Los administradores de servidores de correo basados en Fedora Linux han observado problemas con el funcionamiento del cliente de correo Microsoft Outlook despu\u00e9s de la actualizaci\u00f3n de la distribuci\u00f3n. El diagn\u00f3stico del problema mostr\u00f3 que en la nueva versi\u00f3n del paquete con el servidor IMAP\/POP3 Dovecot 2.4.3 la autenticaci\u00f3n mediante los protocolos IMAP y POP3 estaba deshabilitada por defecto, lo que permit\u00eda la transmisi\u00f3n de la contrase\u00f1a en texto claro en sesiones sin cifrado. <\/p>\n
Los usuarios de Outlook ten\u00edan habilitada la opci\u00f3n para conectarse al servidor de correo utilizando cifrado, pero el cliente de correo continu\u00f3 utilizando el puerto 110 para POP3 en lugar de cambiar el n\u00famero de puerto a 995, que se utiliza para sesiones TLS con el servidor POP3, y no utiliz\u00f3 la extensi\u00f3n STARTTLS para cambiar a una sesi\u00f3n TLS. Algunas configuraciones antiguas de Outlook ignoraban, sin mostrar una advertencia, la opci\u00f3n de habilitar el cifrado TLS si se especificaba expl\u00edcitamente el puerto 110 y enviaban de inmediato los comandos USER y PASS en texto claro. La versi\u00f3n m\u00e1s antigua de Microsoft Outlook en la que se ha observado el problema data 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 ayud\u00f3 a identificar un problema de seguridad en el cliente de correo Outlook | ProHoster","description":"Los administradores de servidores de correo basados en Fedora Linux han observado problemas con el funcionamiento del cliente de correo Microsoft Outlook despu\u00e9s de la actualizaci\u00f3n de la distribuci\u00f3n.","canonical_url":"https:\/\/prohoster.info\/es\/blog\/news\/fedora-linux-pomog-vyyavit-problemu-s-bezopasnostyu-v-pochtovom-kliente-outlook","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"es_ES","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47Fedora Linux \u043f\u043e\u043c\u043e\u0433 \u0432\u044b\u044f\u0432\u0438\u0442\u044c \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0443 \u0441 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u044c\u044e \u0432 \u043f\u043e\u0447\u0442\u043e\u0432\u043e\u043c \u043a\u043b\u0438\u0435\u043d\u0442\u0435 Outlook | 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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Fuente: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"