{"id":103829,"date":"2022-04-20T21:36:45","date_gmt":"2022-04-20T19:36:45","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-libinput-privodyashhaya-k-vypolneniyu-koda-pri-podklyuchenii-vredonosnogo-ustrojstva"},"modified":"2022-04-20T21:36:45","modified_gmt":"2022-04-20T19:36:45","slug":"uyazvimost-v-libinput-privodyashhaya-k-vypolneniyu-koda-pri-podklyuchenii-vredonosnogo-ustrojstva","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/uyazvimost-v-libinput-privodyashhaya-k-vypolneniyu-koda-pri-podklyuchenii-vredonosnogo-ustrojstva","title":{"rendered":"Sebezhet\u0151s\u00e9g a libinputban, amely k\u00f3d v\u00e9grehajt\u00e1s\u00e1t eredm\u00e9nyezi rosszindulat\u00fa eszk\u00f6z csatlakoztat\u00e1sakor","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

A libinput 1.20.1 k\u00f6nyvt\u00e1rban, amely egy egys\u00e9ges bevitelkezel\u0151 veremr\u0151l gondoskodik, lehet\u0151v\u00e9 t\u00e9ve az azonos esem\u00e9nykezel\u00e9si eszk\u00f6z\u00f6k haszn\u00e1lat\u00e1t Wayland \u00e9s X.Org alap\u00fa k\u00f6rnyezetekben, kijav\u00edtott\u00e1k a (CVE-2022-1215) sebezhet\u0151s\u00e9get, amely lehet\u0151v\u00e9 teszi, hogy a rendszerhez csatlakoztatott speci\u00e1lisan m\u00f3dos\u00edtott\/emul\u00e1lt bevitelkezel\u0151 eszk\u00f6z r\u00e9v\u00e9n k\u00f3d v\u00e9grehajt\u00e1sa t\u00f6rt\u00e9njen. A probl\u00e9ma X.Org \u00e9s Wayland alap\u00fa k\u00f6rnyezetekben jelentkezik, \u00e9s helyi eszk\u00f6zcsatlakoz\u00e1sok sor\u00e1n, illetve Bluetooth interf\u00e9sszel rendelkez\u0151 eszk\u00f6z\u00f6kkel val\u00f3 manipul\u00e1ci\u00f3k sor\u00e1n is kihaszn\u00e1lhat\u00f3. Ha az X-server root jogosults\u00e1gokkal fut, a sebezhet\u0151s\u00e9g lehet\u0151v\u00e9 teszi a magasabb jogosults\u00e1g\u00fa k\u00f3d v\u00e9grehajt\u00e1s\u00e1t. <\/p>\n

A probl\u00e9ma a k\u00f3d egy form\u00e1z\u00e1si hib\u00e1j\u00e1b\u00f3l ad\u00f3dik, amely a k\u00e9sz\u00fcl\u00e9k csatlakoz\u00e1s\u00e1r\u00f3l inform\u00e1ci\u00f3t napl\u00f3z\u00f3 funkci\u00f3t felel\u0151s. K\u00fcl\u00f6n\u00f6sen az evdev_log_msg f\u00fcggv\u00e9ny a snprintf h\u00edv\u00e1s\u00e1val m\u00f3dos\u00edtotta a napl\u00f3bejegyz\u00e9s form\u00e1z\u00e1si sztringj\u00e9t, amelyhez a k\u00e9sz\u00fcl\u00e9k neve ker\u00fclt el\u0151tagk\u00e9nt. Ezut\u00e1n a m\u00f3dos\u00edtott sztring a log_msg_va f\u00fcggv\u00e9nynek ker\u00fclt \u00e1tad\u00e1sra, amely viszont a printf f\u00fcggv\u00e9nyt haszn\u00e1lta. \u00cdgy a printf els\u0151 argumentum\u00e1ban, amelynek a form\u00e1z\u00f3 karakterek elemz\u00e9se t\u00f6rt\u00e9nik, ellen\u0151rizetlen k\u00fcls\u0151 adatok ker\u00fcltek, \u00e9s a t\u00e1mad\u00f3 kezdem\u00e9nyezhette a verem megs\u00e9rt\u00e9s\u00e9t \u00fagy, hogy a k\u00e9sz\u00fcl\u00e9k neve olyan form\u00e1z\u00f3 karaktereket tartalmazott (p\u00e9ld\u00e1ul \"Evil %s\").
\n
Forr\u00e1s: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0435 libinput 1.20.1, \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0435\u0439 \u0443\u043d\u0438\u0444\u0438\u0446\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u0441\u0442\u0435\u043a \u0432\u0432\u043e\u0434\u0430, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0439 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u043e\u0434\u043d\u0438 \u0438 \u0442\u0435 \u0436\u0435 \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0441\u043e\u0431\u044b\u0442\u0438\u0439 \u043e\u0442 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432 \u0432\u0432\u043e\u0434\u0430 \u0432 \u043e\u043a\u0440\u0443\u0436\u0435\u043d\u0438\u044f\u0445 \u043d\u0430 \u0431\u0430\u0437\u0435 Wayland \u0438 X.Org, \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2022-1215), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u043e\u0432\u0430\u0442\u044c \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u0441\u0432\u043e\u0435\u0433\u043e \u043a\u043e\u0434\u0430 \u043f\u0440\u0438 \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0438 \u043a \u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043c\u043e\u0434\u0438\u0444\u0438\u0446\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e\/\u044d\u043c\u0443\u043b\u0438\u0440\u0443\u0435\u043c\u043e\u0433\u043e \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0430 \u0432\u0432\u043e\u0434\u0430. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0432 \u043e\u043a\u0440\u0443\u0436\u0435\u043d\u0438\u044f\u0445 \u043d\u0430 \u0431\u0430\u0437\u0435 X.Org \u0438 Wayland, \u0438 \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c […]<\/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-103829","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 libinput sebezhet\u0151s\u00e9ge, amely lehet\u0151v\u00e9 teszi a k\u00f3d v\u00e9grehajt\u00e1s\u00e1t egy rosszindulat\u00fa eszk\u00f6z csatlakoztat\u00e1sa eset\u00e9n | ProHoster","description":"A libinput 1.20.1 k\u00f6nyvt\u00e1rban, amely egy egys\u00e9ges bevitelkezel\u0151 veremr\u0151l 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