{"id":101168,"date":"2021-09-02T10:23:16","date_gmt":"2021-09-02T08:23:16","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/github-vvodit-novye-trebovaniya-dlya-udalyonnogo-podklyucheniya-k-git"},"modified":"2021-09-02T10:23:16","modified_gmt":"2021-09-02T08:23:16","slug":"github-vvodit-novye-trebovaniya-dlya-udalyonnogo-podklyucheniya-k-git","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/github-vvodit-novye-trebovaniya-dlya-udalyonnogo-podklyucheniya-k-git","title":{"rendered":"O GitHub introduz novos requisitos para conex\u00f5es remotas com o Git","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>O GitHub anunciou altera\u00e7\u00f5es no servi\u00e7o relacionadas ao fortalecimento da prote\u00e7\u00e3o do protocolo Git, utilizado durante as opera\u00e7\u00f5es de git push e git pull via SSH ou no esquema &#171;git:\/\/&#187; (acessos via https:\/\/ n\u00e3o ser\u00e3o afetados). Ap\u00f3s a implementa\u00e7\u00e3o dessas altera\u00e7\u00f5es, ser\u00e1 necess\u00e1rio ter pelo menos o OpenSSH vers\u00e3o 7.2 (lan\u00e7ado em 2016) ou o PuTTY vers\u00e3o 0.75 (lan\u00e7ado em maio deste ano) para conectar-se ao GitHub via SSH. Por exemplo, a compatibilidade com o cliente SSH inclu\u00eddo no CentOS 6 e no Ubuntu 14.04 ser\u00e1 interrompida, uma vez que o suporte a essas vers\u00f5es j\u00e1 foi descontinuado.         <\/p>\n<p>As altera\u00e7\u00f5es consistem no fim do suporte a conex\u00f5es n\u00e3o criptografadas ao Git (atrav\u00e9s de &#171;git:\/\/&#187;) e no endurecimento dos requisitos para as chaves SSH usadas ao acessar o GitHub. GitHub deixar\u00e1 de apoiar todas as chaves DSA e algoritmos SSH obsoletos, como os cifrados CBC (aes256-cbc, aes192-cbc, aes128-cbc) e o HMAC-SHA-1. Al\u00e9m disso, novos requisitos para as chaves RSA ser\u00e3o introduzidos (o uso do SHA-1 ser\u00e1 proibido) e o suporte a chaves de host ECDSA e Ed25519 ser\u00e1 implementado.         <\/p>\n<p>As mudan\u00e7as ser\u00e3o implementadas gradualmente. Em 14 de setembro, novas chaves de host ECDSA e Ed25519 ser\u00e3o geradas. Em 2 de novembro, o suporte a novas chaves RSA baseadas em SHA-1 ser\u00e1 interrompido (chaves previamente geradas continuar\u00e3o funcionando). Em 16 de novembro, o suporte a chaves de host baseadas no algoritmo DSA ser\u00e1 finalizado. Em 11 de janeiro de 2022, como um experimento, o suporte a antigos algoritmos SSH e a possibilidade de conex\u00f5es sem criptografia ser\u00e1 temporariamente suspenso. Em 15 de mar\u00e7o, o suporte aos antigos algoritmos ser\u00e1 totalmente encerrado.      <\/p>\n<p>Adicionalmente, vale ressaltar que foi introduzida no c\u00f3digo do OpenSSH uma mudan\u00e7a que, por padr\u00e3o, desativa o suporte a chaves RSA baseadas no hash SHA-1 (&#171;ssh-rsa&#187;). O suporte a chaves RSA com hashes SHA-256 e SHA-512 (rsa-sha2-256\/512) permanece inalterado. O fim do suporte \u00e0s chaves &#171;ssh-rsa&#187; \u00e9 devido ao aumento da efic\u00e1cia de ataques de colis\u00e3o com prefixo fixo (o custo de encontrar uma colis\u00e3o \u00e9 estimado em cerca de 50 mil d\u00f3lares). Para verificar o uso de ssh-rsa em seus sistemas, voc\u00ea pode tentar se conectar via ssh com a op\u00e7\u00e3o &#171;-oHostKeyAlgorithms=-ssh-rsa&#187;.<br \/>\n<br \/>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=55721\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>GitHub \u0430\u043d\u043e\u043d\u0441\u0438\u0440\u043e\u0432\u0430\u043b \u0432\u043d\u0435\u0441\u0435\u043d\u0438\u0435 \u0432 \u0441\u0435\u0440\u0432\u0438\u0441 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439, \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u0445 \u0441 \u0443\u0441\u0438\u043b\u0435\u043d\u0438\u0435\u043c \u0437\u0430\u0449\u0438\u0442\u044b \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 Git, \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u0433\u043e \u0432 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0435 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0439 git push \u0438 git pull \u0447\u0435\u0440\u0435\u0437 SSH \u0438\u043b\u0438 \u0441\u0445\u0435\u043c\u0443 &#171;git:\/\/&#187; (\u043e\u0431\u0440\u0430\u0449\u0435\u043d\u0438\u044f \u0447\u0435\u0440\u0435\u0437 https:\/\/ \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u043d\u0435 \u043a\u043e\u0441\u043d\u0443\u0442\u0441\u044f). \u041f\u043e\u0441\u043b\u0435 \u043d\u0430\u0447\u0430\u043b\u0430 \u0434\u0435\u0439\u0441\u0442\u0432\u0438\u044f \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439 \u0434\u043b\u044f \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u043a GitHub \u043f\u043e SSH \u043f\u043e\u0442\u0440\u0435\u0431\u0443\u0435\u0442\u0441\u044f \u043a\u0430\u043a \u043c\u0438\u043d\u0438\u043c\u0443\u043c OpenSSH \u0432\u0435\u0440\u0441\u0438\u0438 7.2 (\u0432\u044b\u043f\u0443\u0449\u0435\u043d \u0432 2016 \u0433\u043e\u0434\u0443) \u0438\u043b\u0438 PuTTY [&hellip;]<\/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-101168","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"GitHub \u0430\u043d\u043e\u043d\u0441\u0438\u0440\u043e\u0432\u0430\u043b \u0432\u043d\u0435\u0441\u0435\u043d\u0438\u0435 \u0432 \u0441\u0435\u0440\u0432\u0438\u0441 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439, \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u0445 \u0441 \u0443\u0441\u0438\u043b\u0435\u043d\u0438\u0435\u043c \u0437\u0430\u0449\u0438\u0442\u044b \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 Git, \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u0433\u043e \u0432 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0435 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0439 git push \u0438 git pull \u0447\u0435\u0440\u0435\u0437 SSH \u0438\u043b\u0438 \u0441\u0445\u0435\u043c\u0443 &quot;git:\/\/&quot; 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