{"id":1244,"date":"2019-09-20T19:52:55","date_gmt":"2019-09-20T17:52:55","guid":{"rendered":"https:\/\/fr.koddos.net\/blog\/?p=1244"},"modified":"2019-09-20T19:53:02","modified_gmt":"2019-09-20T17:53:02","slug":"akamai-devoile-le-quatrieme-plus-grand-exploit-ddos-utilisant-la-vulnerabilite-wsd","status":"publish","type":"post","link":"https:\/\/fr.koddos.net\/blog\/akamai-devoile-le-quatrieme-plus-grand-exploit-ddos-utilisant-la-vulnerabilite-wsd\/","title":{"rendered":"AKAMAI D\u00c9VOILE LE QUATRI\u00c8ME PLUS GRAND EXPLOIT DDOS UTILISANT LA VULN\u00c9RABILIT\u00c9 WSD"},"content":{"rendered":"\n

Ce\nmercredi, des chercheurs de la soci\u00e9t\u00e9 Akamai ont d\u00e9voil\u00e9 ce qu’ils pensent\n\u00eatre la quatri\u00e8me attaque DDoS (Distributed Denial of Service) la plus\nimportante qu’elle ait jamais d\u00e9couverte, via la redout\u00e9e exploitation WSD (WS\nDiscovery) via le protocole UDP.<\/p>\n\n\n\n

WSD\nest une technologie de connectivit\u00e9 que l’on trouve sur plusieurs types\nd’appareils grand public. Il s’av\u00e8re que, d’apr\u00e8s les informations fournies par\nJonathan Respeto, ing\u00e9nieur de l’\u00e9quipe d’intervention du renseignement de\ns\u00e9curit\u00e9 d’Akamai, l’attaque visait un client d’Akamai dans le monde du jeu\nvid\u00e9o.<\/p>\n\n\n\n

Les\nenqu\u00eateurs et les sp\u00e9cialistes en la mati\u00e8re ont expliqu\u00e9 que toute infraction\nciblant les r\u00e9seaux tout en tirant parti de la vuln\u00e9rabilit\u00e9 WDS pourrait \u00eatre\nd\u00e9vastatrice, dans la mesure o\u00f9 elle pourrait atteindre des taux\nd’amplification sup\u00e9rieurs \u00e0 15 000% de la taille de ses octets initiale.<\/p>\n\n\n\n

La\nd\u00e9couverte de WS<\/strong><\/strong><\/p>\n\n\n\n

Les\nenqu\u00eates de WS Discovery sont souvent r\u00e9alis\u00e9es par des machines pr\u00e9sentes sur\nun r\u00e9seau local comme ressource pour d\u00e9couvrir et configurer des services et dispositifs\nsp\u00e9cifiques. Par exemple, si vous vous \u00eates d\u00e9j\u00e0 demand\u00e9 comment un ordinateur\nWindows d\u00e9tecte et configure une imprimante connect\u00e9e \u00e0 un r\u00e9seau, cela se fait\nvia le WSD.<\/p>\n\n\n\n

Cependant,\nle WSD est susceptible d’\u00eatre utilis\u00e9 par des attaquants \u00e0 des fins\nmalveillantes, car il d\u00e9clenche une r\u00e9ponse d’erreur XML de WSD.  Cela peut \u00eatre r\u00e9alis\u00e9 si les cybercriminels\nou le mauvais acteur envoient une charge utile mal form\u00e9e de 29 octets,\nconform\u00e9ment au rapport\nAkamai<\/a><\/strong>.<\/p>\n\n\n\n

La\npublication souligne que parfois, tout ce qui est n\u00e9cessaire est une charge\nutile de 18 octets, qui a une sonde qui est 43% plus petite que la sonde\nr\u00e9guli\u00e8re et 900% plus petite que la sonde minimale qui est consid\u00e9r\u00e9e comme\nvalide. Certes, cela d\u00e9clencherait une r\u00e9ponse plus petite, mais le rapport\nd\u2019amplification est tout aussi dangereux.<\/p>\n\n\n\n

Akamai\nexplique que l’utilisation d’une approche de d\u00e9bordement de rembourrage\npermettrait de rembourrer la r\u00e9ponse d’erreur \u00e0 2 762 octets, soit une quantit\u00e9\nsuffisante pour multiplier le facteur d’amplification et atteindre 15 300 %.\nRespeto a dit que plusieurs hackers ont commenc\u00e9 \u00e0 utiliser le WSD pour\nalimenter leurs attaques\nDDoS<\/a><\/strong>.<\/p>\n\n\n\n

Une\nmenace omnipr\u00e9sente<\/strong><\/p>\n\n\n\n

Pourtant,\nle v\u00e9ritable facteur qui rend le WSD si dangereux et si difficile \u00e0 arr\u00eater est\nque la technologie qui le sous-tend est omnipr\u00e9sente et peut \u00eatre trouv\u00e9e dans\nde nombreux appareils connect\u00e9s \u00e0 Internet, syst\u00e8mes d’exploitation,\nimprimantes HP et autres appareils. R\u00e9cemment, il a \u00e9t\u00e9 rapport\u00e9 que plus de\n600 000 appareils utilisent cette technologie, ce qui signifie que de\nnombreuses machines pourraient \u00eatre menac\u00e9es par une attaque DDoS potentielle.<\/p>\n\n\n\n

