{"id":38754,"date":"2019-10-31T22:25:45","date_gmt":"2019-10-31T19:25:45","guid":{"rendered":"https:\/\/prohoster.info\/blog\/reliz-openssh-8-1\/"},"modified":"2019-10-31T22:25:45","modified_gmt":"2019-10-31T19:25:45","slug":"reliz-openssh-8-1","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/news\/reliz-openssh-8-1","title":{"rendered":"Lansarea OpenSSH 8.1","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Dup\u0103 \u0219ase luni de dezvoltare <noindex><a rel=\"nofollow\" href=\"http:\/\/lists.mindrot.org\/pipermail\/openssh-unix-dev\/2019-October\/037966.html\">la sf\u00e2r\u0219itul anului 2019. Pe l\u00e2ng\u0103 protocoalele ActivityPub \u0219i diaspora, Hubzilla se federeaz\u0103 \u00een cadrul re\u021belei prin propriul s\u0103u protocol<\/a><\/noindex> lansare <noindex><a rel=\"nofollow\" href=\"http:\/\/www.openssh.com\/\">OpenSSH 8.1<\/a><\/noindex>, o implementare deschis\u0103 a clientului \u0219i serverului pentru func\u021bionarea pe protocoalele SSH 2.0 \u0219i SFTP. <\/p>\n<p>O aten\u021bie deosebit\u0103 \u00een noul release este acordat\u0103 remedi\u0103rii unei vulnerabilit\u0103\u021bi care afecteaz\u0103 ssh, sshd, ssh-add \u0219i ssh-keygen. Problema este prezent\u0103 \u00een codul de parsare a cheilor private de tip XMSS \u0219i permite unui atacator s\u0103 ini\u021bieze o suprascriere a valorii \u00eentregi. Vulnerabilitatea este marcata ca exploatabil\u0103, dar rar aplicat\u0103, deoarece suportul pentru cheile XMSS este considerat op\u021biuni experimentale, dezactivate implicit (\u00een versiunea portabil\u0103 \u00een autoconf nu este prev\u0103zut\u0103 o op\u021biune de compilare pentru activarea XMSS).<\/p>\n<p>Modific\u0103ri principale: <\/p>\n<ul>\n<li class=\"l\"> \u00cen ssh, sshd \u0219i ssh-agent <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=50929\">ad\u0103ugat<\/a><\/noindex> codul \u00eempiedic\u0103 restaurarea cheii private, care se afl\u0103 \u00een memoria RAM, ca urmare a atacurilor prin canale laterale, cum ar fi <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=47856\">Spectre, Meltdown<\/a><\/noindex>, <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=41340\">RowHammer<\/a><\/noindex> \u0219i <noindex><a rel=\"nofollow\" href=\"https:\/\/rambleed.com\/\">RAMBleed<\/a><\/noindex>. Cheile private sunt acum criptate la \u00eenc\u0103rcarea \u00een memorie \u0219i decriptate doar \u00een momentele de utilizare, r\u0103m\u00e2n\u00e2nd criptate \u00een rest. Cu o astfel de abordare, pentru a reu\u0219i s\u0103 restaureze cheia privat\u0103, un atacator trebuie s\u0103 recupereze anterior o cheie intermediar\u0103, generat\u0103 aleator, de 16 KB, folosit\u0103 pentru criptarea cheii principale, ceea ce este pu\u021bin probabil av\u00e2nd \u00een vedere frecven\u021ba erorilor de recuperare specifice atacurilor moderne;\n<li class=\"l\"> \u00cen  <noindex><a rel=\"nofollow\" href=\"https:\/\/man.openbsd.org\/ssh-keygen.1\">ssh-keygen<\/a><\/noindex>  a fost ad\u0103ugat suport experimental pentru o schem\u0103 simplificat\u0103 de creare \u0219i validare a semn\u0103turilor digitale. Semn\u0103turile digitale pot fi create folosind chei SSH obi\u0219nuite, stocate pe disc sau \u00een ssh-agent, \u0219i validate utiliz\u00e2nd o list\u0103 similar\u0103 cu authorized_keys <noindex><a rel=\"nofollow\" href=\"https:\/\/man.openbsd.org\/ssh-keygen.1#ALLOWED_SIGNERS\">de chei permise<\/a><\/noindex>. \u00cen semn\u0103tura digital\u0103 este \u00eencorporat\u0103 informa\u021bia despre spa\u021biul de nume pentru a evita confuzia \u00een aplicarea \u00een diferite domenii (de exemplu, pentru email \u0219i fi\u0219iere);\n<li class=\"l\"> ssh-keygen este acum configurat implicit s\u0103 foloseasc\u0103 algoritmul rsa-sha2-512 pentru semnarea certificatului cu o semn\u0103tur\u0103 digital\u0103 bazat\u0103 pe cheia RSA (c\u00e2nd func\u021bioneaz\u0103 \u00een modul CA). Aceste certificate sunt incompatibile cu versiunile anterioare de OpenSSH 7.2 (pentru a asigura compatibilitatea, tipul algoritmului ar trebui s\u0103 fie redefinit, de exemplu, prin apelul \u201essh-keygen -t ssh-rsa -s \u2026\u201d);\n<li class=\"l\"> \u00cen ssh, expresia ProxyCommand sus\u021bine expansiunea substitutivului \u201e%n\u201d (numele gazdei specificat \u00een linia de adres\u0103);\n<li class=\"l\"> \u00cen listele de algoritmi de criptare pentru ssh \u0219i sshd, pentru a introduce algoritmii sugera\u021bi implicit, acum se poate folosi simbolul \u201e^\u201d. De exemplu, pentru a ad\u0103uga ssh-ed25519 la lista implicit\u0103, se poate specifica \u201eHostKeyAlgorithms ^ssh-ed25519\u201d;\n<li class=\"l\"> \u00cen ssh-keygen, comentariul ata\u0219at cheii este acum afi\u0219at atunci c\u00e2nd se extrage cheia public\u0103 din cea privat\u0103;\n<li class=\"l\"> \u00cen ssh-keygen a fost ad\u0103ugat\u0103 op\u021biunea de a folosi flagul \u201e-v\u201d \u00een timpul opera\u021biunilor de c\u0103utare a cheilor (de exemplu, \u201essh-keygen -vF host\u201d), specificarea acestuia rezult\u00e2nd \u00een afi\u0219area unei semn\u0103turi vizuale a gazdei;\n<li class=\"l\"> A fost ad\u0103ugat\u0103 posibilitatea de a folosi <noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/PKCS_8\">PKCS8<\/a><\/noindex> ca format alternativ pentru stocarea cheilor private pe disc. Formatul PEM continu\u0103 s\u0103 fie utilizat implicit, iar PKCS8 poate fi util pentru compatibilitatea cu aplica\u021bii ter\u021be.