{"id":38921,"date":"2019-10-31T22:26:45","date_gmt":"2019-10-31T19:26:45","guid":{"rendered":"https:\/\/prohoster.info\/blog\/uyazvimost-v-sudo-pozvolyaet-vypolnyat-komandy-s-pravami-superpolzovatelya-na-ustrojstvah-s-linux\/"},"modified":"2019-10-31T22:26:45","modified_gmt":"2019-10-31T19:26:45","slug":"uyazvimost-v-sudo-pozvolyaet-vypolnyat-komandy-s-pravami-superpolzovatelya-na-ustrojstvah-s-linux","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/uyazvimost-v-sudo-pozvolyaet-vypolnyat-komandy-s-pravami-superpolzovatelya-na-ustrojstvah-s-linux","title":{"rendered":"A Sudo-ban tal\u00e1lt sebezhet\u0151s\u00e9g lehet\u0151v\u00e9 teszi a parancsok v\u00e9grehajt\u00e1s\u00e1t rendszergazda jogokkal Linux alap\u00fa eszk\u00f6z\u00f6k\u00f6n.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Kider\u00fclt, hogy sebezhet\u0151s\u00e9get tal\u00e1ltak a Sudo (super user do) parancsban Linuxra. Ennek a sebezhet\u0151s\u00e9gnek a kihaszn\u00e1l\u00e1sa lehet\u0151v\u00e9 teszi, hogy a nem privilegiz\u00e1lt felhaszn\u00e1l\u00f3k vagy programok szuperfelhaszn\u00e1l\u00f3i jogosults\u00e1ggal hajtsanak v\u00e9gre parancsokat. Megjegyzik, hogy a sebezhet\u0151s\u00e9g olyan rendszereket \u00e9rint, amelyek nem szokv\u00e1nyos be\u00e1ll\u00edt\u00e1sokkal rendelkeznek, \u00e9s nem \u00e9rinti a legt\u00f6bb Linuxot futtat\u00f3 szervert.<\/p>\n

\"A<\/p>\n

A sebezhet\u0151s\u00e9g akkor jelentkezik, amikor a Sudo konfigur\u00e1ci\u00f3s be\u00e1ll\u00edt\u00e1sait haszn\u00e1lj\u00e1k, amelyek lehet\u0151v\u00e9 teszik, hogy m\u00e1s felhaszn\u00e1l\u00f3k nev\u00e9ben hajtsanak v\u00e9gre parancsokat. Ezenk\u00edv\u00fcl a Sudo-t k\u00fcl\u00f6nleges m\u00f3don is lehet konfigur\u00e1lni, \u00edgy lehet\u0151v\u00e9 v\u00e1lik, hogy m\u00e1s felhaszn\u00e1l\u00f3k, kiv\u00e9ve a szuperfelhaszn\u00e1l\u00f3t, parancsokat futtassanak. Ehhez a megfelel\u0151 m\u00f3dos\u00edt\u00e1sokat kell elv\u00e9gezni a konfigur\u00e1ci\u00f3s f\u00e1jlban.<\/p>\n

A probl\u00e9ma l\u00e9nyege, hogyan kezeli a Sudo a felhaszn\u00e1l\u00f3i azonos\u00edt\u00f3kat. Ha a parancssorba a -1 felhaszn\u00e1l\u00f3i azonos\u00edt\u00f3t vagy annak megfelel\u0151j\u00e9t, a 4294967295-\u00f6t \u00edrj\u00e1k be, akkor a v\u00e9grehajtott parancs szuperfelhaszn\u00e1l\u00f3i jogosults\u00e1ggal futhat. Mivel a megadott felhaszn\u00e1l\u00f3i azonos\u00edt\u00f3k nincsenek nyilv\u00e1ntartva a jelsz\u00f3 adatb\u00e1zisban, a parancs v\u00e9grehajt\u00e1s\u00e1hoz nem sz\u00fcks\u00e9ges a jelsz\u00f3 megad\u00e1sa.<\/p>\n

A sebezhet\u0151s\u00e9ggel kapcsolatos probl\u00e9m\u00e1k val\u00f3sz\u00edn\u0171s\u00e9g\u00e9nek cs\u00f6kkent\u00e9se \u00e9rdek\u00e9ben a felhaszn\u00e1l\u00f3knak aj\u00e1nlott min\u00e9l hamarabb friss\u00edteni a Sudo-t 1.8.28-as vagy \u00fajabb verzi\u00f3ra. A nyilatkozat szerint az \u00faj Sudo verzi\u00f3ban a -1 v\u00e1ltoz\u00f3 m\u00e1r nem haszn\u00e1lhat\u00f3 felhaszn\u00e1l\u00f3i azonos\u00edt\u00f3k\u00e9nt. Ez azt jelenti, hogy a t\u00e1mad\u00f3k nem tudj\u00e1k kihaszn\u00e1lni ezt a sebezhet\u0151s\u00e9get.  <\/p>\n

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Forr\u00e1s: 3dnews.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0421\u0442\u0430\u043b\u043e \u0438\u0437\u0432\u0435\u0441\u0442\u043d\u043e \u043e\u0431 \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0432 \u043a\u043e\u043c\u0430\u043d\u0434\u0435 Sudo (super user do) \u0434\u043b\u044f Linux. \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0434\u0430\u043d\u043d\u043e\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043d\u0435\u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u043c \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f\u043c \u0438\u043b\u0438 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0430\u043c \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u044f\u0442\u044c \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u043a\u043e\u043c\u0430\u043d\u0434 \u0441 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\u0432\u043e\u0437\u043d\u0438\u043a\u0430\u0435\u0442 \u0432 \u0441\u043b\u0443\u0447\u0430\u044f\u0445, \u043a\u043e\u0433\u0434\u0430 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442\u0441\u044f \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0438 \u043a\u043e\u043d\u0444\u0438\u0433\u0443\u0440\u0430\u0446\u0438\u0438 Sudo, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0435 \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0442\u044c […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":29198,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-38921","post","type-post","status-publish","format-standard","has-post-thumbnail","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\udd47 A Sudo sebezhet\u0151s\u00e9ge lehet\u0151v\u00e9 teszi, hogy szuperfelhaszn\u00e1l\u00f3i jogokkal rendelkez\u0151 parancsokat hajtsanak v\u00e9gre Linuxos eszk\u00f6z\u00f6k\u00f6n | ProHoster","description":"Kider\u00fclt, hogy sebezhet\u0151s\u00e9get tal\u00e1ltak a Sudo (super user do) parancsban 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