{"id":103567,"date":"2022-03-19T09:36:48","date_gmt":"2022-03-19T07:36:48","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/obnovlenie-dns-servera-bind-9-11-37-9-16-27-i-9-18-1-c-ustraneniem-4-uyazvimostej"},"modified":"2022-03-19T09:36:48","modified_gmt":"2022-03-19T07:36:48","slug":"obnovlenie-dns-servera-bind-9-11-37-9-16-27-i-9-18-1-c-ustraneniem-4-uyazvimostej","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/news\/obnovlenie-dns-servera-bind-9-11-37-9-16-27-i-9-18-1-c-ustraneniem-4-uyazvimostej","title":{"rendered":"Uppdatering av DNS-server BIND 9.11.37, 9.16.27 och 9.18.1 med \u00e5tg\u00e4rd av 4 s\u00e5rbarheter","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Korrigeringar har publicerats f\u00f6r stabila versioner av DNS-servern BIND 9.11.37, 9.16.27 och 9.18.1, som \u00e5tg\u00e4rdar fyra s\u00e5rbarheter:    <\/p>\n<ul>\n<li class=\"l\"> CVE-2021-25220 \u2014 m\u00f6jlighet f\u00f6r ins\u00e4ttning av felaktiga NS-poster i DNS-serverns cache (cachef\u00f6rgiftning), vilket kan leda till att fel DNS-servrar kontaktas som ger falsk information. Problemet uppst\u00e5r i resolverar som arbetar i l\u00e4gena \u201eforward first\u201d (standard) eller \u201eforward only\u201d, under f\u00f6ruts\u00e4ttning att en av forwarderna har komprometterats (NS-poster som mottas fr\u00e5n forwardern lagras i cachen och kan sedan leda till att fel DNS-server kontaktas vid rekursiva f\u00f6rfr\u00e5gningar).\n<li class=\"l\"> CVE-2022-0396 \u2014 \u00f6verbelastning (o\u00e4ndlig h\u00e4ngning av anslutningar i tillst\u00e5ndet CLOSE_WAIT), initierad genom att skicka speciellt formaterade TCP-paket. Problemet uppst\u00e5r endast n\u00e4r inst\u00e4llningen keep-response-order \u00e4r aktiverad, vilket inte \u00e4r standard, samt n\u00e4r alternativet keep-response-order specificeras i ACL.\n<li class=\"l\"> CVE-2022-0635 \u2014 m\u00f6jlighet f\u00f6r att processen named att krascha genom att skicka vissa f\u00f6rfr\u00e5gningar till <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/sv\/server\/dts-shicago\/\"   title=\"servern\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2907\">servern<\/a>. Problemet uppst\u00e5r vid anv\u00e4ndning av cachen f\u00f6r verifierade DNSSEC-f\u00f6rfr\u00e5gningar (DNSSEC-Validated Cache), som \u00e4r aktiverad som standard i version 9.18 (inst\u00e4llningarna dnssec-validation och synth-from-dnssec).\n<li class=\"l\"> CVE-2022-0667 \u2014 m\u00f6jlighet f\u00f6r att processen named att krascha vid hantering av f\u00f6rdr\u00f6jda DS-f\u00f6rfr\u00e5gningar. Problemet uppst\u00e5r endast i BIND 9.18-branch och orsakas av en bugg som intr\u00e4ffade vid omarbetningen av klientkoden f\u00f6r rekursiv hantering av f\u00f6rfr\u00e5gningar.    <\/ul>\n<p>K\u00e4lla: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=56879\">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\u044b \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u0441\u0442\u0430\u0431\u0438\u043b\u044c\u043d\u044b\u0445 \u0432\u0435\u0442\u043e\u043a DNS-\u0441\u0435\u0440\u0432\u0435\u0440\u0430 BIND 9.11.37, 9.16.27 \u0438 9.18.1, \u0432 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b \u0447\u0435\u0442\u044b\u0440\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438: CVE-2021-25220 &#8212; \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043f\u043e\u0434\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0438 \u043d\u0435\u043a\u043e\u0440\u0440\u0435\u043a\u0442\u043d\u044b\u0445 NS-\u0437\u0430\u043f\u0438\u0441\u0435\u0439 \u0432 \u043a\u044d\u0448 DNS-\u0441\u0435\u0440\u0432\u0435\u0440\u0430 (\u043e\u0442\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u043a\u044d\u0448\u0430), \u0447\u0442\u043e \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a \u043e\u0431\u0440\u0430\u0449\u0435\u043d\u0438\u044e \u043a \u043d\u0435\u0432\u0435\u0440\u043d\u044b\u043c DNS-\u0441\u0435\u0440\u0432\u0435\u0440\u0430\u043c, \u043e\u0442\u0434\u0430\u044e\u0449\u0438\u043c \u043b\u043e\u0436\u043d\u044b\u0435 \u0441\u0432\u0435\u0434\u0435\u043d\u0438\u044f. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0432 \u0440\u0435\u0437\u043e\u043b\u0432\u0435\u0440\u0430\u0445, \u0440\u0430\u0431\u043e\u0442\u0430\u044e\u0449\u0438\u0445 \u0432 \u0440\u0435\u0436\u0438\u043c\u0430\u0445 &#171;forward first&#187; (\u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e) \u0438\u043b\u0438 &#171;forward only&#187;, \u0432 \u0443\u0441\u043b\u043e\u0432\u0438\u0438 \u043a\u043e\u043c\u043f\u0440\u043e\u043c\u0435\u0442\u0430\u0446\u0438\u0438 [&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-103567","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - 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