{"id":113276,"date":"2024-01-31T13:41:06","date_gmt":"2024-01-31T11:41:10","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/sboj-v-domennoj-zone-ru-iz-za-oshibki-pri-zamene-klyuchej-dnssec"},"modified":"2024-01-31T13:41:06","modified_gmt":"2024-01-31T11:41:10","slug":"sboj-v-domennoj-zone-ru-iz-za-oshibki-pri-zamene-klyuchej-dnssec","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/sboj-v-domennoj-zone-ru-iz-za-oshibki-pri-zamene-klyuchej-dnssec","title":{"rendered":"Nedbrud i dom\u00e6nezone RU p\u00e5 grund af fejl ved udskiftning af n\u00f8gler DNSSEC","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Den 30. januar kl. 18:20 (MSK) oplevede brugerne en massiv fejl i hostidentifikationen i dom\u00e6nezone RU, for\u00e5rsaget af en fejl under skiftet af n\u00f8gler, der blev brugt til at validere zonen RU via DNSSEC. Som resultat af h\u00e6ndelsen kunne alle dom\u00e6ner i zone \u00ab.ru\u00bb ikke identificeres p\u00e5 DNS-serverne, der brugte DNSSEC til at validere data. Problemet ber\u00f8rte kun brugere, der anvendte DNS-resolvere fra udbydere eller offentlige DNS-tjenester som 8.8.8.8, der validerede foresp\u00f8rgsler ved hj\u00e6lp af DNSSEC. Brugere af DNS-resolvere, hvor DNSSEC var deaktiveret, blev ikke ramt. <\/p>\n

Det, der skete, minder om den h\u00e6ndelse sidste \u00e5r med registratoren InternetNZ, der er ansvarlig for dom\u00e6nezone \u00ab.NZ\u00bb, hvilket f\u00f8rte til nedbrud i opl\u00f8sningen domenenavne<\/a> i zone \u00ab.nz\u00bb p\u00e5 grund af en fejl ved rotation af KSK-n\u00f8glerne (Key Signing Key), der blev anvendt til digital signatur af DNSKEY-poster, der indeholdt n\u00f8gler til signatur af dom\u00e6nezone (ZSK, Zone Signing Key). I tilf\u00e6ldet med InternetNZ var fejlen relateret til \u00e6ndringen af n\u00f8glestrukturen ved overgangen til et nyt informationssystem for registratoren. \u00c5rsagerne til h\u00e6ndelsen i zone RU er endnu ikke detaljeret \u2013 Koordineringscentret for dom\u00e6ner RU har blot bekr\u00e6ftet ganske overordnet, at problemet er relateret til omkonfigurering af DNSSEC. <\/p>\n

At d\u00f8mme efter de eksterne manifestationer skete fejlen som f\u00f8lge af et fors\u00f8g p\u00e5 at \u00e6ndre den n\u00f8gle, der blev brugt til at validere zone RU. Denne n\u00f8gle er roden af tillid for de \u00f8vrige n\u00f8gler, der anvendes i anden niveau dom\u00e6ner, og bruger i sin tur n\u00f8gle for dom\u00e6net \u00ab.\u00bb som overordnet for at bekr\u00e6fte sin tillid. Den 26. januar blev der i indstillingerne for DNSEC i zone RU tilf\u00f8jet en ekstra n\u00f8gle med identifikationsnummer 52263 ud over hovedn\u00f8glen med identifikationsnummer 44301.

\"Nedbrud\"Nedbrud<\/center> <\/p>\n

I g\u00e5r omkring kl. 18:20 blev den nye n\u00f8gle aktiveret til verifikation af poster i omr\u00e5det RU, men efter overgangen til den nye n\u00f8gle kunne autentifikationen ikke l\u00e6ngere passere p\u00e5 grund af en fejl.

\"Nedbrud<\/center> <\/p>\n

Signaturen med den gamle n\u00f8gle blev genoprettet omkring kl. 21 (MSK), og det f\u00f8rste korrekte svar blev registreret af tjenesten dnsviz.net kl. 22:07 (MSK). Fejlindstillingerne var til stede i cirka to og en halv time, men p\u00e5 grund af indholdet af fejlagtige poster i DNS-servernes cache kr\u00e6ves der ekstra tid for en fuld gendannelse, medmindre cachen p\u00e5 de rekursive DNS-servere tvinges til at blive renset. Nogle udbydere l\u00f8ste problemet mere hurtigt og radikalt ved midlertidigt at deaktivere bekr\u00e6ftelse gennem DNSSEC i deres resolverindstillinger.

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

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