{"id":108845,"date":"2023-06-05T15:10:26","date_gmt":"2023-06-05T13:10:26","guid":{"rendered":"https:\/\/prohoster.info\/?p=108845"},"modified":"2023-06-05T17:18:04","modified_gmt":"2023-06-05T15:18:04","slug":"obhod-ogranichenij-selinux-svyazannyh-s-zagruzkoj-modulej-yadra","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/obhod-ogranichenij-selinux-svyazannyh-s-zagruzkoj-modulej-yadra","title":{"rendered":"A SELinux-korl\u00e1toz\u00e1sok megker\u00fcl\u00e9se a kernelmodulok bet\u00f6lt\u00e9s\u00e9vel kapcsolatban","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Bemutat\u00e1sra ker\u00fclt a kernelmodulok bet\u00f6lt\u00e9s\u00e9nek tilalm\u00e1nak megker\u00fcl\u00e9si lehet\u0151s\u00e9ge, melyet a targeted SELinux-szab\u00e1lyok hajtanak v\u00e9gre egy vizsg\u00e1lt eszk\u00f6z\u00f6n (a konkr\u00e9t eszk\u00f6zt nem nevezik meg, \u00e9s a probl\u00e9ma m\u00e9rt\u00e9k\u00e9r\u0151l sem tudni, hogy mennyire \u00e9rinti a SELinux-szab\u00e1lyokat a firmware-eken \u00e9s disztrib\u00faci\u00f3kon). A modulok blokkol\u00e1sa a haszn\u00e1lt SELinux-szab\u00e1lyokban a finit_module rendszerh\u00edv\u00e1sra vonatkoz\u00f3 hozz\u00e1f\u00e9r\u00e9si korl\u00e1toz\u00e1son alapult, amely lehet\u0151v\u00e9 teszi a modul f\u00e1jlb\u00f3l val\u00f3 bet\u00f6lt\u00e9s\u00e9t, \u00e9s olyan seg\u00e9dprogramokban haszn\u00e1lj\u00e1k, mint az insmod. Ugyanakkor a SELinux-szab\u00e1lyok nem foglalkoztak az init_module rendszerh\u00edv\u00e1ssal, amely szint\u00e9n alkalmazhat\u00f3 a kernelmodulok k\u00f6zvetlen\u00fcl a mem\u00f3ri\u00e1b\u00f3l val\u00f3 bet\u00f6lt\u00e9s\u00e9re. <\/p>\n

A m\u00f3dszer bemutat\u00e1s\u00e1ra egy exploit protot\u00edpust k\u00e9sz\u00edtettek, amely lehet\u0151v\u00e9 teszi a kernel szint\u0171 k\u00f3d v\u00e9grehajt\u00e1s\u00e1t saj\u00e1t modul bet\u00f6lt\u00e9s\u00e9vel, \u00e9s teljes m\u00e9rt\u00e9kben letiltja a SELinux v\u00e9delm\u00e9t, ha a SELinux \u00e1ltal korl\u00e1tozott root-hozz\u00e1f\u00e9r\u00e9s \u00e1ll rendelkez\u00e9sre a rendszeren.
