{"id":3131,"date":"2021-04-15T19:40:00","date_gmt":"2021-04-15T17:40:00","guid":{"rendered":"https:\/\/fr.koddos.net\/blog\/?p=3131"},"modified":"2021-04-16T19:45:17","modified_gmt":"2021-04-16T17:45:17","slug":"le-fbi-supprime-les-portes-derobees-des-serveurs-microsoft-exchange-compromis","status":"publish","type":"post","link":"https:\/\/fr.koddos.net\/blog\/le-fbi-supprime-les-portes-derobees-des-serveurs-microsoft-exchange-compromis\/","title":{"rendered":"LE FBI SUPPRIME LES PORTES D\u00c9ROB\u00c9ES DES SERVEURS MICROSOFT EXCHANGE COMPROMIS"},"content":{"rendered":"\n<p>Les serveurs Microsoft Exchange ont \u00e9t\u00e9 cibl\u00e9s par les acteurs malveillants HAFNIUM au cours du mois dernier. En r\u00e9ponse \u00e0 cette vague d&rsquo;<strong><a href=\"https:\/\/blog.koddos.net\/uk-schools-are-subjects-of-intense-ransomware-attacks-warns-ncsc\/\">attaques<\/a><\/strong>, Microsoft a publi\u00e9 des correctifs hors bande et a averti les utilisateurs d&rsquo;appliquer les mises \u00e0 jour d\u00e8s que possible. Cependant, il semble que la menace ne soit pas encore termin\u00e9e apr\u00e8s que le conseiller \u00e0 la s\u00e9curit\u00e9 nationale (NSA), en collaboration avec Microsoft, ait <strong><a href=\"https:\/\/msrc.microsoft.com\/update-guide\/acknowledgement\/cve\">corrig\u00e9 quatre nouvelles vuln\u00e9rabilit\u00e9s<\/a><\/strong> dans le produit Exchange Server.<\/p>\n\n\n\n<p>Microsoft a annonc\u00e9 le dernier correctif alors qu&rsquo;il traitait plusieurs CVE. 19 correctifs ont \u00e9t\u00e9 qualifi\u00e9s de \u00ab\u00a0critiques\u00a0\u00bb. Cela porte \u00e0 329 le nombre de correctifs apport\u00e9s au serveur Exchange pour cette seule ann\u00e9e.<\/p>\n\n\n\n<p>Dans le m\u00eame ordre d&rsquo;id\u00e9es, un tribunal si\u00e9geant \u00e0 Houston a donn\u00e9 au FBI le pouvoir de supprimer les portes d\u00e9rob\u00e9es de plusieurs serveurs de messagerie Microsoft Exchange aux \u00c9tats-Unis. Cette d\u00e9cision intervient quelques mois apr\u00e8s que des acteurs malveillants ont exploit\u00e9 quatre vuln\u00e9rabilit\u00e9s d\u00e9couvertes pr\u00e9c\u00e9demment pour lancer des attaques sur des milliers de r\u00e9seaux. Selon le minist\u00e8re de la justice, l&rsquo;op\u00e9ration visant \u00e0 supprimer les portes d\u00e9rob\u00e9es a \u00e9t\u00e9 \u00ab\u00a0couronn\u00e9e de succ\u00e8s\u00a0\u00bb.<\/p>\n\n\n\n<p>Le mois dernier, Microsoft a d\u00e9clar\u00e9 avoir d\u00e9couvert Hafnium, un nouveau <strong><a href=\"https:\/\/blog.koddos.net\/researchers-caught-chinese-hacking-syndicate-bypassing-2fa\/\">groupe de hackers<\/a><\/strong> parrain\u00e9 par l&rsquo;\u00c9tat chinois, qui exploitait des serveurs d&rsquo;\u00e9change exploit\u00e9s depuis des r\u00e9seaux d&rsquo;entreprise.<\/p>\n\n\n\n<p><strong>Les serveurs d\u00e9j\u00e0 concern\u00e9s sont toujours vuln\u00e9rables<\/strong><\/p>\n\n\n\n<p>Les quatre vuln\u00e9rabilit\u00e9s \u00e9taient li\u00e9es entre elles, ce qui a permis aux acteurs malveillants d&rsquo;exploiter le serveur Exchange vuln\u00e9rable et d&rsquo;en voler le contenu. Bien que Microsoft ait fourni des correctifs pour les vuln\u00e9rabilit\u00e9s, les serveurs qui avaient d\u00e9j\u00e0 \u00e9t\u00e9 compromis par les hackers pouvaient encore \u00eatre exploit\u00e9s par ces derniers. Quelques jours plus tard, d&rsquo;autres acteurs malveillants ont commenc\u00e9 \u00e0 d\u00e9ployer des logiciels malveillants en s&rsquo;attaquant aux serveurs vuln\u00e9rables pr\u00e9sentant les m\u00eames failles.