{"id":78381,"date":"2020-04-19T07:42:02","date_gmt":"2020-04-19T05:42:02","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/obnovlenie-dns-servera-bind-9-11-18-9-16-2-i-9-17-1"},"modified":"2020-04-19T07:42:02","modified_gmt":"2020-04-19T05:42:02","slug":"obnovlenie-dns-servera-bind-9-11-18-9-16-2-i-9-17-1","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/obnovlenie-dns-servera-bind-9-11-18-9-16-2-i-9-17-1","title":{"rendered":"A BIND DNS-szerver friss\u00edt\u00e9se: 9.11.18, 9.16.2 \u00e9s 9.17.1","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Megjelentek<\/a><\/noindex> A stabil DNS-szerver BIND 9.11.18 \u00e9s 9.16.2 verzi\u00f3inak jav\u00edt\u00f3friss\u00edt\u00e9sei, valamint a fejleszt\u00e9s alatt \u00e1ll\u00f3 k\u00eds\u00e9rleti 9.17.1-es \u00e1gba tartoz\u00f3 \u00faj kiad\u00e1sok. eliminates<\/a><\/noindex> a biztons\u00e1gi probl\u00e9ma, amely a v\u00e9delem hat\u00e9konys\u00e1g\u00e1nak hi\u00e1ny\u00e1val f\u00fcgg \u00f6ssze az « t\u00e1mad\u00e1sokkal »DNS rebinding<\/a><\/noindex>a DNS-k\u00e9r\u00e9sek tov\u00e1bb\u00edt\u00f3 \u00fczemm\u00f3dban m\u0171k\u00f6d\u0151 szerverek (a «forwarders» szakasz a be\u00e1ll\u00edt\u00e1sokban). Ezen k\u00edv\u00fcl a DNSSEC digit\u00e1lis al\u00e1\u00edr\u00e1sok t\u00e1rolt statisztik\u00e1j\u00e1nak m\u00e9ret\u00e9nek cs\u00f6kkent\u00e9s\u00e9n is dolgoztunk - a figyelemmel k\u00eds\u00e9rt kulcsok sz\u00e1ma 4-re cs\u00f6kkent z\u00f3n\u00e1nk\u00e9nt, ami a legt\u00f6bb esetben elegend\u0151.<\/p>\n

A «DNS rebinding» technika lehet\u0151v\u00e9 teszi, hogy ha a felhaszn\u00e1l\u00f3 megnyit egy adott oldalt a b\u00f6ng\u00e9sz\u0151j\u00e9ben, WebSocket kapcsolatot l\u00e9tes\u00edtsen egy bels\u0151 h\u00e1l\u00f3zaton l\u00e9v\u0151 szolg\u00e1ltat\u00e1ssal, amely k\u00f6zvetlen internetes el\u00e9r\u00e9s n\u00e9lk\u00fcl van. A b\u00f6ng\u00e9sz\u0151kben alkalmazott domain hat\u00e1rok t\u00fall\u00e9p\u00e9s\u00e9t (cross-origin) megker\u00fclve a DNS hostn\u00e9v v\u00e1lt\u00e1st alkalmaz. A t\u00e1mad\u00f3 DNS-szerver\u00e9n k\u00e9t IP-c\u00edm v\u00e1ltakoz\u00f3 visszaad\u00e1s\u00e1t \u00e1ll\u00edtj\u00e1k be: az els\u0151 k\u00e9r\u00e9sre a szerver val\u00f3s IP-c\u00edm\u00e9t adja vissza az oldalhoz, m\u00edg a tov\u00e1bbi k\u00e9rd\u00e9sekre a k\u00e9sz\u00fcl\u00e9k bels\u0151 c\u00edm\u00e9t (pl. 192.168.10.1) k\u00fcldi.<\/p>\n

