{"id":105252,"date":"2022-10-05T09:36:48","date_gmt":"2022-10-05T07:36:48","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/reliz-openssh-9-1"},"modified":"2022-10-05T09:36:48","modified_gmt":"2022-10-05T07:36:48","slug":"reliz-openssh-9-1","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/reliz-openssh-9-1","title":{"rendered":"Lanzamiento de OpenSSH 9.1","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Despu\u00e9s de seis meses de desarrollo, se publica el lanzamiento de OpenSSH 9.1, una implementaci\u00f3n abierta de cliente y servidor para trabajar con los protocolos SSH 2.0 y SFTP. La versi\u00f3n se caracteriza principalmente por incluir correcciones de errores, incluyendo la resoluci\u00f3n de varias vulnerabilidades potenciales causadas por problemas de manejo de memoria:  <\/p>\n<ul>\n<li class=\"l\"> Desbordamiento de un byte en el c\u00f3digo que maneja el banner SSH en la utilidad ssh-keyscan.\n<li class=\"l\"> Doble llamada a la funci\u00f3n free() en caso de error al calcular los hashes para los archivos en el c\u00f3digo de creaci\u00f3n y verificaci\u00f3n de firmas digitales en la utilidad ssh-keygen.\n<li class=\"l\"> Doble llamada a la funci\u00f3n free() al manejar errores en la utilidad ssh-keysign.    <\/ul>\n<p>Principales cambios:  <\/p>\n<ul>\n<li class=\"l\"> Se ha a\u00f1adido la directiva RequiredRSASize en ssh y sshd, que permite definir el tama\u00f1o m\u00ednimo aceptable de las claves RSA. En sshd, se ignorar\u00e1n las claves m\u00e1s peque\u00f1as, y en ssh, esto provocar\u00e1 la finalizaci\u00f3n de la conexi\u00f3n.\n<li class=\"l\"> La edici\u00f3n port\u00e1til de OpenSSH ha sido trasladada para utilizar claves SSH para firmar digitalmente los commits y etiquetas en Git.\n<li class=\"l\"> Las directivas SetEnv en los archivos de configuraci\u00f3n ssh_config y sshd_config ahora aplican el valor de la primera menci\u00f3n de la variable de entorno si se define varias veces en la configuraci\u00f3n (anteriormente se aplicaba la \u00faltima menci\u00f3n).\n<li class=\"l\"> Al llamar a la utilidad ssh-keygen con la opci\u00f3n \u2018-A\u2019 (generaci\u00f3n de todos los tipos de claves de host compatibles por defecto), se desactiva la generaci\u00f3n de claves DSA, que no se utilizan por defecto desde hace varios a\u00f1os.\n<li class=\"l\"> En sftp-server y sftp se ha implementado la extensi\u00f3n \u2018users-groups-by-id@openssh.com\u2019, que permite al cliente solicitar los nombres de usuarios y grupos correspondientes a un conjunto especificado de identificadores num\u00e9ricos (uid y gid). En sftp, esta extensi\u00f3n se utiliza para mostrar los nombres al listar el contenido del directorio.\n<li class=\"l\"> En sftp-server se ha implementado la extensi\u00f3n \u2018home-directory\u2019 para revelar las rutas ~\/ y ~user\/, en lugar de la extensi\u00f3n \u2018expand-path@openssh.com\u2019 que se propuso anteriormente para los mismos fines (la extensi\u00f3n \u2018home-directory\u2019 se sugiri\u00f3 para su estandarizaci\u00f3n y ya es compatible con algunos clientes).\n<li class=\"l\"> En ssh-keygen y sshd se ha a\u00f1adido la capacidad de especificar la hora en la zona horaria UTC al determinar los intervalos de validez de los certificados y claves, adem\u00e1s del tiempo del sistema.\n<li class=\"l\"> En sftp se permite especificar argumentos adicionales en la opci\u00f3n \u2018-D\u2019 (por ejemplo, \u2018\/usr\/libexec\/sftp-server -el debug3\u2019).\n<li class=\"l\"> En ssh-keygen se permite el uso de la opci\u00f3n \u2018-U\u2019 (uso de ssh-agent) junto con las operaciones \u2018-Y sign\u2019 para indicar que las claves privadas est\u00e1n almacenadas en ssh-agent.<br \/>\n<br \/>Fuente: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57871\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 \u0448\u0435\u0441\u0442\u0438 \u043c\u0435\u0441\u044f\u0446\u0435\u0432 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0440\u0435\u043b\u0438\u0437 OpenSSH 9.1, \u043e\u0442\u043a\u0440\u044b\u0442\u043e\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043a\u043b\u0438\u0435\u043d\u0442\u0430 \u0438 \u0441\u0435\u0440\u0432\u0435\u0440\u0430 \u0434\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u043f\u043e \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430\u043c SSH 2.0 \u0438 SFTP. \u0412\u044b\u043f\u0443\u0441\u043a \u0445\u0430\u0440\u0430\u043a\u0442\u0435\u0440\u0438\u0437\u0443\u0435\u0442\u0441\u044f \u043a\u0430\u043a \u0432 \u043e\u0441\u043d\u043e\u0432\u043d\u043e\u043c \u0441\u043e\u0434\u0435\u0440\u0436\u0430\u0449\u0438\u0439 \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043e\u043a, \u0432 \u0442\u043e\u043c \u0447\u0438\u0441\u043b\u0435 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u043e \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u0438\u0445 \u043f\u043e\u0442\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u044b\u0445 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439, \u0432\u044b\u0437\u0432\u0430\u043d\u043d\u044b\u0445 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430\u043c\u0438 \u043f\u0440\u0438 \u0440\u0430\u0431\u043e\u0442\u0435 \u0441 \u043f\u0430\u043c\u044f\u0442\u044c\u044e: \u041e\u0434\u043d\u043e\u0431\u0430\u0439\u0442\u043e\u0432\u043e\u0435 \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u0432 \u043a\u043e\u0434\u0435 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438 SSH-\u0431\u0430\u043d\u043d\u0435\u0440\u0430 \u0432 \u0443\u0442\u0438\u043b\u0438\u0442\u0435 ssh-keyscan. \u0414\u0432\u043e\u0439\u043d\u043e\u0439 \u0432\u044b\u0437\u043e\u0432 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 free() [&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-105252","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u043e\u0441\u043b\u0435 \u0448\u0435\u0441\u0442\u0438 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