{"id":170353,"date":"2026-05-04T12:24:42","date_gmt":"2026-05-04T10:24:42","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-dropbear-ssh-2026-90-s-ustraneniem-uyazvimostej"},"modified":"2026-05-04T12:24:42","modified_gmt":"2026-05-04T10:24:42","slug":"vypusk-dropbear-ssh-2026-90-s-ustraneniem-uyazvimostej","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hr\/blog\/news\/vypusk-dropbear-ssh-2026-90-s-ustraneniem-uyazvimostej","title":{"rendered":"Objavljen Dropbear SSH 2026.90 s ispravama ranjivosti.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Objavljen je izdanjak projekta Dropbear 2026.90, koji razvija SSH poslu\u017eitelj i klijent, a koji se uvelike koristi u be\u017ei\u010dnim usmjeriva\u010dima i kompaktnim distribucijama poput OpenWrt. Dropbear se isti\u010de niskom potro\u0161njom memorije, mogu\u0107no\u0161\u0107u isklju\u010divanja suvi\u0161nih funkcionalnosti tijekom faze sklapanja te podr\u0161kom za jedinstvenu izvr\u0161nu datoteku koja uklju\u010duje klijent i poslu\u017eitelj, sli\u010dno busyboxu. Kada se stati\u010dki povezuje s uClibc, izvr\u0161na datoteka Dropbear zauzima samo 110 kB. Dropbear podr\u017eava X11 preusmjeravanje, kompatibilan je s OpenSSH klju\u010dem (~\/.ssh\/authorized_keys) i mo\u017ee stvoriti vi\u0161estruke veze s preusmjeravanjem kroz tranzitni poslu\u017eitelj. Izvorni kod projekta napisan je na jeziku C i distribuira se pod licencom sli\u010dnom MIT-u.      <\/p>\n<p>U novoj verziji ispravljeno je nekoliko sigurnosnih problema:  <\/p>\n<ul>\n<li class=\"l\"> Djelomi\u010dno uklanjanje u scp ranjivosti (CVE-2019-6111), koja omogu\u0107ava prepisivanje drugih datoteka prilikom povezivanja na zlonamjerni <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/hr\/server\/dts-shicago\/\" title=\"poslu\u017eitelju\" data-wpil-keyword-link=\"linked\">poslu\u017eitelju<\/a>. Kada se koristi scp <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/hr\/server\/\"   title=\"server\" data-wpil-keyword-link=\"linked\">server<\/a> donosi odluku o tome koje datoteke i mape poslati klijentu, dok klijent samo provodi provjeru ispravnosti vra\u0107enih imena objekata. Provjera na strani klijenta sprje\u010dava izlazak iz trenutne mape (&#171;..\\\/&#187;), ali u slu\u010daju rekurzivnog kopiranja (-r) ne uzima u obzir slu\u010dajeve prijenosa mapa s imenima koji se razlikuju od prvotno zatra\u017eenih. Problem je rije\u0161en zabranom kori\u0161tenja opcije &#171;-r&#187; s ve\u0107 postoje\u0107om ciljnom mapom.\n<li class=\"l\"> Ranljivost (CVE-2026-35385) u alatima scp, zbog koje se nakon preuzimanja datoteke s pravima root uz opciju &#171;-O&#187; i bez opcije &#171;-p&#187; nisu \u010distili setuid\/setgid oznake.\n<li class=\"l\"> Mogu\u0107nost zaobila\u017eenja izvr\u0161enja naredbe &#171;forced_command&#187; u postavkama authorized_keys prilikom povezivanja autentificiranog korisnika koriste\u0107i opciju &#171;-t&#187; (prijava s provjerom lozinke i javnog klju\u010da).\n<li class=\"l\"> Usluga odbijena stvaranjem specijalne datoteke s imenom authorized_keys od strane lokalnog korisnika, \u0161to blokira operacije \u010ditanja.\n<li class=\"l\"> \u010citanje podataka iz podru\u010dja izvan bafera prilikom stvaranja obrtnika za preusmjeravanje klijentovih i poslu\u017eiteljskih zahtjeva, \u0161to mo\u017ee dovesti do zatvaranja proizvoljnih deskriptora datoteka.    <\/ul>\n<p>Nepovezane s sigurno\u0161\u0107u promjene:  <\/p>\n<ul>\n<li class=\"l\"> U ssh dodana opcija &#171;-R&#187; za propu\u0161tanje unix soketa kroz SSH tunel.\n<li class=\"l\"> U ssd dodana opcija &#171;-M&#187; za ograni\u010davanje maksimalnog trajanja sesije.\n<li class=\"l\"> U &#171;authorized_keys&#187; dodana je opcija &#171;permitlisten&#187; za ograni\u010davanje dopu\u0161tenih portova.\n<li class=\"l\"> Prekid podr\u0161ke za RSA klju\u010deve stvorene u dropbearkey 0.32 ili ranijim verzijama ovog alata, izlo\u017eenim napadima putem sporednih kanala koji vrednuju razliku u vremenu obrade podataka koji su se na\u0161li u ke\u0161u ili nisu.\n<li class=\"l\"> Za blokiranje poku\u0161aja otvaranja klju\u010deva na hostovima, broj upita otvorenih klju\u010deva je ograni\u010den na 15 poku\u0161aja po sesiji.        <\/ul>\n<p>Izvor: <a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=65356\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u043f\u0440\u043e\u0435\u043a\u0442\u0430 Dropbear 2026.90, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u044e\u0449\u0435\u0433\u043e \u0441\u0435\u0440\u0432\u0435\u0440 \u0438 \u043a\u043b\u0438\u0435\u043d\u0442 SSH, \u043f\u043e\u043b\u0443\u0447\u0438\u0432\u0448\u0438\u0439 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0435 \u0432 \u0431\u0435\u0441\u043f\u0440\u043e\u0432\u043e\u0434\u043d\u044b\u0445 \u043c\u0430\u0440\u0448\u0440\u0443\u0442\u0438\u0437\u0430\u0442\u043e\u0440\u0430\u0445 \u0438 \u043a\u043e\u043c\u043f\u0430\u043a\u0442\u043d\u044b\u0445 \u0434\u0438\u0441\u0442\u0440\u0438\u0431\u0443\u0442\u0438\u0432\u0430\u0445, \u043f\u043e\u0434\u043e\u0431\u043d\u044b\u0445 OpenWrt. Dropbear \u043e\u0442\u043b\u0438\u0447\u0430\u0435\u0442\u0441\u044f \u043d\u0438\u0437\u043a\u0438\u043c \u043f\u043e\u0442\u0440\u0435\u0431\u043b\u0435\u043d\u0438\u0435\u043c \u043f\u0430\u043c\u044f\u0442\u0438, \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c\u044e \u043e\u0442\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u043b\u0438\u0448\u043d\u0435\u0439 \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u043d\u0430 \u044d\u0442\u0430\u043f\u0435 \u0441\u0431\u043e\u0440\u043a\u0438 \u0438 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u043e\u0439 \u0441\u0431\u043e\u0440\u043a\u0438 \u043a\u043b\u0438\u0435\u043d\u0442\u0430 \u0438 \u0441\u0435\u0440\u0432\u0435\u0440\u0430 \u0432 \u043e\u0434\u043d\u043e\u043c \u0438\u0441\u043f\u043e\u043b\u043d\u044f\u0435\u043c\u043e\u043c \u0444\u0430\u0439\u043b\u0435 \u043f\u043e \u0430\u043d\u0430\u043b\u043e\u0433\u0438\u0438 \u0441 busybox. \u041f\u0440\u0438 \u0441\u0442\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u043c \u0441\u0432\u044f\u0437\u044b\u0432\u0430\u043d\u0438\u0438 \u0441 uClibc \u0438\u0441\u043f\u043e\u043b\u043d\u044f\u0435\u043c\u044b\u0439 \u0444\u0430\u0439\u043b Dropbear \u0437\u0430\u043d\u0438\u043c\u0430\u0435\u0442 [&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-170353","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=\"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u043f\u0440\u043e\u0435\u043a\u0442\u0430 Dropbear 2026.90, 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OpenWrt.","canonical_url":"https:\/\/prohoster.info\/hr\/blog\/news\/vypusk-dropbear-ssh-2026-90-s-ustraneniem-uyazvimostej","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"hr_HR","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0412\u044b\u043f\u0443\u0441\u043a Dropbear SSH 2026.90 \u0441 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0435\u043c \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 | ProHoster","og:description":"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u043f\u0440\u043e\u0435\u043a\u0442\u0430 Dropbear 2026.90, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u044e\u0449\u0435\u0433\u043e \u0441\u0435\u0440\u0432\u0435\u0440 \u0438 \u043a\u043b\u0438\u0435\u043d\u0442 SSH, \u043f\u043e\u043b\u0443\u0447\u0438\u0432\u0448\u0438\u0439 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0435 \u0432 \u0431\u0435\u0441\u043f\u0440\u043e\u0432\u043e\u0434\u043d\u044b\u0445 \u043c\u0430\u0440\u0448\u0440\u0443\u0442\u0438\u0437\u0430\u0442\u043e\u0440\u0430\u0445 \u0438 \u043a\u043e\u043c\u043f\u0430\u043a\u0442\u043d\u044b\u0445 \u0434\u0438\u0441\u0442\u0440\u0438\u0431\u0443\u0442\u0438\u0432\u0430\u0445, \u043f\u043e\u0434\u043e\u0431\u043d\u044b\u0445 OpenWrt.","og:url":"https:\/\/prohoster.info\/hr\/blog\/news\/vypusk-dropbear-ssh-2026-90-s-ustraneniem-uyazvimostej","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":"2026-05-04T10:24:42+00:00","article:modified_time":"2026-05-04T10:24:42+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\/hr\/wp-json\/wp\/v2\/posts\/170353","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/comments?post=170353"}],"version-history":[{"count":2,"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/posts\/170353\/revisions"}],"predecessor-version":[{"id":173160,"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/posts\/170353\/revisions\/173160"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/media?parent=170353"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/categories?post=170353"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/tags?post=170353"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}