{"id":167221,"date":"2026-04-02T23:11:54","date_gmt":"2026-04-02T21:11:54","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/reliz-openssh-10-3"},"modified":"2026-04-04T11:22:40","modified_gmt":"2026-04-04T09:22:40","slug":"reliz-openssh-10-3","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/news\/reliz-openssh-10-3","title":{"rendered":"Uvo\u013enenie OpenSSH 10.3","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Po polroku v\u00fdvoja bol zverejnen\u00fd vydanie OpenSSH 10.3, otvorenej implement\u00e1cie klienta a <a href=\"https:\/\/prohoster.info\/sk\/server\/\">servera<\/a> pre pr\u00e1cu s protokolmi SSH 2.0 a SFTP. Hlavn\u00e9 zmeny:<\/p>\n<ul>\n<li class=\"l\">Bolest sa odstr\u00e1nila zranite\u013enos\u0165, ktor\u00e1 \u00fato\u010dn\u00edkovi ovl\u00e1daj\u00facemu pou\u017e\u00edvate\u013esk\u00e9 meno pri spusten\u00ed n\u00e1stroja ssh potenci\u00e1lne umo\u017enila vykon\u00e1va\u0165 \u013eubovo\u013en\u00e9 shellov\u00e9 pr\u00edkazy. Zranite\u013enos\u0165 sa prejavuje v syst\u00e9moch pou\u017e\u00edvaj\u00facich substit\u00faciu \"%u\" v niektor\u00fdch pr\u00edkazoch konfigura\u010dn\u00e9ho s\u00faboru, ako je \"Match exec\". Probl\u00e9m je sp\u00f4soben\u00fd kontrolou \u0161peci\u00e1lnych znakov v pou\u017e\u00edvate\u013eskom mene na \u00farovni po vykonan\u00ed %-substit\u00faci\u00ed v konfigura\u010dnom s\u00fabore ssh_config.<\/li>\n<li class=\"l\">Odstr\u00e1nen\u00fd probl\u00e9m so zabezpe\u010den\u00edm v sshd, ktor\u00fd bol sp\u00f4soben\u00fd nespr\u00e1vnym porovn\u00e1van\u00edm mo\u017enosti authorized_keys principals=&gt;&gt; so zoznamom mien (principal) v certifik\u00e1te, ke\u010f v men\u00e1ch bol uveden\u00fd symbol \",\". Na vyu\u017eitie zranite\u013enosti je potrebn\u00e9, aby bola v mo\u017enosti authorized_keys principals=&gt;&gt; uveden\u00e1 nieko\u013eko mien a aby certifika\u010dn\u00e1 autorita vydala certifik\u00e1t s nieko\u013ek\u00fdmi menami oddelen\u00fdmi \u010diarkou (obe zvy\u010dajne nie je povolen\u00e9). Zmenen\u00e9 spr\u00e1vanie vo vz\u0165ahu k certifik\u00e1tom s pr\u00e1zdnym menom \u2014 predt\u00fdm sa pr\u00e1zdne meno podobalo v\u0161etk\u00fdm mo\u017enostiam authorized_keys principals=&gt;&gt;, teraz tak nie je.<\/li>\n<li class=\"l\">V scp bola odstr\u00e1nen\u00e1 ot\u00e1zka, kde po nahrat\u00ed s\u00faboru s pr\u00e1vami root s pou\u017eit\u00edm mo\u017enosti \"-O\" a bez mo\u017enosti \"-p\" neboli vymazan\u00e9 flagy setuid\/setgid.<\/li>\n<li class=\"l\">V sshd bola opraven\u00e1 ot\u00e1zka spracovania k\u013e\u00fa\u010dov ECDSA v pr\u00edkazoch PubkeyAcceptedAlgorithms a HostbasedAcceptedAlgorithms, kv\u00f4li ktorej pri zadan\u00ed ak\u00e9hoko\u013evek algoritmu ECDSA (napr\u00edklad \"ecdsa-sha2-nistp384\") za\u010dali by\u0165 prij\u00edman\u00e9 aj v\u0161etky ostatn\u00e9 algoritmy zalo\u017een\u00e9 na ECDSA, aj ke\u010f neboli explicitne uveden\u00e9 v zozname povolen\u00fdch.<\/li>\n<li class=\"l\">V ssh a sshd, pri komunik\u00e1cii s SSH-agentami, bola pridan\u00e1 podpora identifik\u00e1torov (codepoint), definovan\u00fdch IANA v \u0161pecifik\u00e1cii draft-ietf-sshm-ssh-agent. Podpora pre predt\u00fdm pou\u017e\u00edvan\u00e9 identifik\u00e1tory vo forme \"@openssh.com\" bola zachovan\u00e1.<\/li>\n<li class=\"l\">V ssh-agent bola implementovan\u00e1 roz\u0161\u00edrenie \"query\", definovan\u00e9 v \u0161pecifik\u00e1cii draft-ietf-sshm-ssh-agent, ktor\u00e9 umo\u017e\u0148uje stanovi\u0165 podporovan\u00e9 funkcie agentom. Pre po\u017eiadavku zoznamu podporovan\u00fdch roz\u0161\u00edren\u00ed protokolu cez po\u017eiadavku \"query\" bola do n\u00e1stroja ssh-add pridan\u00e1 mo\u017enos\u0165 \"-Q\".<\/li>\n<li class=\"l\">V sshd_config bolo povolen\u00e9 uv\u00e1dzanie nieko\u013ek\u00fdch s\u00faborov v pr\u00edkaze RevokedKeys, a v ssh_config \u2014 v pr\u00edkaze RevokedHostKeys.