{"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\/hu\/blog\/news\/uyazvimost-v-polzovatelskom-okruzhenii-enlightenment-pozvolyayushhaya-poluchit-prava-root","title":{"rendered":"Sebezhet\u0151s\u00e9g az Enlightenment felhaszn\u00e1l\u00f3i k\u00f6rnyezet\u00e9ben, amely lehet\u0151v\u00e9 teszi a root jogok megszerz\u00e9s\u00e9t","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Az Enlightenment felhaszn\u00e1l\u00f3i k\u00f6rnyezet\u00e9ben felfedeztek egy sebezhet\u0151s\u00e9get (CVE-2022-37706), amely lehet\u0151v\u00e9 teszi, hogy egy jogos\u00edtv\u00e1ny n\u00e9lk\u00fcli helyi felhaszn\u00e1l\u00f3 root jogokkal k\u00f3dot hajtson v\u00e9gre. A sebezhet\u0151s\u00e9g jelenleg m\u00e9g nem jav\u00edtott (0-day), de egy nyilv\u00e1nosan el\u00e9rhet\u0151 exploit m\u00e1r l\u00e9tezik, amelyet Ubuntu 22.04 alatt teszteltek. <\/p>\n

A probl\u00e9ma az enlightenment_sys v\u00e9grehajthat\u00f3 f\u00e1jlban tal\u00e1lhat\u00f3, amelyet a suid root z\u00e1szl\u00f3val sz\u00e1ll\u00edtanak, \u00e9s bizonyos enged\u00e9lyezett parancsokat hajt v\u00e9gre a system() h\u00edv\u00e1son kereszt\u00fcl, mint p\u00e9ld\u00e1ul a t\u00e1rol\u00f3 mont\u00edroz\u00e1sa a mount seg\u00e9dprogram seg\u00edts\u00e9g\u00e9vel. A hib\u00e1san m\u0171k\u00f6d\u0151 funkci\u00f3 miatt, amely a system() h\u00edv\u00e1snak \u00e1tadand\u00f3 karakterl\u00e1ncot k\u00e9pezi, a v\u00e9grehajtott parancs argumentumaib\u00f3l elt\u00e1vol\u00edtj\u00e1k a dupla id\u00e9z\u0151jeleket, amit kihaszn\u00e1lhatunk saj\u00e1t k\u00f3dunk futtat\u00e1s\u00e1hoz. P\u00e9ld\u00e1ul a k\u00f6vetkez\u0151 parancsokkal: mkdir -p \/tmp\/net mkdir -p \u00ab\/tmp\/;\/tmp\/exploit\u00bb echo \u00ab\/bin\/sh\u00bb > \/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), \u00ab\/dev\/..\/tmp\/;\/tmp\/exploit\u00bb \/tmp\/\/\/net <\/p>\n

A dupla id\u00e9z\u0151jelek elt\u00e1vol\u00edt\u00e1sa miatt a megadott parancs helyett \u2018\/bin\/mount \u2026 \u00ab\/dev\/..\/tmp\/;\/tmp\/exploit\u00bb \/tmp\/\/\/net\u2019 a system() f\u00fcggv\u00e9nyhez egy olyan karakterl\u00e1nc lesz \u00e1tadva, amelyb\u0151l hi\u00e1nyzik a dupla id\u00e9z\u0151jel: \u2018\/bin\/mount \u2026 \/dev\/..\/tmp\/;\/tmp\/exploit \/tmp\/\/\/net\u2019, ami ahhoz vezet, hogy a \u2018\/tmp\/exploit \/tmp\/\/\/net\u2019 parancs k\u00fcl\u00f6n-k\u00fcl\u00f6n fut le, ahelyett, hogy a k\u00e9sz\u00fcl\u00e9khez tartoz\u00f3 \u00fatvonal r\u00e9sz\u00e9nek tekinten\u00e9. Az \u00ab\/dev\/..\/tmp\/\u00bb \u00e9s \u00ab\/tmp\/\/\/net\u00bb karakterl\u00e1ncokat a mount parancs argumentumainak ellen\u0151rz\u00e9s\u00e9nek megker\u00fcl\u00e9s\u00e9re tervezt\u00e9k az enlightenment_sys-ben (a csatlakoztatott eszk\u00f6znek \/dev\/-re kell kezd\u0151dnie, \u00e9s egy l\u00e9tez\u0151 f\u00e1jlra kell mutatnia, a h\u00e1rom \u2018\/\u2019 karaktere a csatlakoz\u00e1si pontra pedig a sz\u00fcks\u00e9ges \u00fatvonahossz el\u00e9r\u00e9s\u00e9re szolg\u00e1l).
\n
Forr\u00e1s: opennet.ru<\/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\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\udd47Sebezhet\u0151s\u00e9g az Enlightenment felhaszn\u00e1l\u00f3i k\u00f6rnyezet\u00e9ben, amely lehet\u0151v\u00e9 teszi a root jogok megszerz\u00e9s\u00e9t | ProHoster","description":"Az Enlightenment felhaszn\u00e1l\u00f3i k\u00f6rnyezet\u00e9ben felfedeztek egy sebezhet\u0151s\u00e9get (CVE-2022-37706), amely lehet\u0151v\u00e9 teszi, hogy egy jogos\u00edtv\u00e1ny n\u00e9lk\u00fcli helyi felhaszn\u00e1l\u00f3 root jogokkal k\u00f3dot hajtson v\u00e9gre.","canonical_url":"https:\/\/prohoster.info\/hu\/blog\/news\/uyazvimost-v-polzovatelskom-okruzhenii-enlightenment-pozvolyayushhaya-poluchit-prava-root","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"hu_HU","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\/hu\/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\/hu\/wp-json\/wp\/v2\/posts\/105107","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/comments?post=105107"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts\/105107\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/media?parent=105107"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/categories?post=105107"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/tags?post=105107"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}