{"id":100585,"date":"2021-06-23T10:22:42","date_gmt":"2021-06-23T08:22:42","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/oshibka-v-bind-9-16-17-privodyashhaya-k-nevernoj-obrabotke-simvola-w-v-dns-zaprosah"},"modified":"2021-06-23T10:22:42","modified_gmt":"2021-06-23T08:22:42","slug":"oshibka-v-bind-9-16-17-privodyashhaya-k-nevernoj-obrabotke-simvola-w-v-dns-zaprosah","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hr\/blog\/news\/oshibka-v-bind-9-16-17-privodyashhaya-k-nevernoj-obrabotke-simvola-w-v-dns-zaprosah","title":{"rendered":"Gre\u0161ka u BIND 9.16.17 koja dovodi do pogre\u0161ne obrade znaka W u DNS upitima","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Objavljene su ispravke stabilne verzije DNS poslu\u017eitelja BIND 9.16.18 i jo\u0161 uvijek u razvoju eksperimentalne verzije 9.17.15, u kojima je ispravljena ozbiljna gre\u0161ka koja se pojavila u izdanjima BIND 9.16.17 i 9.17.14, objavljenim pro\u0161li tjedan (dan nakon tih izdanja, programeri su upozorili na postojanje problema i preporu\u010dili da se ne instaliraju verzije 9.16.17 i 9.17.14). <\/p>\n

U verzijama 9.16.17 i 9.17.14 u tablicama mapiranja znakova za mala i velika slova (maptoupper i maptolower) izostavljen je znak «w», \u0161to je dovelo do zamjene znakova «W» i «w» u imenima domena sekvencijom «\000» i vra\u0107anju neto\u010dnog rezultata prilikom obrade upita po maski. Na primjer, ako je u DNS zoni postojala evidencija «*.sub.test.local. 1 A 127.0.0.1″, upit za ime UVW.sub.test.local» davao je odgovor u kojem se vra\u0107alo ime «uv\\\/000.sub.test.local» umjesto «uvw.sub.test.local». <\/p>\n

Osim toga, uo\u010deni su problemi sa zamjenom znaka «w» s «\000» prilikom dinami\u010dkog a\u017euriranja zone ako se kontekst znakova «w» u upitu razlikovao od konteksta u DNS zoni. Na primjer, ako je u zoni bila evidencija «WW.example» a slalo se a\u017euriranje za «foo.ww.example.», obra\u0111eno je kao «foo.\000\000.example.». Problemi sa zamjenom znakova tako\u0111er su mogli nastati prilikom izvr\u0161avanja operacija prijenosa zona s primarnog na sekundarni DNS poslu\u017eitelj. <\/p>\n

Objavljivanje a\u017euriranja 9.16.18 odgo\u0111eno je zbog otkrivanja jo\u0161 dvije gre\u0161ke koje nisu ispravljene u verzijama 9.16.18 i 9.17.15. Gre\u0161ke uzrokuju me\u0111usobno blokiranje tijekom inicijalizacije i pojavljuju se u konfiguracijama u kojima se u dnssec-policy koriste iste zone prisutne u razli\u010ditim prikazima (view). Korisnicima s takvim postavkama preporu\u010duje se povratak na verziju BIND 9.16.16.
\n
Izvor: 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\u043e\u0439 \u0432\u0435\u0442\u043a\u0438 DNS-\u0441\u0435\u0440\u0432\u0435\u0440\u0430 BIND 9.16.18 \u0438 \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 9.17.15, \u0432 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0441\u0435\u0440\u044c\u0451\u0437\u043d\u0430\u044f \u043e\u0448\u0438\u0431\u043a\u0430, \u043f\u043e\u044f\u0432\u0438\u0432\u0448\u0430\u044f\u0441\u044f \u0432 \u0432\u044b\u043f\u0443\u0441\u043a\u0430\u0445 BIND 9.16.17 \u0438 9.17.14, \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u043d\u0430 \u043f\u0440\u043e\u0448\u043b\u043e\u0439 \u043d\u0435\u0434\u0435\u043b\u0435 (\u043d\u0430 \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0438\u0439 \u0434\u0435\u043d\u044c \u043f\u043e\u0441\u043b\u0435 \u0434\u0430\u043d\u043d\u044b\u0445 \u0440\u0435\u043b\u0438\u0437\u043e\u0432 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u043f\u0440\u0435\u0434\u0443\u043f\u0440\u0435\u0434\u0438\u043b\u0438 \u043e \u043d\u0430\u043b\u0438\u0447\u0438\u0438 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u044b \u0438 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u043e\u0432\u0430\u043b\u0438 \u043d\u0435 \u0443\u0441\u0442\u0430\u043d\u0430\u0432\u043b\u0438\u0432\u0430\u0442\u044c \u0432\u0435\u0440\u0441\u0438\u0438 9.16.17 \u0438 9.17.14). \u0412 \u0432\u0435\u0440\u0441\u0438\u044f\u0445 9.16.17 \u0438 9.17.14 […]<\/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-100585","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\udd47Gre\u0161ka u BIND 9.16.17, koja dovodi do neto\u010dne obrade znaka W u DNS upitima | ProHoster","description":"Objavljene su ispravke stabilne verzije DNS poslu\u017eitelja BIND 9.16.18 i jo\u0161 uvijek u razvoju eksperimentalne verzije 9.17.15, u kojima je ispravljena ozbiljna gre\u0161ka koja se pojavila u izdanjima BIND 9.16.17 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