<\/p>\n\n\n\n<p>Satnam Narang, ing\u00e9nieur de recherche chez Tenable, a d\u00e9clar\u00e9 qu&rsquo;apr\u00e8s l&rsquo;exploitation dans la nature de ProxyLogon et d&rsquo;autres zero-days dans Microsoft Exchange, quatre autres vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 corrig\u00e9es.<\/p>\n\n\n\n<p>\u00ab\u00a0Les quatre vuln\u00e9rabilit\u00e9s sont attribu\u00e9s \u00e0 la NSA, et deux ont \u00e9galement \u00e9t\u00e9 d\u00e9couverts par Microsoft en interne\u00a0\u00bb, a ajout\u00e9 Narang.<\/p>\n\n\n\n<p>Deux des vuln\u00e9rabilit\u00e9s (CVE-2021-28481 et CVE-2021-28480) sont li\u00e9es \u00e0 la pr\u00e9-authentification, ce qui signifie que les acteurs malveillants peuvent les exploiter sans s&rsquo;authentifier aupr\u00e8s du serveur Exchange vuln\u00e9rable.<\/p>\n\n\n\n<p>Il a r\u00e9it\u00e9r\u00e9 que les acteurs malveillants ont intensifi\u00e9 leur int\u00e9r\u00eat pour les serveurs Exchange au cours du mois dernier. Par cons\u00e9quent, les organisations doivent appliquer rapidement les correctifs au serveur Exchange pour \u00e9viter une <strong><a href=\"https:\/\/blog.koddos.net\/zerologon-vulnerability-exploited-by-iranian-hackers-says-microsoft\/\">exploitation prolong\u00e9e de la vuln\u00e9rabilit\u00e9<\/a><\/strong>.<\/p>\n\n\n\n<p><strong>Les deux agences ont fourni des informations essentielles<\/strong><\/p>\n\n\n\n<p>Le FBI et la NSA se sont associ\u00e9s pour <strong><a href=\"https:\/\/techcrunch.com\/2021\/04\/13\/fbi-launches-operation-to-remotely-remove-microsoft-exchange-server-backdoors\/\">fournir des informations<\/a><\/strong> sur les exploits visant les serveurs Exchange. Le FBI a \u00e9galement mis en garde contre le nombre alarmant de serveurs Exchange non patch\u00e9s, dont les acteurs malveillants ont profit\u00e9 pour les exploiter. Le patch de mandat accord\u00e9 au FBI est une autorisation rare. Mais cette action n&rsquo;est pas non plus li\u00e9e aux vuln\u00e9rabilit\u00e9s identifi\u00e9es par la NSA hier.<\/p>\n\n\n\n<p>Le FBI a d\u00e9pos\u00e9 ses documents aupr\u00e8s du tribunal, et il a \u00e9t\u00e9 signal\u00e9 que les serveurs Exchange concern\u00e9s \u00e9taient infect\u00e9s par des shells web install\u00e9s par les acteurs malveillants HAFNIUM. Le FBI a demand\u00e9 l&rsquo;autorisation du tribunal parce qu&rsquo;il a d\u00e9clar\u00e9 que les propri\u00e9taires des services affect\u00e9s n&rsquo;\u00e9taient pas en mesure de supprimer les shells web de mani\u00e8re ind\u00e9pendante. Par cons\u00e9quent, une action rapide \u00e9tait n\u00e9cessaire pour prot\u00e9ger les autres syst\u00e8mes.<\/p>\n\n\n\n<p><strong>Le FBI n&rsquo;a corrig\u00e9 aucun serveur<\/strong><\/p>\n\n\n\n<p>Le FBI a soulign\u00e9 que les op\u00e9rations n&rsquo;avaient pas pour but de corriger les <strong><a href=\"https:\/\/blog.koddos.net\/vpn-vulnerabilities-at-fortinet-being-exploited-by-hackers\/\">vuln\u00e9rabilit\u00e9s des serveurs Microsoft Exchange<\/a> <\/strong>ou de supprimer tout logiciel malveillant des serveurs. L&rsquo;agence a ensuite conseill\u00e9 aux d\u00e9fenseurs du r\u00e9seau d&rsquo;examiner les conseils de rem\u00e9diation fournis par Microsoft. Ils devraient \u00e9galement consulter l&rsquo;avis conjoint du 10 mars 2021, qui les guidera sur la mani\u00e8re de d\u00e9tecter et de corriger leurs syst\u00e8mes.