{"id":104087,"date":"2022-05-19T03:36:51","date_gmt":"2022-05-19T01:36:51","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/obnovlenie-dns-servera-bind-c-ustraneniem-uyazvimosti-v-realizaczii-dns-over-https"},"modified":"2022-05-19T03:36:51","modified_gmt":"2022-05-19T01:36:51","slug":"obnovlenie-dns-servera-bind-c-ustraneniem-uyazvimosti-v-realizaczii-dns-over-https","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/obnovlenie-dns-servera-bind-c-ustraneniem-uyazvimosti-v-realizaczii-dns-over-https","title":{"rendered":"Atualiza\u00e7\u00e3o do servidor DNS BIND para corrigir vulnerabilidade na implementa\u00e7\u00e3o do DNS-over-HTTPS","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Foram publicadas atualiza\u00e7\u00f5es corretivas para os ramos est\u00e1veis do servidor DNS BIND 9.16.28 e 9.18.3, bem como uma nova vers\u00e3o do ramo experimental 9.19.1. Nas vers\u00f5es 9.18.3 e 9.19.1, foi corrigida uma vulnerabilidade (CVE-2022-1183) na implementa\u00e7\u00e3o do mecanismo DNS-over-HTTPS, suportado desde o ramo 9.18. A vulnerabilidade leva \u00e0 interrup\u00e7\u00e3o do processo named caso a conex\u00e3o TLS com o manipulador baseado em HTTP seja encerrada prematuramente. O problema afeta apenas servidores<\/a>, servidores que atendem a solicita\u00e7\u00f5es DNS over HTTPS (DoH). Servidores que aceitam solicita\u00e7\u00f5es por DNS over TLS (DoT) e n\u00e3o utilizam DoH n\u00e3o est\u00e3o sujeitos ao problema. <\/p>\n

A vers\u00e3o 9.18.3 tamb\u00e9m incluiu v\u00e1rias melhorias funcionais. Foi adicionada a compatibilidade com a segunda vers\u00e3o do cat\u00e1logo de zonas (\"Catalog Zones\"), definida no quinto rascunho da especifica\u00e7\u00e3o IETF. O cat\u00e1logo de zonas oferece um novo m\u00e9todo de manuten\u00e7\u00e3o de servidores DNS secund\u00e1rios, onde, em vez de definir registros individuais para cada zona secund\u00e1ria no servidor secund\u00e1rio, \u00e9 organizada uma transfer\u00eancia de um determinado conjunto de zonas secund\u00e1rias entre os servidores prim\u00e1rio e secund\u00e1rio. Ou seja, ao configurar a transfer\u00eancia do cat\u00e1logo de forma semelhante \u00e0 transfer\u00eancia de zonas individuais, as zonas criadas no servidor prim\u00e1rio, marcadas como pertencentes ao cat\u00e1logo, ser\u00e3o automaticamente criadas no servidor secund\u00e1rio sem a necessidade de editar arquivos de configura\u00e7\u00e3o. <\/p>\n

A nova vers\u00e3o tamb\u00e9m adiciona suporte a c\u00f3digos de erro avan\u00e7ados \"Stale Answer\" e \"Stale NXDOMAIN Answer\", emitidos quando uma resposta obsoleta \u00e9 retornada do cache. O named e o dig incluem a capacidade de verificar externas certificados TLS<\/a>, que pode ser utilizada para implementar autentica\u00e7\u00e3o estrita ou colaborativa baseada em TLS (RFC 9103).
\n
Fonte: 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 9.16.28 \u0438 9.18.3, \u0430 \u0442\u0430\u043a\u0436\u0435 \u043d\u043e\u0432\u044b\u0439 \u0432\u044b\u043f\u0443\u0441\u043a \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430\u043b\u044c\u043d\u043e\u0439 \u0432\u0435\u0442\u043a\u0438 9.19.1. \u0412 \u0432\u0435\u0440\u0441\u0438\u044f\u0445 9.18.3 \u0438 9.19.1 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2022-1183) \u0432 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c\u0430 DNS-over-HTTPS, \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u043c\u043e\u0433\u043e \u043d\u0430\u0447\u0438\u043d\u0430\u044f \u0441 \u0432\u0435\u0442\u043a\u0438 9.18. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u0440\u0438\u0432\u043e\u0434\u0438\u0442 \u043a \u0430\u0432\u0430\u0440\u0438\u0439\u043d\u043e\u043c\u0443 \u0437\u0430\u0432\u0435\u0440\u0448\u0435\u043d\u0438\u044e \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0430 named \u0432 \u0441\u043b\u0443\u0447\u0430\u0435, \u0435\u0441\u043b\u0438 TLS-\u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 \u043a \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0443 \u043d\u0430 \u0431\u0430\u0437\u0435 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 HTTP \u0431\u0443\u0434\u0435\u0442 \u0434\u043e\u0441\u0440\u043e\u0447\u043d\u043e \u043e\u0431\u043e\u0440\u0432\u0430\u043d\u043e. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 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