{"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\/sk\/blog\/news\/reliz-openssh-9-1","title":{"rendered":"Uvo\u013enenie OpenSSH 9.1","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Po \u0161iestich mesiacoch v\u00fdvoja bol uvo\u013enen\u00fd OpenSSH 9.1, otvoren\u00e1 implement\u00e1cia klienta a servera pre pr\u00e1cu s protokolmi SSH 2.0 a SFTP. Verzia sa prim\u00e1rne zameriava na opravy ch\u00fdb, vr\u00e1tane odstr\u00e1nenia nieko\u013ek\u00fdch potenci\u00e1lnych zranite\u013enost\u00ed zapr\u00ed\u010dinen\u00fdch probl\u00e9mami s pam\u00e4\u0165ou:  <\/p>\n<ul>\n<li class=\"l\"> Jednobajtov\u00e9 prete\u010denie v k\u00f3de spracovania SSH banneru v n\u00e1stroji ssh-keyscan.\n<li class=\"l\"> Dvojit\u00e9 volanie funkcie free() pri chybe pri v\u00fdpo\u010dte hashov pre s\u00fabory v k\u00f3de na vytv\u00e1ranie a overovanie digit\u00e1lnych podpisov v n\u00e1stroji ssh-keygen.\n<li class=\"l\"> Dvojit\u00e9 volanie funkcie free() pri spracovan\u00ed ch\u00fdb v n\u00e1stroji ssh-keysign.    <\/ul>\n<p>Hlavn\u00e9 zmeny:  <\/p>\n<ul>\n<li class=\"l\"> V ssh a sshd bola pridan\u00e1 direkt\u00edva RequiredRSASize, ktor\u00e1 umo\u017e\u0148uje ur\u010di\u0165 minim\u00e1lnu prijate\u013en\u00fa ve\u013ekos\u0165 RSA k\u013e\u00fa\u010dov. V sshd bud\u00fa ignorovan\u00e9 k\u013e\u00fa\u010de men\u0161ieho rozmeru, a v ssh to povedie k ukon\u010deniu spojenia.\n<li class=\"l\"> Prenosn\u00e1 verzia OpenSSH bola prekonvertovan\u00e1 na pou\u017e\u00edvanie SSH k\u013e\u00fa\u010dov na osved\u010denie digit\u00e1lnych podpisov commitov a tagov v Gite.\n<li class=\"l\"> Direkt\u00edvy SetEnv v konfigur\u00e1ci\u00e1ch ssh_config a sshd_config teraz aplikuj\u00fa hodnotu z prv\u00e9ho uvedenia premennej prostredia, ak je definovan\u00e1 v konfigur\u00e1cii viackr\u00e1t (predt\u00fdm sa aplikovala posledn\u00e1 zmienka).\n<li class=\"l\"> Pri volan\u00ed utilitky ssh-keygen s praporom &#171;-A&#187; (gener\u00e1cia v\u0161etk\u00fdch podporovan\u00fdch predvolen\u00fdch typov hos\u0165ovsk\u00fdch k\u013e\u00fa\u010dov) je zak\u00e1zan\u00e1 gener\u00e1cia k\u013e\u00fa\u010dov DSA, ktor\u00e9 sa u\u017e nieko\u013eko rokov nepou\u017e\u00edvaj\u00fa predvolene.\n<li class=\"l\"> V sftp-server a sftp bolo implementovan\u00e9 roz\u0161\u00edrenie &#171;users-groups-by-id@openssh.com&#187;, ktor\u00e9 klientovi umo\u017e\u0148uje po\u017eadova\u0165 men\u00e1 pou\u017e\u00edvate\u013eov a skup\u00edn zodpovedaj\u00facich zadan\u00e9mu s\u00faboru digit\u00e1lnych identifik\u00e1torov (uid a gid). V sftp bolo toto roz\u0161\u00edrenie vyu\u017eit\u00e9 na zobrazenie mien pri v\u00fdstupe obsahu adres\u00e1ra.\n<li class=\"l\"> V sftp-server bolo implementovan\u00e9 roz\u0161\u00edrenie &#171;home-directory&#187; na roz\u0161\u00edrenie ciest ~\\\/ a ~user\\\/, alternat\u00edvne k predt\u00fdm navrhnut\u00e9mu roz\u0161\u00edreniu &#171;expand-path@openssh.com&#187; (roz\u0161\u00edrenie &#171;home-directory&#187; bolo navrhnut\u00e9 na \u0161tandardiz\u00e1ciu a u\u017e ho podporuje niektor\u00e9 klienti).\n<li class=\"l\"> V ssh-keygen a sshd bola pridan\u00e1 mo\u017enos\u0165 uvies\u0165 \u010das v \u010dasovom p\u00e1sme UTC pri ur\u010dovan\u00ed intervalov platnosti certifik\u00e1tov a k\u013e\u00fa\u010dov, okrem syst\u00e9mov\u00e9ho \u010dasu.\n<li class=\"l\"> V sftp je povolen\u00e9 uv\u00e1dza\u0165 \u010fal\u0161ie argumenty v proption &#171;-D&#187; (napr\u00edklad &#171;\\\/usr\\\/libexec\\\/sftp-server -el debug3&#187;).\n<li class=\"l\"> V ssh-keygen je povolen\u00e9 pou\u017eitie praporu &#171;-U&#187; (pou\u017eitie ssh-agent) spolu s oper\u00e1ciami &#171;-Y sign&#187; na ur\u010denie, \u010di s\u00fa s\u00fakromn\u00e9 k\u013e\u00fa\u010de umiestnen\u00e9 v ssh-agente.<br \/>\n<br \/>Zdroj: <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 5.0.4 - aioseo.com -->\n\t<meta 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OpenSSH 9.1 | ProHoster","og:description":"\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.","og:url":"https:\/\/prohoster.info\/sk\/blog\/news\/reliz-openssh-9-1","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2022-10-05T07:36:48+00:00","article:modified_time":"2022-10-05T07:36:48+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":[],"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/posts\/105252","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/comments?post=105252"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/posts\/105252\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/media?parent=105252"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/categories?post=105252"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/tags?post=105252"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}