<\/p>\n\n\n\n<p>Selon le mandat accord\u00e9 au FBI, les serveurs web affectent la communication ou le commerce \u00e9tranger et inter\u00e9tatique, sur la base de la connexion Internet. Les serveurs ont \u00e9t\u00e9 \u00e9norm\u00e9ment touch\u00e9s et les shells web ont affect\u00e9 la disponibilit\u00e9 des informations, des syst\u00e8mes, des programmes et des donn\u00e9es sur les serveurs.<\/p>\n\n\n\n<p>Selon le rapport, tous les syst\u00e8mes cibl\u00e9s \u00e9taient bas\u00e9s dans le district nord de la G\u00e9orgie, le district nord de l&rsquo;Iowa, le district ouest de la Louisiane, le district de l&rsquo;Idaho, le district sud de l&rsquo;Ohio, le district nord de l&rsquo;Illinois, le district du Massachusetts et le district sud du Texas.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Les serveurs Microsoft Exchange ont \u00e9t\u00e9 cibl\u00e9s par les acteurs malveillants HAFNIUM au cours du mois dernier. En r\u00e9ponse \u00e0 cette vague d&rsquo;attaques, Microsoft a publi\u00e9 des correctifs hors bande et a averti les utilisateurs d&rsquo;appliquer les mises \u00e0 jour d\u00e8s que possible. Cependant, il semble que la menace ne soit pas encore termin\u00e9e apr\u00e8s &hellip; <a href=\"https:\/\/fr.koddos.net\/blog\/le-fbi-supprime-les-portes-derobees-des-serveurs-microsoft-exchange-compromis\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">LE FBI SUPPRIME LES PORTES D\u00c9ROB\u00c9ES DES SERVEURS MICROSOFT EXCHANGE COMPROMIS<\/span><\/a><\/p>\n","protected":false},"author":5,"featured_media":1311,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[6],"tags":[],"class_list":["post-3131","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualite"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>LE FBI SUPPRIME LES PORTES D\u00c9ROB\u00c9ES DES SERVEURS MICROSOFT EXCHANGE COMPROMIS - Blog KoDDoS<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/fr.koddos.net\/blog\/le-fbi-supprime-les-portes-derobees-des-serveurs-microsoft-exchange-compromis\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"LE FBI SUPPRIME LES PORTES D\u00c9ROB\u00c9ES DES SERVEURS MICROSOFT EXCHANGE COMPROMIS - Blog KoDDoS\" \/>\n<meta property=\"og:description\" content=\"Les serveurs Microsoft Exchange ont \u00e9t\u00e9 cibl\u00e9s par les acteurs malveillants HAFNIUM au cours du mois dernier. 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Cependant, il semble que la menace ne soit pas encore termin\u00e9e apr\u00e8s &hellip; Continue reading LE FBI SUPPRIME LES PORTES D\u00c9ROB\u00c9ES DES SERVEURS MICROSOFT EXCHANGE COMPROMIS\" \/>\n<meta property=\"og:url\" content=\"https:\/\/fr.koddos.net\/blog\/le-fbi-supprime-les-portes-derobees-des-serveurs-microsoft-exchange-compromis\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog KoDDoS\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/koddosCom\" \/>\n<meta property=\"article:published_time\" content=\"2021-04-15T17:40:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-04-16T17:45:17+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/i1.wp.com\/fr.koddos.net\/blog\/wp-content\/uploads\/2019\/10\/FBI-Seizes-DDoS-for-Hire-Websites-and-Charges-Three-Individuals.jpg?fit=825%2C510&ssl=1\" \/>\n\t<meta property=\"og:image:width\" content=\"825\" \/>\n\t<meta property=\"og:image:height\" content=\"510\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"KoDDoS\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@koddoscom\" \/>\n<meta