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Sursa: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51640\">opennet.ro<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 \u0448\u0435\u0441\u0442\u0438 \u043c\u0435\u0441\u044f\u0446\u0435\u0432 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0440\u0435\u043b\u0438\u0437 OpenSSH 8.1, \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\u0442\u0434\u0435\u043b\u044c\u043d\u043e\u0433\u043e \u0432\u043d\u0438\u043c\u0430\u043d\u0438\u044f \u0432 \u043d\u043e\u0432\u043e\u043c \u0432\u044b\u043f\u0443\u0441\u043a\u0435 \u0437\u0430\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u0435\u0442 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438, \u0437\u0430\u0442\u0440\u0430\u0433\u0438\u0432\u0430\u044e\u0449\u0435\u0439 ssh, sshd, ssh-add \u0438 ssh-keygen. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043f\u0440\u0438\u0441\u0443\u0442\u0441\u0442\u0432\u0443\u0435\u0442 \u0432 \u043a\u043e\u0434\u0435 \u043f\u0430\u0440\u0441\u0438\u043d\u0433\u0430 \u0437\u0430\u043a\u0440\u044b\u0442\u044b\u0445 \u043a\u043b\u044e\u0447\u0435\u0439 \u0441 \u0442\u0438\u043f\u043e\u043c XMSS \u0438 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0435\u043c\u0443 \u0438\u043d\u0438\u0446\u0438\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0446\u0435\u043b\u043e\u0447\u0438\u0441\u043b\u0435\u043d\u043d\u043e\u0435 \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043e\u0442\u043c\u0435\u0447\u0435\u043d\u0430 \u043a\u0430\u043a \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0438\u0440\u0443\u0435\u043c\u0430\u044f, [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-38754","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u043e\u0441\u043b\u0435 \u0448\u0435\u0441\u0442\u0438 \u043c\u0435\u0441\u044f\u0446\u0435\u0432 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0440\u0435\u043b\u0438\u0437\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/ro\/blog\/news\/reliz-openssh-8-1\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.2.1\" \/>\n\t\t<meta property=\"og:locale\" content=\"ro_RO\" \/>\n\t\t<meta property=\"og:site_name\" content=\"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\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"\ud83e\udd47\u0420\u0435\u043b\u0438\u0437 OpenSSH 8.1 | ProHoster\" \/>\n\t\t<meta property=\"og:description\" content=\"\u041f\u043e\u0441\u043b\u0435 \u0448\u0435\u0441\u0442\u0438 \u043c\u0435\u0441\u044f\u0446\u0435\u0432 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0440\u0435\u043b\u0438\u0437\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/prohoster.info\/ro\/blog\/news\/reliz-openssh-8-1\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:width\" content=\"350\" \/>\n\t\t<meta property=\"og:image:height\" content=\"350\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2019-10-31T19:25:45+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2019-10-31T19:25:45+00:00\" \/>\n\t\t<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"\ud83e\udd47Lansare OpenSSH 8.1 | ProHoster","description":"Dup\u0103 \u0219ase luni de dezvoltare, a fost lansat\u0103 versiunea","canonical_url":"https:\/\/prohoster.info\/ro\/blog\/news\/reliz-openssh-8-1","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"ro_RO","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\u0420\u0435\u043b\u0438\u0437 OpenSSH 8.1 | ProHoster","og:description":"\u041f\u043e\u0441\u043b\u0435 \u0448\u0435\u0441\u0442\u0438 \u043c\u0435\u0441\u044f\u0446\u0435\u0432 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0440\u0435\u043b\u0438\u0437","og:url":"https:\/\/prohoster.info\/ro\/blog\/news\/reliz-openssh-8-1","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":"2019-10-31T19:25:45+00:00","article:modified_time":"2019-10-31T19:25:45+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"38754","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":null,"schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":"2026-01-23 23:17:20","breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2021-03-01 01:04:29","updated":"2026-01-23 23:17:20","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/posts\/38754","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/comments?post=38754"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/posts\/38754\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/media?parent=38754"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/categories?post=38754"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/tags?post=38754"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}