{"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\/it\/blog\/news\/reliz-openssh-9-1","title":{"rendered":"Rilascio di OpenSSH 9.1","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Dopo sei mesi di sviluppo, \u00e8 stata pubblicata la versione OpenSSH 9.1, un'implementazione open source di client e server per operare tramite i protocolli SSH 2.0 e SFTP. L'uscita \u00e8 principalmente caratterizzata da correzioni di bug, inclusa la risoluzione di alcune potenziali vulnerabilit\u00e0 causate da problemi di gestione della memoria:  <\/p>\n<ul>\n<li class=\"l\"> Overflow di byte singoli nel codice di gestione del banner SSH nell'utilit\u00e0 ssh-keyscan.\n<li class=\"l\"> Doppia chiamata della funzione free() in caso di errore nel calcolo degli hash per i file nel codice di creazione e verifica delle firme digitali nell'utilit\u00e0 ssh-keygen.\n<li class=\"l\"> Doppia chiamata della funzione free() durante la gestione degli errori nell'utilit\u00e0 ssh-keysign.    <\/ul>\n<p>Variazioni principali:  <\/p>\n<ul>\n<li class=\"l\"> Nel ssh e sshd \u00e8 stata aggiunta la direttiva RequiredRSASize, che consente di definire la dimensione minima consentita delle chiavi RSA. In sshd le chiavi di dimensione inferiore verranno ignorate, mentre in ssh porteranno alla terminazione della connessione.\n<li class=\"l\"> La versione portabile di OpenSSH \u00e8 stata aggiornata per utilizzare chiavi SSH per la certificazione delle firme digitali di commit e tag in Git.\n<li class=\"l\"> Le direttive SetEnv nei file di configurazione ssh_config e sshd_config ora applicano il valore dalla prima occorrenza della variabile d'ambiente, se definita pi\u00f9 volte nella configurazione (in precedenza veniva utilizzata l'ultima occorrenza).\n<li class=\"l\"> Quando si chiama l'utilit\u00e0 ssh-keygen con l'opzione &#171;-A&#187; (generazione di tutti i tipi di chiavi host supportati per impostazione predefinita), la generazione delle chiavi DSA, che non vengono utilizzate di default da diversi anni, \u00e8 disabilitata.\n<li class=\"l\"> Nello sftp-server e nell'sftp \u00e8 implementata l'estensione &#171;users-groups-by-id@openssh.com&#187;, che consente al client di richiedere i nomi degli utenti e dei gruppi corrispondenti a un determinato insieme di identificatori numerici (uid e gid). In sftp, questa estensione \u00e8 stata utilizzata per visualizzare i nomi durante la visualizzazione del contenuto della directory.\n<li class=\"l\"> Nello sftp-server \u00e8 implementata l'estensione &#171;home-directory&#187; per rivelare i percorsi ~\\\/ e ~user\\\/, alternativa a quella precedentemente proposta per gli stessi scopi, l'estensione &#171;expand-path@openssh.com&#187; (l'estensione &#171;home-directory&#187; \u00e8 stata proposta per la standardizzazione ed \u00e8 gi\u00e0 supportata da alcuni client).\n<li class=\"l\"> In ssh-keygen e sshd \u00e8 stata aggiunta la possibilit\u00e0 di specificare un tempo in fuso orario UTC nella definizione degli intervalli di validit\u00e0 di certificati e chiavi, oltre all'orario di sistema.\n<li class=\"l\"> Nello sftp \u00e8 permesso specificare argomenti aggiuntivi nell'opzione &#171;-D&#187; (ad esempio, &#171;\\\/usr\\\/libexec\\\/sftp-server -el debug3&#187;).\n<li class=\"l\"> Nell'ssh-keygen \u00e8 consentito utilizzare l'opzione &#171;-U&#187; (utilizzo di ssh-agent) insieme alle operazioni &#171;-Y sign&#187; per determinare che le chiavi private sono posizionate nell'ssh-agent.<br \/>\n<br \/>Fonte: <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 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" 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