name=\"twitter:site\" content=\"@koddoscom\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"KoDDoS\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/fr.koddos.net\\\/blog\\\/le-fbi-supprime-les-portes-derobees-des-serveurs-microsoft-exchange-compromis\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/fr.koddos.net\\\/blog\\\/le-fbi-supprime-les-portes-derobees-des-serveurs-microsoft-exchange-compromis\\\/\"},\"author\":{\"name\":\"KoDDoS\",\"@id\":\"https:\\\/\\\/fr.koddos.net\\\/blog\\\/#\\\/schema\\\/person\\\/d22f7fb31dc4d117c9eb5c9cfe533f85\"},\"headline\":\"LE FBI SUPPRIME LES PORTES D\u00c9ROB\u00c9ES DES SERVEURS MICROSOFT EXCHANGE COMPROMIS\",\"datePublished\":\"2021-04-15T17:40:00+00:00\",\"dateModified\":\"2021-04-16T17:45:17+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/fr.koddos.net\\\/blog\\\/le-fbi-supprime-les-portes-derobees-des-serveurs-microsoft-exchange-compromis\\\/\"},\"wordCount\":875,\"publisher\":{\"@id\":\"https:\\\/\\\/fr.koddos.net\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/fr.koddos.net\\\/blog\\\/le-fbi-supprime-les-portes-derobees-des-serveurs-microsoft-exchange-compromis\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/i0.wp.com\\\/fr.koddos.net\\\/blog\\\/wp-content\\\/uploads\\\/2019\\\/10\\\/FBI-Seizes-DDoS-for-Hire-Websites-and-Charges-Three-Individuals.jpg?fit=825%2C510&ssl=1\",\"articleSection\":[\"Actualit\u00e9s\"],\"inLanguage\":\"fr-FR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/fr.koddos.net\\\/blog\\\/le-fbi-supprime-les-portes-derobees-des-serveurs-microsoft-exchange-compromis\\\/\",\"url\":\"https:\\\/\\\/fr.koddos.net\\\/blog\\\/le-fbi-supprime-les-portes-derobees-des-serveurs-microsoft-exchange-compromis\\\/\",\"name\":\"LE FBI SUPPRIME LES PORTES D\u00c9ROB\u00c9ES DES SERVEURS MICROSOFT EXCHANGE COMPROMIS - 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En r\u00e9ponse \u00e0 cette vague d&rsquo;attaques, Microsoft a publi\u00e9 des correctifs hors bande et a averti les utilisateurs d&rsquo;appliquer les mises \u00e0 jour d\u00e8s que possible. Cependant, il semble que la menace ne soit pas encore termin\u00e9e apr\u00e8s &hellip; Continue reading LE FBI SUPPRIME LES PORTES D\u00c9ROB\u00c9ES DES SERVEURS MICROSOFT EXCHANGE COMPROMIS","og_url":"https:\/\/fr.koddos.net\/blog\/le-fbi-supprime-les-portes-derobees-des-serveurs-microsoft-exchange-compromis\/","og_site_name":"Blog KoDDoS","article_publisher":"https:\/\/www.facebook.com\/koddosCom","article_published_time":"2021-04-15T17:40:00+00:00","article_modified_time":"2021-04-16T17:45:17+00:00","og_image":[{"width":825,"height":510,"url":"https:\/\/i1.wp.com\/fr.koddos.net\/blog\/wp-content\/uploads\/2019\/10\/FBI-Seizes-DDoS-for-Hire-Websites-and-Charges-Three-Individuals.jpg?fit=825%2C510&ssl=1","type":"image\/jpeg"}],"author":"KoDDoS","twitter_card":"summary_large_image","twitter_creator":"@koddoscom","twitter_site":"@koddoscom","twitter_misc":{"\u00c9crit par":"KoDDoS","Dur\u00e9e de lecture estim\u00e9e":"4 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/fr.koddos.net\/blog\/le-fbi-supprime-les-portes-derobees-des-serveurs-microsoft-exchange-compromis\/#article","isPartOf":{"@id":"https:\/\/fr.koddos.net\/blog\/le-fbi-supprime-les-portes-derobees-des-serveurs-microsoft-exchange-compromis\/"},"author":{"name":"KoDDoS","@id":"https:\/\/fr.koddos.net\/blog\/#\/schema\/person\/d22f7fb31dc4d117c9eb5c9cfe533f85"},"headline":"LE FBI SUPPRIME LES PORTES D\u00c9ROB\u00c9ES DES SERVEURS MICROSOFT EXCHANGE 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