{"id":889,"date":"2019-10-02T13:37:52","date_gmt":"2019-10-02T12:37:52","guid":{"rendered":"https:\/\/www.nameshield.com\/en\/?page_id=889"},"modified":"2022-12-27T16:24:16","modified_gmt":"2022-12-27T15:24:16","slug":"dns-cache-poisoning","status":"publish","type":"page","link":"https:\/\/www.nameshield.com\/en\/glossary\/dns-cache-poisoning\/","title":{"rendered":"DNS Cache poisoning"},"content":{"rendered":"\n

What\u2019s the DNS Cache Poisoning<\/em>?<\/h1>\n\n\n\n

The DNS cache poi\u00adson\u00ading<\/em><\/strong> or DNS cache pol\u00adlu\u00adtion is a tech\u00adnique allow\u00ading to deceive the DNS <\/a>servers in order to get them to believe that they receive a valid answer to a request they do, while it is fraud\u00adu\u00adlent.<\/p>\n\n\n\n

To car\u00adry out a DNS cache poi\u00adson\u00ading<\/em><\/strong> attack, the attack\u00ader exploits the DNS server\u2019s vul\u00adner\u00ada\u00adbil\u00adi\u00adty which then accepts the incor\u00adrect infor\u00adma\u00adtion. If the serv\u00ader doesn\u2019t val\u00adi\u00addate the received infor\u00adma\u00adtion, and doesn\u2019t check that it comes from a reli\u00adable source, then it will stock these wrong infor\u00adma\u00adtion in its cache. After\u00adwards, it will trans\u00admit it to the users who exe\u00adcute the request aimed by the attack.<\/p>\n\n\n\n

This kind of attack by DNS cache poi\u00adson\u00ading<\/em><\/strong>, allows for exam\u00adple, to send a user towards a fake web\u00adsite, the con\u00adtent of which can serve to phish\u00ading or as virus vec\u00adtor or oth\u00ader mali\u00adcious appli\u00adca\u00adtions. A com\u00adput\u00ader present on the Inter\u00adnet uses nor\u00admal\u00adly a DNS serv\u00ader man\u00adaged by the Inter\u00adnet ser\u00advices provider. This DNS serv\u00ader is most of the time lim\u00adit\u00aded to the ser\u00advices provider\u2019s net\u00adwork users only and its cache con\u00adtains a part of the infor\u00adma\u00adtion col\u00adlect\u00aded in the past. An attack by poi\u00adson\u00ading on only one DNS serv\u00ader of the ser\u00advices provider can affect all its users, either direct\u00adly or indi\u00adrect\u00adly if the slaves\u2019 servers spread the infor\u00adma\u00adtion.<\/p>\n\n\n\n

For more infor\u00adma\u00adtion on attacks tar\u00adget\u00ading the DNS, please vis\u00adit Nameshield\u2019s blog and read the arti\u00adcle The 3 most com\u00admon DNS attacks and how to defeat them<\/a>.<\/em><\/p>\n\n\n\n

Source: Nameshield\u2019s White paper \u2013 Under\u00adstand\u00ading domain names<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

What\u2019s the DNS Cache Poi\u00adson\u00ading? The DNS cache poi\u00adson\u00ading or DNS cache pol\u00adlu\u00adtion is a tech\u00adnique allow\u00ading to deceive the DNS servers in order to get them to believe that they receive a valid answer to a request they do, while it is fraud\u00adu\u00adlent. To car\u00adry out a DNS cache poi\u00adson\u00ading attack, the attack\u00ader exploits\u2026 Read More \u00bbDNS Cache poi\u00adson\u00ading<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":861,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"wp_typography_post_enhancements_disabled":false,"editor_plus_copied_stylings":"{}","_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"class_list":["post-889","page","type-page","status-publish","hentry"],"yoast_head":"\nWhat\u2019s the DNS Cache Poisoning? - Nameshield's Glossary<\/title>\n<meta name=\"description\" content=\"What\u2019s the DNS Cache Poisoning? 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