{"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\/ro\/blog\/news\/uyazvimost-v-polzovatelskom-okruzhenii-enlightenment-pozvolyayushhaya-poluchit-prava-root","title":{"rendered":"O vulnerabilitate \u00een mediul utilizatorului Enlightenment, care permite ob\u021binerea drepturilor de root","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\u00cen mediul de utilizator Enlightenment a fost identificat\u0103 o vulnerabilitate (CVE-2022-37706) care permite unui utilizator local f\u0103r\u0103 privilegii s\u0103 execute cod cu drepturi de root. Vulnerabilitatea nu a fost \u00eenc\u0103 corectat\u0103 (0-day), dar exist\u0103 deja un exploit disponibil public, testat pe Ubuntu 22.04. <\/p>\n

Problema exist\u0103 \u00een fi\u0219ierul executabil enlightenment_sys, livrat cu steagul suid root \u0219i care execut\u0103 prin apelul system() anumite comenzi autorizate, cum ar fi montarea unui dispozitiv cu utilitarul mount. Datorit\u0103 func\u021bion\u0103rii necorespunz\u0103toare a func\u021biei care formeaz\u0103 \u0219irul transmis \u00een apelul system(), ghilimelele din argumentele comenzii apelate sunt eliminate, ceea ce poate fi folosit pentru a rula propriul cod. De exemplu, la executarea mkdir -p \/tmp\/net mkdir -p \u201e\/tmp\/;\/tmp\/exploit\u201d echo \u201e\/bin\/sh\u201d > \/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), \u201e\/dev\/..\/tmp\/;\/tmp\/exploit\u201d \/tmp\/\/\/net <\/p>\n

din cauza elimin\u0103rii ghilimelelor duble, \u00een locul comenzii specificate \u2018\/bin\/mount \u2026 \u201e\/dev\/..\/tmp\/;\/tmp\/exploit\u201d \/tmp\/\/\/net\u2019 la func\u021bia system() va fi transmis un \u0219ir f\u0103r\u0103 ghilimele duble \u2018\/bin\/mount \u2026 \/dev\/..\/tmp\/;\/tmp\/exploit \/tmp\/\/\/net\u2019, ceea ce va duce la executarea separat\u0103 a comenzii \u2018\/tmp\/exploit \/tmp\/\/\/net\u2019 \u00een loc de a fi tratat\u0103 ca parte a c\u0103ii c\u0103tre dispozitiv. \u0218irurile \u201e\/dev\/..\/tmp\/\u201d \u0219i \u201e\/tmp\/\/\/net\u201d sunt alese pentru a ocoli verificarea argumentelor comenzii mount \u00een enlightenment_sys (dispozitivul montat trebuie s\u0103 \u00eenceap\u0103 cu \/dev\/ \u0219i s\u0103 se refere la un fi\u0219ier existent, iar cele trei simboluri \u201e\/\u201d \u00een punctul de montare sunt specificate pentru a atinge lungimea dorit\u0103 a c\u0103ii).
\n
Sursa: opennet.ro<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\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 […]<\/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\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\udd47Vulnerabilitate \u00een mediul de utilizator Enlightenment, care permite ob\u021binerea drepturilor de root | ProHoster","description":"\u00cen mediul de utilizator Enlightenment a fost identificat\u0103 o vulnerabilitate (CVE-2022-37706) care permite unui utilizator local f\u0103r\u0103 privilegii s\u0103 execute cod cu drepturi de root.","canonical_url":"https:\/\/prohoster.info\/ro\/blog\/news\/uyazvimost-v-polzovatelskom-okruzhenii-enlightenment-pozvolyayushhaya-poluchit-prava-root","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"ro_RO","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 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u043f\u0440\u0430\u0432\u0430 root | ProHoster","og:description":"\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.","og:url":"https:\/\/prohoster.info\/ro\/blog\/news\/uyazvimost-v-polzovatelskom-okruzhenii-enlightenment-pozvolyayushhaya-poluchit-prava-root","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2022-09-16T01:36:41+00:00","article:modified_time":"2022-09-16T01:36:41+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":[],"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/posts\/105107","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/comments?post=105107"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/posts\/105107\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/media?parent=105107"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/categories?post=105107"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/tags?post=105107"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}