{"id":77154,"date":"2020-04-08T07:41:59","date_gmt":"2020-04-08T05:41:59","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/microsoft-predlozhil-modul-yadra-linux-dlya-proverki-czelostnosti-sistemy"},"modified":"2020-04-08T07:41:59","modified_gmt":"2020-04-08T05:41:59","slug":"microsoft-predlozhil-modul-yadra-linux-dlya-proverki-czelostnosti-sistemy","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/microsoft-predlozhil-modul-yadra-linux-dlya-proverki-czelostnosti-sistemy","title":{"rendered":"A Microsoft bemutatta a Linux kernel integrit\u00e1s-ellen\u0151rz\u0151 modulj\u00e1t","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

A Microsoft fejleszt\u0151i bemutatt\u00e1k<\/a><\/noindex> integrit\u00e1s-ellen\u0151rz\u00e9si mechanizmus IPE<\/a><\/noindex> (Integrit\u00e1s Politika V\u00e9grehajt\u00e1sa), amely egy LSM-modulk\u00e9nt (Linux Biztons\u00e1gi Modul) val\u00f3sult meg a Linux kernel sz\u00e1m\u00e1ra. A modul lehet\u0151v\u00e9 teszi az integrit\u00e1s biztos\u00edt\u00e1s\u00e1hoz sz\u00fcks\u00e9ges \u00e1ltal\u00e1nos politik\u00e1k meghat\u00e1roz\u00e1s\u00e1t a rendszer szintj\u00e9n, amely megadja, hogy mely m\u0171veletek enged\u00e9lyezettek \u00e9s milyen m\u00f3don sz\u00fcks\u00e9ges ellen\u0151rizni a komponensek hiteless\u00e9g\u00e9t. Az IPE seg\u00edts\u00e9g\u00e9vel megadhat\u00f3, hogy mely futtathat\u00f3 \u00e1llom\u00e1nyok ind\u00edt\u00e1s\u00e1t enged\u00e9lyezz\u00fck, \u00e9s biztos\u00edthat\u00f3, hogy ezek az \u00e1llom\u00e1nyok megegyeznek a megb\u00edzhat\u00f3 forr\u00e1st\u00f3l kapott verzi\u00f3val. K\u00f3d nyitva \u00e1ll<\/a><\/noindex> MIT licenc alatt \u00e1ll.<\/p>\n

Az IPE c\u00e9lja egy teljes m\u00e9rt\u00e9kben ellen\u0151rizhet\u0151 rendszerek l\u00e9trehoz\u00e1sa, amelyek integrit\u00e1s\u00e1t a kezdeti bet\u00f6lt\u0151t\u0151l \u00e9s kernelt\u0151l kezdve eg\u00e9szen az utols\u00f3 futtathat\u00f3 \u00e1llom\u00e1nyig, konfigur\u00e1ci\u00f3ig \u00e9s bet\u00f6lt\u00f6tt \u00e1llom\u00e1nyokig meger\u0151s\u00edtik. F\u00e1jl m\u00f3dos\u00edt\u00e1sa vagy helyettes\u00edt\u00e9se eset\u00e9n az IPE blokkolhatja a m\u0171veletet vagy napl\u00f3zhatja az integrit\u00e1s megs\u00e9rt\u00e9s\u00e9t. A javasolt mechanizmus alkalmazhat\u00f3 be\u00e1gyazott eszk\u00f6z\u00f6k firmware-\u00e9ben, ahol minden szoftver \u00e9s be\u00e1ll\u00edt\u00e1s k\u00fcl\u00f6n \u00f6ssze\u00e1ll\u00edtva \u00e9s a tulajdonos \u00e1ltal biztos\u00edtva van, p\u00e9ld\u00e1ul a Microsoft adatk\u00f6zpontjaiban az IPE t\u0171zfalak eszk\u00f6zeiben alkalmazz\u00e1k.<\/p>\n

M\u00e1s integrit\u00e1s-ellen\u0151rz\u0151 rendszerekt\u0151l, mint p\u00e9ld\u00e1ul IMA<\/a><\/noindex>, Az IPE f\u00fcggetlen a f\u00e1jlrendszer metaadatait\u00f3l \u2014 minden, a m\u0171veletek enged\u00e9lyez\u00e9s\u00e9t meghat\u00e1roz\u00f3 tulajdons\u00e1g k\u00f6zvetlen\u00fcl a kernelben t\u00e1rol\u00f3dik. A f\u00e1jlok tartalm\u00e1nak integrit\u00e1s\u00e1nak ellen\u0151rz\u00e9s\u00e9hez a m\u00e1r megl\u00e9v\u0151 kernel mechanizmusok kriptogr\u00e1fiai hash-okat haszn\u00e1lnak.
\ndm-verity<\/a><\/noindex> vagy fs-verity<\/a><\/noindex>.
\nHasonl\u00f3an a SELinuxhoz, itt is k\u00e9t m\u0171k\u00f6d\u00e9si m\u00f3dot t\u00e1mogatunk: 'permissive' \u00e9s 'enforce'. Az els\u0151 m\u00f3dban csak a probl\u00e9m\u00e1k napl\u00f3z\u00e1sa t\u00f6rt\u00e9nik a vizsg\u00e1latok v\u00e9grehajt\u00e1sakor, ami p\u00e9ld\u00e1ul a k\u00f6rnyezet el\u0151zetes tesztel\u00e9s\u00e9re haszn\u00e1lhat\u00f3.<\/p>\n

<\/a><\/noindex><\/p>\n

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

\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u0438\u0437 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Microsoft \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b\u0438 \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u0446\u0435\u043b\u043e\u0441\u0442\u043d\u043e\u0441\u0442\u0438 IPE (Integrity Policy Enforcement), \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u0432 \u0432\u0438\u0434\u0435 LSM-\u043c\u043e\u0434\u0443\u043b\u044f (Linux Security Module) \u0434\u043b\u044f \u044f\u0434\u0440\u0430 Linux. \u041c\u043e\u0434\u0443\u043b\u044c \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u044c \u043e\u0431\u0449\u0443\u044e \u043f\u043e\u043b\u0438\u0442\u0438\u043a\u0443 \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f 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\u0440\u0430\u0437\u0440\u0435\u0448\u0435\u043d\u043e \u0437\u0430\u043f\u0443\u0441\u043a\u0430\u0442\u044c \u0438 \u0433\u0430\u0440\u0430\u043d\u0442\u0438\u0440\u043e\u0432\u0430\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-77154","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 Microsoft Linux kernel modult javasolt a rendszer integrit\u00e1s\u00e1nak ellen\u0151rz\u00e9s\u00e9re | ProHoster","description":"A Microsoft fejleszt\u0151i bemutatt\u00e1k az integrit\u00e1s-ellen\u0151rz\u00e9si 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