<\/li>\n<li class=\"l\">Do ssh bola pridan\u00e1 escape pr\u00edkaz \u201e~I\u201c a vo\u013eba \u201e-O conninfo\u201c na zobrazenie inform\u00e1ci\u00ed o aktu\u00e1lnom pripojen\u00ed, ako aj vo\u013eba \u201e-O channels\u201c na zobrazenie inform\u00e1ci\u00ed o otvoren\u00fdch kan\u00e1loch.<\/li>\n<li class=\"l\">V sshd v direkt\u00edve PerSourcePenalties bola implementovan\u00e1 vo\u013eba \u2018invaliduser\u2018 na pridanie oneskorenia v pr\u00edpade pokusu o prihl\u00e1senie pod neexistuj\u00facim pou\u017e\u00edvate\u013eom (predvolene 5 sek\u00fand). Pridan\u00e1 mo\u017enos\u0165 zadania necel\u00fdch hodn\u00f4t oneskorenia.<\/li>\n<li class=\"l\">V sshd bola pridan\u00e1 mo\u017enos\u0165 GSSAPIDelegateCredentials na spr\u00e1vu prij\u00edmania delegovan\u00fdch poveren\u00ed poskytnut\u00fdch klientom.<\/li>\n<li class=\"l\">V ssh-keygen bola pridan\u00e1 podpora z\u00e1pisu k\u013e\u00fa\u010dov ED25519 vo form\u00e1te PKCS8.<\/li>\n<li class=\"l\">Pridan\u00e1 podpora sch\u00e9my digit\u00e1lnych podpisov ed25519, realizovan\u00e1 prostredn\u00edctvom libcrypto.<\/li>\n<\/ul>\n<p>Zdroj: <a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=65126\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 \u043f\u043e\u043b\u0443\u0433\u043e\u0434\u0430 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a OpenSSH 10.3, \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. \u041e\u0441\u043d\u043e\u0432\u043d\u044b\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f: \u0423\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0435\u043c\u0443, \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u0438\u0440\u0443\u044e\u0449\u0435\u043c\u0443 \u0438\u043c\u044f \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f, \u043f\u0435\u0440\u0435\u0434\u0430\u0432\u0430\u0435\u043c\u043e\u0435 \u043f\u0440\u0438 \u0437\u0430\u043f\u0443\u0441\u043a\u0435 \u0443\u0442\u0438\u043b\u0438\u0442\u044b ssh, \u043f\u043e\u0442\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u044b\u0445 shell-\u043a\u043e\u043c\u0430\u043d\u0434. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0449\u0438\u0445 \u043f\u043e\u0434\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0443 &#171;%u&#187; \u0432 \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0434\u0438\u0440\u0435\u043a\u0442\u0438\u0432\u0430\u0445 \u0444\u0430\u0439\u043b\u0430 \u043a\u043e\u043d\u0444\u0438\u0433\u0443\u0440\u0430\u0446\u0438\u0438, \u0442\u0430\u043a\u0438\u0445 \u043a\u0430\u043a &#171;Match exec&#187;. [&hellip;]<\/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-167221","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.5 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u043e\u0441\u043b\u0435 \u043f\u043e\u043b\u0443\u0433\u043e\u0434\u0430 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a OpenSSH 10.3, \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 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\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-10-3","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":"2026-04-02T21:11:54+00:00","article:modified_time":"2026-04-04T09:22:40+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\/167221","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\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/comments?post=167221"}],"version-history":[{"count":1,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/posts\/167221\/revisions"}],"predecessor-version":[{"id":167487,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/posts\/167221\/revisions\/167487"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/media?parent=167221"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/categories?post=167221"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/tags?post=167221"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}