u0438 Enlightenment, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f 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