{"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\/pt\/blog\/news\/sboj-v-domennoj-zone-ru-iz-za-oshibki-pri-zamene-klyuchej-dnssec","title":{"rendered":"Falha na zona de dom\u00ednio RU devido a um erro na substitui\u00e7\u00e3o das chaves DNSSEC","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

No dia 30 de janeiro \u00e0s 18:20 (MSK), os usu\u00e1rios enfrentaram uma falha em massa na resolu\u00e7\u00e3o de hosts na zona de dom\u00ednio RU, causada por um erro na troca de chaves usadas para validar a autenticidade da zona RU atrav\u00e9s do DNSSEC. Como resultado do incidente, em servidores DNS que aplicam o DNSSEC para verificar a autenticidade dos dados, todos os dom\u00ednios na zona \u00ab.ru\u00bb deixaram de ser resolvidos. O problema afetou apenas os usu\u00e1rios que utilizam resolvedores DNS de provedores ou servi\u00e7os DNS p\u00fablicos, como 8.8.8.8, que verificam a autenticidade das consultas utilizando DNSSEC. Os usu\u00e1rios de resolvedores DNS nos quais o DNSSEC est\u00e1 desativado n\u00e3o foram prejudicados. <\/p>\n

O ocorrido \u00e9 semelhante ao incidente do ano passado com o registrador InternetNZ, respons\u00e1vel pela zona de dom\u00ednio \u00ab.NZ\u00bb, que resultou em falhas na resolu\u00e7\u00e3o dom\u00ednios<\/a> na zona \u00ab.nz\u00bb devido a um erro na rota\u00e7\u00e3o das chaves KSK (Key Signing Key), utilizadas para a assinatura digital de registros DNSKEY, que cont\u00eam chaves para assinar a zona de dom\u00ednio (ZSK, Zone Signing Key). No caso da InternetNZ, o erro estava relacionado \u00e0 mudan\u00e7a no formato das chaves ao migrar para um novo sistema de informa\u00e7\u00f5es do registrador. As causas do incidente na zona RU ainda n\u00e3o foram detalhadas \u2014 o Centro Coordenador de Dom\u00ednios RU apenas confirmou de forma geral que o problema est\u00e1 relacionado \u00e0 reconfigura\u00e7\u00e3o do DNSSEC. <\/p>\n

A julgar pelas manifesta\u00e7\u00f5es externas, a falha ocorreu em decorr\u00eancia de uma tentativa de troca da chave utilizada para verificar a zona RU. Esta chave \u00e9 a raiz de confian\u00e7a para as outras chaves aplicadas nos dom\u00ednios de segundo n\u00edvel e, por sua vez, utiliza a chave do dom\u00ednio \u00ab.\u00bb como superior para confirmar sua confian\u00e7a. No dia 26 de janeiro, nas configura\u00e7\u00f5es do DNSSEC da zona RU, al\u00e9m da chave principal com o identificador 44301, uma chave adicional 52263 foi adicionada.

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

Ontem, por volta das 18:20, uma nova chave foi ativada para verificar registros na zona RU, mas ap\u00f3s a transi\u00e7\u00e3o para a nova chave, a autentica\u00e7\u00e3o deixou de ser bem-sucedida devido a um erro.

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

A assinatura da chave antiga foi retornada por volta das 21 horas (MSK), enquanto a primeira resposta correta foi registrada pelo servi\u00e7o dnsviz.net \u00e0s 22:07 (MSK). As configura\u00e7\u00f5es com falha estiveram presentes por cerca de duas horas e meia, mas, devido \u00e0 perman\u00eancia de registros err\u00f4neos nos caches dos servidores DNS, \u00e9 necess\u00e1rio um tempo adicional para a recupera\u00e7\u00e3o completa, a menos que o cache nos servidores DNS recursivos seja limpo for\u00e7osamente. Alguns provedores resolveram o problema de forma mais r\u00e1pida e radical, desativando temporariamente a verifica\u00e7\u00e3o via DNSSEC nas configura\u00e7\u00f5es de seus resolvedores.

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

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