Az els\u0151 v\u00e1lasz id\u0151korl\u00e1tj\u00e1t (TTL) a lehet\u0151 legalacsonyabb \u00e9rt\u00e9kre \u00e1ll\u00edtj\u00e1k be, \u00edgy amikor a b\u00f6ng\u00e9sz\u0151 megnyitja az oldalt, az meghat\u00e1rozza a t\u00e1mad\u00f3 val\u00f3di IP-c\u00edm\u00e9t, \u00e9s bet\u00f6lti az oldal tartalm\u00e1t. Az oldalon elindul egy JavaScript-k\u00f3d, amely v\u00e1rja a TTL letelt\u00e9t \u00e9s m\u00e1sodik k\u00e9r\u00e9st k\u00fcld, amely most a hosztot 192.168.10.1-re \u00e1ll\u00edtja. Ez lehet\u0151v\u00e9 teszi, hogy a JavaScript k\u00f6zvetlen kapcsolatot l\u00e9tes\u00edtsen a helyi h\u00e1l\u00f3zatban l\u00e9v\u0151 szolg\u00e1ltat\u00e1ssal, megker\u00fclve a cross-origin korl\u00e1toz\u00e1st. V\u00e9delem<\/a><\/noindex> A BIND-ot \u00e9rint\u0151 ilyen t\u00e1mad\u00e1sokt\u00f3l val\u00f3 v\u00e9delem a k\u00fcls\u0151 szerverek \u00e1ltal a jelenlegi bels\u0151 h\u00e1l\u00f3zat IP-c\u00edmeinek vagy a helyi domainek CNAME-ali\u00e1sainak visszaad\u00e1s\u00e1nak blokkol\u00e1s\u00e1n alapul a deny-answer-addresses \u00e9s deny-answer-aliases be\u00e1ll\u00edt\u00e1sok seg\u00edts\u00e9g\u00e9vel.<\/p>\n

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

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

\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u044b \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u0441\u0442\u0430\u0431\u0438\u043b\u044c\u043d\u044b\u0445 \u0432\u0435\u0442\u043e\u043a DNS-\u0441\u0435\u0440\u0432\u0435\u0440\u0430 BIND 9.11.18 \u0438 9.16.2, \u0430 \u0442\u0430\u043a\u0436\u0435 \u043d\u0430\u0445\u043e\u0434\u044f\u0449\u0435\u0439\u0441\u044f \u0432 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430\u043b\u044c\u043d\u043e\u0439 \u0432\u0435\u0442\u043a\u0438 9.17.1. \u0412 \u043d\u043e\u0432\u044b\u0445 \u0432\u044b\u043f\u0443\u0441\u043a\u0430\u0445 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438, \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u0430\u044f \u0441 \u043d\u0435\u044d\u0444\u0444\u0435\u043a\u0442\u0438\u0432\u043d\u043e\u0441\u0442\u044c\u044e \u0437\u0430\u0449\u0438\u0442\u044b \u043e\u0442 \u0430\u0442\u0430\u043a «DNS rebinding» \u043f\u0440\u0438 \u0440\u0430\u0431\u043e\u0442\u0435 \u0432 \u0440\u0435\u0436\u0438\u043c\u0435 \u043f\u0435\u0440\u0435\u043d\u0430\u043f\u0440\u0430\u0432\u043b\u044f\u044e\u0449\u0435\u0433\u043e \u0437\u0430\u043f\u0440\u043e\u0441\u044b DNS-\u0441\u0435\u0440\u0432\u0435\u0440\u0430 (\u0431\u043b\u043e\u043a «forwarders» \u0432 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0430\u0445). \u041a\u0440\u043e\u043c\u0435 \u0442\u043e\u0433\u043e, \u043f\u0440\u043e\u0432\u0435\u0434\u0435\u043d\u0430 \u0440\u0430\u0431\u043e\u0442\u0430 \u043f\u043e \u0441\u043e\u043a\u0440\u0430\u0449\u0435\u043d\u0438\u044e \u0440\u0430\u0437\u043c\u0435\u0440\u0430 \u0445\u0440\u0430\u043d\u044f\u0449\u0435\u0439\u0441\u044f \u0432 \u043f\u0430\u043c\u044f\u0442\u0438 \u0441\u0442\u0430\u0442\u0438\u0441\u0442\u0438\u043a\u0438 \u0446\u0438\u0444\u0440\u043e\u0432\u044b\u0445 […]<\/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-78381","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\udd47DNS-szerver BIND 9.11.18, 9.16.2 \u00e9s 9.17.1 friss\u00edt\u00e9se | ProHoster","description":"Jav\u00edt\u00f3friss\u00edt\u00e9sek jelentek meg a stabil DNS-szerver BIND 9.11.18 \u00e9s 9.16.2 verzi\u00f3ihoz, 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