{"id":182500,"date":"2026-07-07T04:53:59","date_gmt":"2026-07-07T02:54:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/dostupen-openssh-10-4"},"modified":"2026-07-07T04:53:59","modified_gmt":"2026-07-07T02:54:00","slug":"dostupen-openssh-10-4","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hr\/blog\/news\/dostupen-openssh-10-4","title":{"rendered":"Dostupan OpenSSH 10.4","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Nakon tri mjeseca razvoja, objavljen je OpenSSH 10.4, otvorena implementacija klijenta i servera za rad s protokolima SSH 2.0 i SFTP. Glavne promjene:  <\/p>\n<ul>\n<li class=\"l\"> Dodana je eksperimentalna podr\u0161ka za kombinirani sustav digitalnog potpisivanja &#171;mldsa44-ed25519&#187;, koji kombinira postkvantni algoritam ML-DSA 44 i algoritam temeljen na elipti\u010dnim krivinama Ed25519. Da biste uklju\u010dili podr\u0161ku, potrebno je dodati &#171;mldsa44-ed25519&#187; u direktive HostKeyAlgorithms i PubkeyAcceptedAlgorithms. Za generiranje klju\u010deva mo\u017eete koristiti naredbu &#171;ssh-keygen -t mldsa44-ed25519&#187;.\n<li class=\"l\"> U ssh i sshd implementirana je nova verzija sustava za prepoznavanje uzoraka, koja se temelji na nedeterministi\u010dkom kona\u010dnom automatu i nije podlo\u017ena problemu eksponencijalnog pove\u0107anja slo\u017eenosti prilikom kori\u0161tenja maski koje sadr\u017ee mnogo simbola &#171;*&#187;.\n<li class=\"l\"> Promijenjeno je pona\u0161anje Linux verzija sshd sa uklju\u010denom filtracijom sistemskih poziva pomo\u0107u seccomp-a. Ranije, kvar prilikom aktivacije SECCOMP ili NO_NEW_PRIVS na Linux sustavima bez njihove podr\u0161ke dovodio je do zapisivanja upozorenja u dnevnik i nastavka rada bez izolacije, a sada \u0107e dovesti do prekida rada.\n<li class=\"l\"> Kori\u0161tenjem opcije &#171;sshd -G&#187; u ispustu konfiguracije, direktive se sada zapisuju koriste\u0107i velika i mala slova, umjesto da se zapisuju samo malim slovima (npr. &#171;PubkeyAuthentication&#187; umjesto &#171;pubkeyauthentication&#187;).\n<li class=\"l\"> Pona\u0161anje ssh i sshd uskla\u0111eno je sa standardom RFC 4253: slanje tijekom ponovnog razmjene klju\u010deva poruka koji nisu povezani s razmjenom klju\u010deva sada \u0107e dovesti do prekida veze. Ranije su napada\u010di mogli izvesti DoS napad neprekidno \u0161alju\u0107i tijekom razmjene klju\u010deva vanjske poruke koje su se pohranjivale u <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/hr\/server\/dts-dronten\/\" title=\"serveru\" data-wpil-keyword-link=\"linked\">serveru<\/a> i tro\u0161ile memoriju.            <\/ul>\n<p>Ispravljeno je nekoliko sigurnosnih problema:  <\/p>\n<ul>\n<li class=\"l\"> U alatu ssh ispravljena je potencijalna upotreba memorije nakon njenog osloba\u0111anja (use-after-free) pri pristupu zlonamjernom <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/hr\/server\/dts-shicago\/\" title=\"poslu\u017eitelju\" data-wpil-keyword-link=\"linked\">poslu\u017eitelju<\/a>. Problem se iskori\u0161tava putem promjene host klju\u010d tijekom ponovnog razmjene klju\u010deva.\n<li class=\"l\"> Ranljivost u sftp-u koja omogu\u0107uje prijenos datoteke u drugu direktorij kada se pristupa zlonamjernom poslu\u017eitelju koriste\u0107i naredbu u obliku &#171;sftp host: \/path .&#187;.