{"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\/no\/blog\/news\/dostupen-openssh-10-4","title":{"rendered":"OpenSSH 10.4 er tilgjengelig","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Etter tre m\u00e5neder med utvikling har OpenSSH 10.4 blitt publisert, en \u00e5pen implementering av klient og server for \u00e5 arbeide med SSH 2.0 og SFTP-protokollene. Hovedendringer:  <\/p>\n<ul>\n<li class=\"l\"> Eksperimentell st\u00f8tte for den kombinerte digitale signaturordningen &#171;mldsa44-ed25519&#187; er lagt til, som kombinerer den post-kvantiske algoritmen ML-DSA 44 og algoritmen basert p\u00e5 elliptiske kurver Ed25519. For \u00e5 aktivere st\u00f8tten, m\u00e5 du legge til &#171;mldsa44-ed25519&#187; i direktivene HostKeyAlgorithms og PubkeyAcceptedAlgorithms. Du kan bruke kommandoen &#171;ssh-keygen -t mldsa44-ed25519&#187; for \u00e5 generere n\u00f8kler.\n<li class=\"l\"> Ny implementering av m\u00f8nstersammenligningssystemet, basert p\u00e5 en ikke-deterministisk endelig automat, er involvert i ssh og sshd, og er ikke utsatt for problemer med eksponentiell vekst av beregningskompleksitet ved bruk av masker som inneholder mange &#171;*&#187; tegn.\n<li class=\"l\"> Adferden til Linux-bygningene av sshd med aktivert systemanropsfiltrering ved hjelp av seccomp har blitt endret. Tidligere resulterte en feil n\u00e5r SECCOMP eller NO_NEW_PRIVS ble aktivert p\u00e5 Linux-systemer uten st\u00f8tte til logging av en advarsel og fortsatte driften uten isolering, mens det n\u00e5 vil f\u00f8re til en kr\u00e6sje.\n<li class=\"l\"> N\u00e5r du bruker alternativet &#171;sshd -G&#187; i konfigurasjonsdumpen, blir direktivene n\u00e5 skrevet med b\u00e5de store og sm\u00e5 bokstaver, i stedet for bare sm\u00e5 bokstaver (f.eks. &#171;PubkeyAuthentication&#187; i stedet for &#171;pubkeyauthentication&#187;).\n<li class=\"l\"> Atferden til ssh og sshd har blitt tilpasset standarden RFC 4253: sending av meldinger som ikke er relatert til n\u00f8kkelutvekslingen under gjenutvekslingen av n\u00f8kler vil n\u00e5 f\u00f8re til at tilkoblingen avsluttes. Tidligere kunne angripere utf\u00f8re DoS-angrep ved uendelig \u00e5 sende utenforst\u00e5ende meldinger under n\u00f8kkelutvekslingen, som ble buffret p\u00e5 <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/no\/server\/dts-dronten\/\" title=\"serveren\" data-wpil-keyword-link=\"linked\">serveren<\/a> og brukte minne.            <\/ul>\n<p>Flere sikkerhetsproblemer er blitt l\u00f8st:  <\/p>\n<ul>\n<li class=\"l\"> Potensielt minnetilgang etter frigj\u00f8ring (use-after-free) er blitt eliminert i ssh-verkt\u00f8yet n\u00e5r du henvender deg til skadelig <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/no\/server\/dts-shicago\/\" title=\"server\" data-wpil-keyword-link=\"linked\">server<\/a>. Problemet utnyttes gjennom endring av vertsn\u00f8kkelen under gjenutvekslingen av n\u00f8kler.\n<li class=\"l\"> En s\u00e5rbarhet i sftp som gj\u00f8r det mulig \u00e5 laste opp filer til en annen katalog n\u00e5r du kobler til en ondsinnet server ved \u00e5 bruke kommandoen i formen &#171;sftp host:\u2044path .&#187;.\n<li class=\"l\"> S\u00e5rbarhet i scp som tillater kopiering av filer mellom to eksterne <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/no\/server\/dts-dusseldorf\/\" title=\"servere\" data-wpil-keyword-link=\"linked\">servere<\/a>, der en er under angriperens kontroll, \u00e5 organisere filopptak i foreldremappen, som ligger et niv\u00e5 under m\u00e5lmappen.\n<li class=\"l\"> Problemet i sshd som oppst\u00e5r n\u00e5r den interne implementeringen av SFTP-serveren (&#171;internal-sftp&#187;) er aktivert, men som er deaktivert som standard, er l\u00f8st. Problemet er relatert til kutt av lange sekvenser i kommandolinjen etter det 9. argumentet, noe som f\u00f8rer til at p\u00e5f\u00f8lgende argumenter blir kastet. Dermed kan potensielt sikkerhetsrelaterte alternativer bli forkastet.\n<li class=\"l\"> En manglende implementering i sshd er l\u00f8st, der direktivet &#171;DisableForwarding=yes&#187; ikke deaktiverte muligheten for \u00e5 opprette tunneler tillatt av &#171;PermitTunnel=yes&#187; alternativet (som som standard ikke er satt).\n<li class=\"l\"> Problemet i sshd som kan brukes til \u00e5 initiere en tjeneste avbrudd f\u00f8r autentisering, ved \u00e5 aktivere direktivet GSSAPIAuthentication (som er deaktivert som standard) i innstillingene, er l\u00f8st. Problemet blokkeres ikke av grensen &#171;MaxAuthTries&#187;, men omfattes av restriksjonen &#171;PerSourcePenalties&#187;.\n<li class=\"l\"> I sshd er mindre feil rettet som gjorde at det ikke alltid ble lagt til minimal forsinkelse mellom autentiseringsfors\u00f8k.        <\/ul>\n<p>Kilde: <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 5.0.5 - 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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