Les administrateurs de serveurs de messagerie bas\u00e9s sur Fedora Linux ont remarqu\u00e9 des probl\u00e8mes avec le client de messagerie Microsoft Outlook apr\u00e8s une mise \u00e0 jour de la distribution. Le diagnostic du probl\u00e8me a r\u00e9v\u00e9l\u00e9 que, dans la nouvelle version du paquet IMAP\/POP3 Dovecot 2.4.3, l'authentification selon les protocoles IMAP et POP3 \u00e9tait interdite par d\u00e9faut, emp\u00eachant la transmission des mots de passe en clair lors des sessions sans chiffrement. <\/p>\n
Les utilisateurs d'Outlook avaient activ\u00e9 l'option pour se connecter au serveur de messagerie en utilisant le chiffrement, mais le client de messagerie continuait \u00e0 utiliser le port 110 pour POP3, au lieu de changer le num\u00e9ro de port en 995, qui est utilis\u00e9 pour les sessions TLS avec le serveur POP3. De plus, il ne faisait pas usage de l'extension STARTTLS pour passer \u00e0 une session TLS. Certaines anciennes configurations d'Outlook ignoraient le drapeau d'activation du chiffrement TLS en cas d'utilisation explicite du port 110, et envoyaient imm\u00e9diatement les commandes USER et PASS en texte clair sans avertissement. La version la plus ancienne de Microsoft Outlook o\u00f9 le probl\u00e8me a \u00e9t\u00e9 observ\u00e9 date de 2007. \u0410\u0434\u043c\u0438\u043d\u0438\u0441\u0442\u0440\u0430\u0442\u043e\u0440\u044b \u043f\u043e\u0447\u0442\u043e\u0432\u044b\u0445 \u0441\u0435\u0440\u0432\u0435\u0440\u043e\u0432 \u043d\u0430 \u0431\u0430\u0437\u0435 Fedora Linux \u043e\u0431\u0440\u0430\u0442\u0438\u043b\u0438 \u0432\u043d\u0438\u043c\u0430\u043d\u0438\u0435 \u043d\u0430 \u0432\u043e\u0437\u043d\u0438\u043a\u043d\u043e\u0432\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0431\u043b\u0435\u043c \u0441 \u0440\u0430\u0431\u043e\u0442\u043e\u0439 \u043f\u043e\u0447\u0442\u043e\u0432\u043e\u0433\u043e \u043a\u043b\u0438\u0435\u043d\u0442\u0430 Microsoft Outlook \u043f\u043e\u0441\u043b\u0435 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u0434\u0438\u0441\u0442\u0440\u0438\u0431\u0443\u0442\u0438\u0432\u0430. \u0414\u0438\u0430\u0433\u043d\u043e\u0441\u0442\u0438\u043a\u0430 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u044b \u043f\u043e\u043a\u0430\u0437\u0430\u043b\u0430, \u0447\u0442\u043e \u0432 \u043d\u043e\u0432\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438 \u043f\u0430\u043a\u0435\u0442\u0430 \u0441 IMAP\/POP3-\u0441\u0435\u0440\u0432\u0435\u0440\u043e\u043c Dovecot 2.4.3 \u0432 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0430\u0445 \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u0431\u044b\u043b\u0430 \u0437\u0430\u043f\u0440\u0435\u0449\u0435\u043d\u0430 \u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f \u043f\u043e \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430\u043c IMAP \u0438 POP3 \u0441 \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0435\u0439 \u043f\u0430\u0440\u043e\u043b\u044f \u0432 \u043e\u0442\u043a\u0440\u044b\u0442\u043e\u043c \u0432\u0438\u0434\u0435 \u0432 \u0441\u0435\u0430\u043d\u0441\u0430\u0445 \u0431\u0435\u0437 \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u044f […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-181896","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\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\udd47Fedora Linux a aid\u00e9 \u00e0 identifier un probl\u00e8me de s\u00e9curit\u00e9 dans le client de messagerie Outlook | ProHoster","description":"Les administrateurs de serveurs de messagerie bas\u00e9s sur Fedora Linux ont remarqu\u00e9 des probl\u00e8mes avec le client de messagerie Microsoft Outlook apr\u00e8s une mise \u00e0 jour de la 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ProHoster","og:description":"\u0410\u0434\u043c\u0438\u043d\u0438\u0441\u0442\u0440\u0430\u0442\u043e\u0440\u044b \u043f\u043e\u0447\u0442\u043e\u0432\u044b\u0445 \u0441\u0435\u0440\u0432\u0435\u0440\u043e\u0432 \u043d\u0430 \u0431\u0430\u0437\u0435 Fedora Linux \u043e\u0431\u0440\u0430\u0442\u0438\u043b\u0438 \u0432\u043d\u0438\u043c\u0430\u043d\u0438\u0435 \u043d\u0430 \u0432\u043e\u0437\u043d\u0438\u043a\u043d\u043e\u0432\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0431\u043b\u0435\u043c \u0441 \u0440\u0430\u0431\u043e\u0442\u043e\u0439 \u043f\u043e\u0447\u0442\u043e\u0432\u043e\u0433\u043e \u043a\u043b\u0438\u0435\u043d\u0442\u0430 Microsoft Outlook \u043f\u043e\u0441\u043b\u0435 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f 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Source : opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"