\n<li class=\"l\"> Ranljivost u scp omogu\u0107ava prilikom kopiranja datoteka izme\u0111u dva vanjska <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/hr\/server\/dts-dusseldorf\/\" title=\"poslu\u017eiteljima\" data-wpil-keyword-link=\"linked\">poslu\u017eiteljima<\/a>, jedan od kojih je pod kontrolom napada\u010da, organizirati zapisivanje datoteka u nadre\u0111enu direktoriju, koja se nalazi jedan nivo ispod ciljne direktorije.\n<li class=\"l\"> Ispravljena je gre\u0161ka u sshd-u koja se manifestirala prilikom kori\u0161tenja interne implementacije SFTP poslu\u017eitelja (&#171;internal-sftp&#187;), koja je prema zadanim postavkama onemogu\u0107ena. Problem se odnosi na prekid dugih nizova u komandnoj liniji nakon devetog argumenta, \u0161to dovodi do odbacivanja sljede\u0107ih argumenata. Tako mogu biti odbijene opcije vezane za sigurnost.\n<li class=\"l\"> U sshd-u ispravljena je nedostatak zbog kojeg direktiva &#171;DisableForwarding=yes&#187; nije onemogu\u0107ila mogu\u0107nost stvaranja tunela dopu\u0161tenih opcijom &#171;PermitTunnel=yes&#187; (koja po zadanim postavkama nije uklju\u010dena).\n<li class=\"l\"> U sshd-u ispravljena je gre\u0161ka koja se mo\u017ee iskoristiti za pokretanje napada uskra\u0107ivanja usluge u fazi prije autentifikacije kada je uklju\u010dena direktiva GSSAPIAuthentication (koja je prema zadanim postavkama isklju\u010dena). Problem se ne blokira putem ograni\u010denja &#171;MaxAuthTries&#187;, ali podlije\u017ee ograni\u010denju &#171;PerSourcePenalties&#187;.\n<li class=\"l\"> U sshd-u su otklonjeni nedostaci zbog kojih nije uvijek dodavana minimalna odgoda izme\u0111u poku\u0161aja autentifikacije.        <\/ul>\n<p>Izvor: <a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=65854\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 \u0442\u0440\u0451\u0445 \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 \u0432\u044b\u043f\u0443\u0441\u043a OpenSSH 10.4, \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: \u0414\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0430 \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430\u043b\u044c\u043d\u0430\u044f \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u043a\u043e\u043c\u0431\u0438\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0439 \u0441\u0445\u0435\u043c\u044b \u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0446\u0438\u0444\u0440\u043e\u0432\u044b\u0445 \u043f\u043e\u0434\u043f\u0438\u0441\u0435\u0439 &#171;mldsa44-ed25519&#187;, \u0441\u043e\u0447\u0435\u0442\u0430\u044e\u0449\u0438\u0439 \u043f\u043e\u0441\u0442\u043a\u0432\u0430\u043d\u0442\u043e\u0432\u044b\u0439 \u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c ML-DSA 44 \u0438 \u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c \u043d\u0430 \u0431\u0430\u0437\u0435 \u044d\u043b\u043b\u0438\u043f\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u043a\u0440\u0438\u0432\u044b\u0445 Ed25519. \u0414\u043b\u044f \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438 \u0441\u043b\u0435\u0434\u0443\u0435\u0442 \u0434\u043e\u0431\u0430\u0432\u0438\u0442\u044c &#171;mldsa44-ed25519&#187; \u0432 \u0434\u0438\u0440\u0435\u043a\u0442\u0438\u0432\u044b HostKeyAlgorithms \u0438 PubkeyAcceptedAlgorithms. [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-182500","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 name=\"description\" content=\"\u041f\u043e\u0441\u043b\u0435 \u0442\u0440\u0451\u0445 \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 \u0432\u044b\u043f\u0443\u0441\u043a OpenSSH 10.4, \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 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