\n
Forr\u00e1s: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041f\u0440\u043e\u0434\u0435\u043c\u043e\u043d\u0441\u0442\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u0430 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043e\u0431\u0445\u043e\u0434\u0430 \u0437\u0430\u043f\u0440\u0435\u0442\u0430 \u0437\u0430\u0433\u0440\u0443\u0437\u043a\u0438 \u043c\u043e\u0434\u0443\u043b\u0435\u0439 \u044f\u0434\u0440\u0430, \u0440\u0435\u0430\u043b\u0438\u0437\u0443\u0435\u043c\u043e\u0433\u043e \u0432 targeted-\u043f\u0440\u0430\u0432\u0438\u043b\u0430\u0445 SELinux \u043d\u0430 \u043e\u0434\u043d\u043e\u043c \u0438\u0437 \u0438\u0437\u0443\u0447\u0435\u043d\u043d\u044b\u0445 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432 (\u043d\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u0435\u0442\u0441\u044f, \u043e \u043a\u0430\u043a\u043e\u043c \u0438\u043c\u0435\u043d\u043d\u043e \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0435 \u0440\u0435\u0447\u044c \u0438 \u043d\u0430\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0437\u0430\u0442\u0440\u0430\u0433\u0438\u0432\u0430\u0435\u0442 \u043f\u0440\u0430\u0432\u0438\u043b\u0430 SELinux \u0432 \u043f\u0440\u043e\u0448\u0438\u0432\u043a\u0430\u0445 \u0438 \u0434\u0438\u0441\u0442\u0440\u0438\u0431\u0443\u0442\u0438\u0432\u0430\u0445). \u0411\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u043a\u0430 \u043c\u043e\u0434\u0443\u043b\u0435\u0439 \u0432 \u0437\u0430\u0434\u0435\u0439\u0441\u0442\u0432\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u043f\u0440\u0430\u0432\u0438\u043b\u0430\u0445 SELinux \u043e\u0441\u043d\u043e\u0432\u044b\u0432\u0430\u043b\u0430\u0441\u044c \u043d\u0430 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u0438 \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u043a \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u043e\u043c\u0443 \u0432\u044b\u0437\u043e\u0432\u0443 finit_module, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u043c\u0443 \u0437\u0430\u0433\u0440\u0443\u0437\u0438\u0442\u044c \u043c\u043e\u0434\u0443\u043b\u044c \u0438\u0437 \u0444\u0430\u0439\u043b\u0430 \u0438 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u043c\u0443 \u0432 […]<\/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-108845","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\udd47A SELinux-korl\u00e1toz\u00e1sok megker\u00fcl\u00e9se a kernelmodulok bet\u00f6lt\u00e9s\u00e9vel kapcsolatban | ProHoster","description":"Bemutat\u00e1sra ker\u00fclt a kernelmodulok bet\u00f6lt\u00e9s\u00e9nek tilalm\u00e1nak megker\u00fcl\u00e9si lehet\u0151s\u00e9ge, melyet a targeted SELinux-szab\u00e1lyok hajtanak v\u00e9gre egy vizsg\u00e1lt eszk\u00f6z\u00f6n (a konkr\u00e9t eszk\u00f6zt nem nevezik meg, \u00e9s a probl\u00e9ma m\u00e9rt\u00e9k\u00e9r\u0151l sem tudni, hogy mennyire \u00e9rinti.","canonical_url":"https:\/\/prohoster.info\/hu\/blog\/news\/obhod-ogranichenij-selinux-svyazannyh-s-zagruzkoj-modulej-yadra","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\u041e\u0431\u0445\u043e\u0434 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u0439 SELinux, \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u0445 \u0441 \u0437\u0430\u0433\u0440\u0443\u0437\u043a\u043e\u0439 \u043c\u043e\u0434\u0443\u043b\u0435\u0439 \u044f\u0434\u0440\u0430 | ProHoster","og:description":"\u041f\u0440\u043e\u0434\u0435\u043c\u043e\u043d\u0441\u0442\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u0430 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043e\u0431\u0445\u043e\u0434\u0430 \u0437\u0430\u043f\u0440\u0435\u0442\u0430 \u0437\u0430\u0433\u0440\u0443\u0437\u043a\u0438 \u043c\u043e\u0434\u0443\u043b\u0435\u0439 \u044f\u0434\u0440\u0430, \u0440\u0435\u0430\u043b\u0438\u0437\u0443\u0435\u043c\u043e\u0433\u043e \u0432 targeted-\u043f\u0440\u0430\u0432\u0438\u043b\u0430\u0445 SELinux \u043d\u0430 \u043e\u0434\u043d\u043e\u043c \u0438\u0437 \u0438\u0437\u0443\u0447\u0435\u043d\u043d\u044b\u0445 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432 (\u043d\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u0435\u0442\u0441\u044f, \u043e \u043a\u0430\u043a\u043e\u043c \u0438\u043c\u0435\u043d\u043d\u043e \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0435 \u0440\u0435\u0447\u044c \u0438 \u043d\u0430\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430.","og:url":"https:\/\/prohoster.info\/hu\/blog\/news\/obhod-ogranichenij-selinux-svyazannyh-s-zagruzkoj-modulej-yadra","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":"2023-06-05T13:10:26+00:00","article:modified_time":"2023-06-05T15:18:04+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\/108845","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=108845"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts\/108845\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/media?parent=108845"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/categories?post=108845"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/tags?post=108845"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}