{"id":35485,"date":"2019-10-31T22:04:36","date_gmt":"2019-10-31T19:04:36","guid":{"rendered":"https:\/\/prohoster.info\/blog\/obnovlenie-dns-servera-bind-9-14-3-9-11-8-9-15-1-s-ustraneniem-dos-uyazvimosti\/"},"modified":"2019-10-31T22:04:36","modified_gmt":"2019-10-31T19:04:36","slug":"obnovlenie-dns-servera-bind-9-14-3-9-11-8-9-15-1-s-ustraneniem-dos-uyazvimosti","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/news\/obnovlenie-dns-servera-bind-9-14-3-9-11-8-9-15-1-s-ustraneniem-dos-uyazvimosti","title":{"rendered":"Actualizarea serverului DNS BIND 9.14.3, 9.11.8, 9.15.1 cu remedierea vulnerabilit\u0103\u021bii DoS","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\/msg00547.html\">Publicate<\/a><\/noindex> Actualiz\u0103rile corective ale ramurilor stabile ale serverului DNS BIND 9.14.3, 9.11.8 \u0219i 9.12.4-P2, precum \u0219i a ramurii experimentale \u00een dezvoltare 9.15.1. De asemenea, a fost anun\u021bat\u0103 \u00eentreruperea suportului pentru ramura 9.12, pentru care nu se vor mai lansa actualiz\u0103ri. <\/p>\n<p>Actualiz\u0103rile se remarc\u0103 prin eliminarea <noindex><a rel=\"nofollow\" href=\"https:\/\/kb.isc.org\/docs\/cve-2019-6471\">vulnerabilit\u0103\u021bi<\/a><\/noindex> (<noindex><a rel=\"nofollow\" href=\"https:\/\/security-tracker.debian.org\/tracker\/CVE-2019-6471\">CVE-2019-6471<\/a><\/noindex>), care permite provocarea unui atac de tip DoS (\u00eenchiderea procesului cu aser\u021biunea REQUIRE). Problema este cauzat\u0103 de o stare de concuren\u021b\u0103 (race condition) care apare la procesarea unui num\u0103r foarte mare de pachete de intrare formate special, care se adreseaz\u0103 filtrului de blocare. Pentru exploatarea vulnerabilit\u0103\u021bii, atacatorul trebuie s\u0103 trimit\u0103 rezolvatorului victimei un num\u0103r mare de solicit\u0103ri, care conduc la apelarea serverului DNS al atacatorului, care returneaz\u0103 r\u0103spunsuri incorecte.<\/p>\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=50910\">opennet.ro<\/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 9.14.3, 9.11.8 \u0438 9.12.4-P2, \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 9.15.1. \u041e\u0434\u043d\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u043e \u043e\u0431\u044a\u044f\u0432\u043b\u0435\u043d\u043e \u043e \u043f\u0440\u0435\u043a\u0440\u0430\u0449\u0435\u043d\u0438\u0438 \u0434\u0430\u043b\u044c\u043d\u0435\u0439\u0448\u0435\u0439 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438 \u0432\u0435\u0442\u043a\u0438 9.12, \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u0434\u043b\u044f \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u0431\u043e\u043b\u044c\u0448\u0435 \u0432\u044b\u043f\u0443\u0441\u043a\u0430\u0442\u044c\u0441\u044f \u043d\u0435 \u0431\u0443\u0434\u0443\u0442. \u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u043f\u0440\u0438\u043c\u0435\u0447\u0430\u0442\u0435\u043b\u044c\u043d\u044b \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0435\u043c \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 (CVE-2019-6471), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0439 \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 (\u0437\u0430\u0432\u0435\u0440\u0448\u0435\u043d\u0438\u0435 \u0440\u0430\u0431\u043e\u0442\u044b \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0430 \u0441 assertion REQUIRE). \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0432\u044b\u0437\u0432\u0430\u043d\u0430 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435\u043c \u0433\u043e\u043d\u043a\u0438 (race [&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-35485","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=\"\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 9.14.3, 9.11.8 \u0438.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" 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