{"id":98911,"date":"2021-01-21T14:42:14","date_gmt":"2021-01-21T12:42:14","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/dnspooq-sem-novyh-uyazvimostej-v-dnsmasq"},"modified":"2021-01-21T14:42:14","modified_gmt":"2021-01-21T12:42:14","slug":"dnspooq-sem-novyh-uyazvimostej-v-dnsmasq","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/dnspooq-sem-novyh-uyazvimostej-v-dnsmasq","title":{"rendered":"DNSpooq - sette nuove vulnerabilit\u00e0 in dnsmasq","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Gli specialisti dei laboratori di ricerca JSOF hanno segnalato sette nuove vulnerabilit\u00e0 nel server DNS\/DHCP dnsmasq. Il server dnsmasq \u00e8 molto popolare ed \u00e8 utilizzato di default in molte distribuzioni Linux, cos\u00ec come in dispositivi di rete di Cisco, Ubiquiti e altri. Le vulnerabilit\u00e0 Dnspooq includono l'avvelenamento della cache DNS e l'esecuzione remota di codice. Le vulnerabilit\u00e0 sono state corrette in dnsmasq 2.83.<\/p>\n<p>Nel 2008, il noto ricercatore di sicurezza Dan Kaminsky scopr\u00ec e rivel\u00f2 un difetto fondamentale nel meccanismo DNS di Internet. Kaminsky dimostr\u00f2 che i malintenzionati potevano sostituire indirizzi <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/it\/domain\/\"   title=\"dei domini\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3158\">dei domini<\/a> \u0438 \u043a\u0440\u0430\u0441\u0442\u044c \u0434\u0430\u043d\u043d\u044b\u0435. \u0421 \u0442\u0435\u0445 \u043f\u043e\u0440 \u044d\u0442\u043e \u0441\u0442\u0430\u043b\u043e \u0438\u0437\u0432\u0435\u0441\u0442\u043d\u043e \u043a\u0430\u043a &laquo;\u0410\u0442\u0430\u043a\u0430 \u041a\u0430\u043c\u0438\u043d\u0441\u043a\u043e\u0433\u043e&raquo;.<\/p>\n<p>Il DNS \u00e8 considerato un protocollo insicuro da decenni, anche se si presume che garantisca un certo livello di integrit\u00e0. \u00c8 proprio per questo motivo che continua a essere molto utilizzato. Tuttavia, sono stati sviluppati meccanismi per aumentare la sicurezza del protocollo DNS originale. Questi meccanismi includono HTTPS, HSTS, DNSSEC e altre iniziative. Tuttavia, anche con tutti questi meccanismi, l'intercettazione del DNS rimane un attacco pericoloso nel 2021. La maggior parte di Internet si basa ancora sul DNS cos\u00ec come nel 2008 ed \u00e8 vulnerabile a attacchi dello stesso tipo.<\/p>\n<p>Vulnerabilit\u00e0 di avvelenamento della cache DNSpooq:<br \/>\nCVE-2020-25686, CVE-2020-25684, CVE-2020-25685. Queste vulnerabilit\u00e0 sono simili agli attacchi SAD DNS, di cui hanno recentemente riferito i ricercatori dell'Universit\u00e0 della California e dell'Universit\u00e0 Tsinghua. Le vulnerabilit\u00e0 SAD DNS e DNSpooq possono anche essere combinate per facilitare ulteriormente gli attacchi. Sono state segnalate anche ulteriori attacchi con conseguenze incerte attraverso sforzi congiunti delle universit\u00e0 (Poison Over Troubled Forwarders e altro).<br \/>\nLe vulnerabilit\u00e0 funzionano riducendo l'entropia. A causa dell'uso di un hash debole per identificare le richieste DNS e della corrispondenza imprecisa tra richiesta e risposta, l'entropia pu\u00f2 essere significativamente ridotta, rendendo necessario indovinare solo ~19 bit, il che rende possibile l'avvelenamento della cache. Il modo in cui dnsmasq gestisce i record CNAME consente di falsificare la catena dei record CNAME e avvelenare efficacemente fino a 9 record DNS contemporaneamente.<\/p>\n<p>Vulnerabilit\u00e0 di overflow del buffer: CVE-2020-25687, CVE-2020-25683, CVE-2020-25682, CVE-2020-25681. Tutte e quattro le vulnerabilit\u00e0 segnalate sono presenti nel codice con implementazione DNSSEC e si manifestano solo quando la verifica tramite DNSSEC \u00e8 abilitata nelle impostazioni.<\/p>\n<p>Fonte: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"http:\/\/www.linux.org.ru\/news\/security\/16121275\">linux.org.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043f\u0435\u0446\u0438\u0430\u043b\u0438\u0441\u0442\u044b \u0438\u0437 JSOF research labs \u0441\u043e\u043e\u0431\u0449\u0438\u043b\u0438 \u043e \u0441\u0435\u043c\u0438 \u043d\u043e\u0432\u044b\u0445 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044f\u0445 \u0432 DNS\/DHCP \u0441\u0435\u0440\u0432\u0435\u0440\u0435 dnsmasq. \u0421\u0435\u0440\u0432\u0435\u0440 dnsmasq \u0432\u0435\u0441\u044c\u043c\u0430 \u043f\u043e\u043f\u0443\u043b\u044f\u0440\u0435\u043d \u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u0432\u043e \u043c\u043d\u043e\u0433\u0438\u0445 \u0434\u0438\u0441\u0442\u0440\u0438\u0431\u0443\u0442\u0438\u0432\u0430\u0445 linux, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0432 \u0441\u0435\u0442\u0435\u0432\u043e\u043c \u043e\u0431\u043e\u0440\u0443\u0434\u043e\u0432\u0430\u043d\u0438\u0438 Cisco, Ubiquiti \u0438 \u043f\u0440\u043e\u0447\u0438\u0445. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 Dnspooq \u0432\u043a\u043b\u044e\u0447\u0430\u044e\u0442 \u0432 \u0441\u0435\u0431\u044f \u043e\u0442\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435 DNS-\u043a\u044d\u0448\u0430, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0443\u0434\u0430\u043b\u0435\u043d\u043d\u043e\u0435 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u043a\u043e\u0434\u0430. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u044b \u0432 dnsmasq 2.83. \u0412 2008 \u0433\u043e\u0434\u0443 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-98911","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0421\u043f\u0435\u0446\u0438\u0430\u043b\u0438\u0441\u0442\u044b \u0438\u0437 JSOF research labs \u0441\u043e\u043e\u0431\u0449\u0438\u043b\u0438 \u043e \u0441\u0435\u043c\u0438 \u043d\u043e\u0432\u044b\u0445 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044f\u0445 \u0432 DNS\/DHCP \u0441\u0435\u0440\u0432\u0435\u0440\u0435 dnsmasq.\" \/>\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\/it\/blog\/news\/dnspooq-sem-novyh-uyazvimostej-v-dnsmasq\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.1.1\" \/>\n\t\t<meta property=\"og:locale\" content=\"it_IT\" \/>\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\udd47DNSpooq \u2014 \u0441\u0435\u043c\u044c \u043d\u043e\u0432\u044b\u0445 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 \u0432 dnsmasq | ProHoster\" \/>\n\t\t<meta property=\"og:description\" content=\"\u0421\u043f\u0435\u0446\u0438\u0430\u043b\u0438\u0441\u0442\u044b \u0438\u0437 JSOF research labs \u0441\u043e\u043e\u0431\u0449\u0438\u043b\u0438 \u043e \u0441\u0435\u043c\u0438 \u043d\u043e\u0432\u044b\u0445 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044f\u0445 \u0432 DNS\/DHCP \u0441\u0435\u0440\u0432\u0435\u0440\u0435 dnsmasq.\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/prohoster.info\/it\/blog\/news\/dnspooq-sem-novyh-uyazvimostej-v-dnsmasq\" \/>\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=\"2021-01-21T12:42:14+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2021-01-21T12:42:14+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\udd47DNSpooq \u2014 sette nuove vulnerabilit\u00e0 in dnsmasq | ProHoster","description":"Gli esperti dei laboratori di ricerca JSOF hanno segnalato sette nuove vulnerabilit\u00e0 nel server DNS\/DHCP dnsmasq.","canonical_url":"https:\/\/prohoster.info\/it\/blog\/news\/dnspooq-sem-novyh-uyazvimostej-v-dnsmasq","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"it_IT","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\udd47DNSpooq \u2014 \u0441\u0435\u043c\u044c \u043d\u043e\u0432\u044b\u0445 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 \u0432 dnsmasq | ProHoster","og:description":"\u0421\u043f\u0435\u0446\u0438\u0430\u043b\u0438\u0441\u0442\u044b \u0438\u0437 JSOF research labs \u0441\u043e\u043e\u0431\u0449\u0438\u043b\u0438 \u043e \u0441\u0435\u043c\u0438 \u043d\u043e\u0432\u044b\u0445 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044f\u0445 \u0432 DNS\/DHCP \u0441\u0435\u0440\u0432\u0435\u0440\u0435 dnsmasq.","og:url":"https:\/\/prohoster.info\/it\/blog\/news\/dnspooq-sem-novyh-uyazvimostej-v-dnsmasq","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":"2021-01-21T12:42:14+00:00","article:modified_time":"2021-01-21T12:42:14+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"98911","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":null,"breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2021-02-28 09:57:26","updated":"2026-02-11 11:12:04","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/posts\/98911","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/comments?post=98911"}],"version-history":[{"count":1,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/posts\/98911\/revisions"}],"predecessor-version":[{"id":160551,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/posts\/98911\/revisions\/160551"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/media?parent=98911"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/categories?post=98911"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/tags?post=98911"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}