{"id":91998,"date":"2020-08-21T13:42:04","date_gmt":"2020-08-21T11:42:04","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/obnovlenie-dns-servera-bind-9-11-22-9-16-6-9-17-4-s-ustraneniem-5-uyazvimostej"},"modified":"2020-08-21T13:42:04","modified_gmt":"2020-08-21T11:42:04","slug":"obnovlenie-dns-servera-bind-9-11-22-9-16-6-9-17-4-s-ustraneniem-5-uyazvimostej","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/news\/obnovlenie-dns-servera-bind-9-11-22-9-16-6-9-17-4-s-ustraneniem-5-uyazvimostej","title":{"rendered":"F\u00f6retaget Microsoft har meddelat om tillhandah\u00e5llande av st\u00f6d.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex><a rel=\"nofollow\" href=\"https:\/\/www.mail-archive.com\/bind-announce@lists.isc.org\/msg00579.html\">Publicerade<\/a><\/noindex> Korrigerande uppdateringar av de stabila versionerna av DNS-servern BIND 9.11.22 och 9.16.6, samt den experimentella versionen 9.17.4 under utveckling. De nya versionerna \u00e5tg\u00e4rdar 5 s\u00e5rbarheter. Den mest kritiska s\u00e5rbarheten (<noindex><a rel=\"nofollow\" href=\"https:\/\/kb.isc.org\/docs\/cve-2020-8620\">CVE-2020-8620<\/a><\/noindex>) <noindex><a rel=\"nofollow\" href=\"https:\/\/blog.talosintelligence.com\/2020\/08\/vuln-spotlight-ISC-BIND-aug-2020.html\">m\u00f6jligg\u00f6r<\/a><\/noindex> kan fj\u00e4rrutl\u00f6sa en tj\u00e4nsteavbrott genom att skicka en specifik upps\u00e4ttning paket till TCP-porten d\u00e4r BIND accepterar anslutningar. Att skicka onormalt stora AXFR-f\u00f6rfr\u00e5gningar till TCP-porten, <noindex><a rel=\"nofollow\" href=\"https:\/\/talosintelligence.com\/vulnerability_reports\/TALOS-2020-1100\">kan leda<\/a><\/noindex> kan leda till att det bibliotek som hanterar TCP-anslutningar, libuv, vidarebefordrar en storlek till servern som utl\u00f6ser en assertionskontroll och avslutar processen.<\/p>\n<p>\u00d6vriga s\u00e5rbarheter:<\/p>\n<ul>\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/kb.isc.org\/docs\/cve-2020-8621\">CVE-2020-8621<\/a><\/noindex> \u2013 en angripare kan initiera utl\u00f6sning av assertionskontrollen och en akut avslutning av resolvern vid ett f\u00f6rs\u00f6k att minimera QNAME efter att ha omdirigerat beg\u00e4ran. Problemet uppst\u00e5r endast p\u00e5 servrar med QNAME-minimering aktiverad, som k\u00f6rs i l\u00e4get 'forward first'.\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/kb.isc.org\/docs\/cve-2020-8622\">CVE-2020-8622<\/a><\/noindex> \u2013 en angripare kan initiera utl\u00f6sning av assertionskontrollen och en akut avslutning av arbetsprocessen om DNS-servern som angriparen kontrollerar returnerar felaktiga svar med TSIG-signatur som svar p\u00e5 beg\u00e4ran fr\u00e5n offer-DNS-servern.\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/kb.isc.org\/docs\/cve-2020-8623\">CVE-2020-8623<\/a><\/noindex> \u2013 en angripare kan initiera utl\u00f6sning av assertionskontrollen och en akut avslutning av hanteraren genom att skicka specialdesignade zonf\u00f6rfr\u00e5gningar som \u00e4r signerade med RSA-nyckeln. Problemet uppst\u00e5r endast vid byggnation av servern med alternativet '\u2013enable-native-pkcs11'.\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/kb.isc.org\/docs\/cve-2020-8624\">CVE-2020-8624<\/a><\/noindex> \u2013 en angripare som har beh\u00f6righet att \u00e4ndra inneh\u00e5llet i vissa f\u00e4lt i DNS-zoner kan f\u00e5 ytterligare privilegier f\u00f6r att \u00e4ndra annat inneh\u00e5ll i DNS-zonen.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>K\u00e4lla: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53577\">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 9.11.22 \u0438 9.16.6, \u0430 \u0442\u0430\u043a\u0436\u0435 \u043d\u0430\u0445\u043e\u0434\u044f\u0449\u0435\u0439\u0441\u044f \u0432 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430\u043b\u044c\u043d\u043e\u0439 \u0432\u0435\u0442\u043a\u0438 9.17.4. \u0412 \u043d\u043e\u0432\u044b\u0445 \u0432\u044b\u043f\u0443\u0441\u043a\u0430\u0445 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u043e 5 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439. \u041d\u0430\u0438\u0431\u043e\u043b\u0435\u0435 \u043e\u043f\u0430\u0441\u043d\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2020-8620) \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438 \u0447\u0435\u0440\u0435\u0437 \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0443 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u043e\u0433\u043e \u043d\u0430\u0431\u043e\u0440\u0430 \u043f\u0430\u043a\u0435\u0442\u043e\u0432 \u043d\u0430 TCP-\u043f\u043e\u0440\u0442, \u043d\u0430 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u043f\u0440\u0438\u043d\u0438\u043c\u0430\u0435\u0442 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u044f BIND. \u041e\u0442\u043f\u0440\u0430\u0432\u043a\u0430 \u043d\u0430 TCP-\u043f\u043e\u0440\u0442 \u0430\u043d\u043e\u043c\u0430\u043b\u044c\u043d\u043e \u0431\u043e\u043b\u044c\u0448\u0438\u0445 \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432 AXFR, \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\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-91998","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\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 9.11.22 \u0438 9.16.6, \u0430.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" 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