{"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\/sl\/blog\/news\/dostupen-openssh-10-4","title":{"rendered":"OpenSSH 10.4 je na voljo","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Po treh mesecih razvoja je iz\u0161la razli\u010dica OpenSSH 10.4, odprta implementacija odjemalca in stre\u017enika za delo s protokoli SSH 2.0 in SFTP. Glavne spremembe:  <\/p>\n<ul>\n<li class=\"l\"> Dodana je eksperimentalna podr\u0161ka za kombinovani algoritam za generisanje digitalnih potpisa 'mldsa44-ed25519', koji kombinuje postkvantni algoritam ML-DSA 44 i algoritam zasnovan na elipti\u010dnim krivuljama Ed25519. Da biste omogu\u0107ili podr\u0161ku, potrebno je dodati 'mldsa44-ed25519' u direktive HostKeyAlgorithms i PubkeyAcceptedAlgorithms. Za generisanje klju\u010deva mo\u017ee se koristiti komanda 'ssh-keygen -t mldsa44-ed25519'.\n<li class=\"l\"> U ssh i sshd implementirana je nova verzija sistema za prepoznavanje \u0161ablona, zasnovana na nedeterministi\u010dkom kona\u010dnom automatu koja nije podlo\u017ena problemu eksponencijalnog rasta slo\u017eenosti prilikom kori\u0161\u0107enja maski sa mnogo simbola '*'.\n<li class=\"l\"> Spremenjeno je obna\u0161anje Linux razli\u010dic sshd z aktivirano filtracijo sistemskih klicev s pomo\u010djo seccomp. Prej je ob napaki pri aktivaciji SECCOMP ali NO_NEW_PRIVS na Linux sistemih brez njihove podpore pri\u0161lo do zapisovanja opozoril v dnevnik in nadaljevanja delovanja brez izolacije, sedaj pa bo to povzro\u010dilo nenaden izhod.\n<li class=\"l\"> Kada se koristi opcija 'sshd -G', direktive u dump-u konfiguracije sada se bele\u017ee sa velikim i malim slovima, umesto samo malim (npr. 'PubkeyAuthentication' umesto 'pubkeyauthentication').\n<li class=\"l\"> Obna\u0161anje ssh in sshd je usklajeno s standardom RFC 4253: po\u0161iljanje sporo\u010dil, ki niso povezane z izmenjavo klju\u010dev, med ponovnim dogovorom klju\u010dev bo sedaj povzro\u010dilo prekinitev povezave. Prej so lahko napadalci izvedli DoS napad, tako da so nenehno po\u0161iljali zunanja sporo\u010dila v procesu izmenjave klju\u010dev, ki so bila shranjena v <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/sl\/server\/dts-dronten\/\" title=\"stre\u017enikom\" data-wpil-keyword-link=\"linked\">stre\u017enikom<\/a> in so porabila pomnilnik.            <\/ul>\n<p>Odpravljene so bile nekatere varnostne te\u017eave:  <\/p>\n<ul>\n<li class=\"l\"> V orodju ssh je odpravljeno potencialno dostopanje do pomnilnika po njegovi osvoboditvi (use-after-free) pri dostopu do zlonamernega <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/sl\/server\/dts-shicago\/\" title=\"stre\u017eniku\" data-wpil-keyword-link=\"linked\">stre\u017eniku<\/a>. Te\u017eava se izkori\u0161\u010da z menjavo gostiteljskega klju\u010da med ponovnim dogovorom klju\u010dev.\n<li class=\"l\"> Ranljivost u sftp omogu\u0107ava preuzimanje datoteka u drugu direktoriju prilikom povezivanja sa zlonamernim serverom kori\u0161\u0107enjem komande u formi 'sftp host:\/putanja .'.\n<li class=\"l\"> Ranljivost v scp, ki omogo\u010da pri kopiranju datotek med dvema zunanjima <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/sl\/server\/dts-dusseldorf\/\" title=\"stre\u017eniki\" data-wpil-keyword-link=\"linked\">stre\u017eniki<\/a>, en la que uno de ellos est\u00e1 bajo el control del atacante, organizar la escritura de archivos en el directorio padre, que est\u00e1 un nivel por debajo del directorio objetivo.\n<li class=\"l\"> Re\u0161en je problem u sshd koji se manifestovao prilikom kori\u0161\u0107enja interne implementacije SFTP servera ('internal-sftp'), koja je po defaultu isklju\u010dena. Problem se odnosi na se\u010denje dugih nizova u komandnoj liniji posle devetog argumenta, \u0161to mo\u017ee dovesti do gubitka slede\u0107ih argumenata. Tako potencijalno mogu biti propu\u0161tene opcije povezane sa bezbedno\u0161\u0107u.\n<li class=\"l\"> U sshd je ispravljena gre\u0161ka zbog koje direktiva 'DisableForwarding=yes' nije onemogu\u0107avala mogu\u0107nost kreiranja tunela odobrenih opcijom 'PermitTunnel=yes' (po defaultu nije postavljena).\n<li class=\"l\"> U sshd je re\u0161en problem koji se mo\u017ee koristiti za iniciranje napada uskra\u0107ivanja usluga pre autentikacije kada je u pode\u0161avanjima uklju\u010dena direktiva GSSAPIAuthentication (po defaultu isklju\u010dena). Problem nije blokiran putem limita 'MaxAuthTries', ali spada pod akciju ograni\u010denja 'PerSourcePenalties'.\n<li class=\"l\"> En sshd se corrigieron defectos que hac\u00edan que no siempre se a\u00f1adiera un retraso m\u00ednimo entre los intentos de autenticaci\u00f3n.        <\/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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