Il\nest \u00e9galement pr\u00e9occupant de constater qu’il est tr\u00e8s facile d’exploiter le WSD\nen raison d’une mauvaise mise en \u0153uvre avant que le WSD ne soit destin\u00e9 \u00e0\nl’origine au web. En fait, il est n\u00e9 avant l’\u00e8re num\u00e9rique centr\u00e9e sur\nInternet.<\/p>\n\n\n\n

Les\nentreprises ont commenc\u00e9 \u00e0 fabriquer du mat\u00e9riel avec le service mal impl\u00e9ment\u00e9,\nmais ce sur quoi tout le monde comptait, c’\u00e9tait le fait que les utilisateurs,\napr\u00e8s avoir acquis les appareils et les dispositifs, allaient les d\u00e9ployer sur\nle Web. Sans le savoir, ils ont introduit une nouvelle menace sous la forme\nd’un vecteur de r\u00e9flexion DDoS, selon Respeto.<\/p>\n\n\n\n

Respeto\nn’a cess\u00e9 d’avertir les internautes, affirmant que les attaques par WSD peuvent\n\u00eatre d\u00e9vastatrices et que les hackers<\/a><\/strong>\nn’ont pas besoin de beaucoup de ressources pour perp\u00e9trer une offensive contre\nune entit\u00e9.<\/p>\n\n\n\n

Un\nprotocole sans statut<\/strong><\/p>\n\n\n\n

La\nbande passante d’une victime cibl\u00e9e peut \u00eatre exploit\u00e9e de mani\u00e8re abusive par\nune attaque centr\u00e9e sur le WSD parce que les requ\u00eates adress\u00e9es au service WSD\npeuvent \u00eatre usurp\u00e9es, \u00e9tant donn\u00e9 qu’UDP est un protocole sans statut. S’il\nest usurp\u00e9, le serveur concern\u00e9 enverra des r\u00e9ponses qui paralyseront\nl’ensemble du syst\u00e8me.<\/p>\n\n\n\n

Selon\nles d\u00e9clarations d’Akamai \u00e0 Threatpost<\/a><\/strong>,\ncette approche est largement utilis\u00e9e et a affect\u00e9 les utilisateurs de certains\nsites tr\u00e8s m\u00e9diatis\u00e9s dans le pass\u00e9, tels que GitHub<\/a><\/strong>,\nSpotify, Twitter et autres.<\/p>\n\n\n\n

Bien\nque la vuln\u00e9rabilit\u00e9 li\u00e9e \u00e0 WSD existe depuis assez longtemps, les hackers et\nles cybercriminels du monde entier sont maintenant conscients du fait qu\u2019ils\npeuvent exploiter la technologie pour mener des attaques DDoS \u00e0 grande \u00e9chelle.<\/p>\n\n\n\n

Le\nplus inqui\u00e9tant, c’est que les entreprises ne peuvent pas faire grand-chose\npour \u00e9viter la situation. Selon Respeto, elles ne peuvent qu’attendre\npatiemment que des appareils vuln\u00e9rables ayant une dur\u00e9e de vie de 10 \u00e0 15 ans\ndisparaissent lentement et esp\u00e9rer que le prochain lot qui les remplace soit\nplus s\u00fbr.<\/p>\n","protected":false},"excerpt":{"rendered":"

Ce mercredi, des chercheurs de la soci\u00e9t\u00e9 Akamai ont d\u00e9voil\u00e9 ce qu’ils pensent \u00eatre la quatri\u00e8me attaque DDoS (Distributed Denial of Service) la plus importante qu’elle ait jamais d\u00e9couverte, via la redout\u00e9e exploitation WSD (WS Discovery) via le protocole UDP. WSD est une technologie de connectivit\u00e9 que l’on trouve sur plusieurs types d’appareils grand public. … Continue reading AKAMAI D\u00c9VOILE LE QUATRI\u00c8ME PLUS GRAND EXPLOIT DDOS UTILISANT LA VULN\u00c9RABILIT\u00c9 WSD<\/span><\/a><\/p>\n","protected":false},"author":5,"featured_media":1245,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_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},"jetpack_post_was_ever_published":false},"categories":[6],"tags":[],"class_list":["post-1244","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualite"],"yoast_head":"\nAKAMAI D\u00c9VOILE LE QUATRI\u00c8ME PLUS GRAND EXPLOIT DDOS UTILISANT LA VULN\u00c9RABILIT\u00c9 WSD - 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\/akamai-devoile-le-quatrieme-plus-grand-exploit-ddos-utilisant-la-vulnerabilite-wsd\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"AKAMAI D\u00c9VOILE LE QUATRI\u00c8ME PLUS GRAND EXPLOIT DDOS UTILISANT LA VULN\u00c9RABILIT\u00c9 WSD - Blog KoDDoS\" \/>\n<meta property=\"og:description\" content=\"Ce mercredi, des chercheurs de la soci\u00e9t\u00e9 Akamai ont d\u00e9voil\u00e9 ce qu’ils pensent \u00eatre la quatri\u00e8me attaque DDoS (Distributed Denial of Service) la plus importante qu’elle ait jamais d\u00e9couverte, via la redout\u00e9e exploitation WSD (WS Discovery) via le protocole UDP. WSD est une technologie de connectivit\u00e9 que l’on trouve sur plusieurs types d’appareils grand public. … Continue reading AKAMAI D\u00c9VOILE LE QUATRI\u00c8ME PLUS GRAND EXPLOIT DDOS UTILISANT LA VULN\u00c9RABILIT\u00c9 WSD\" \/>\n<meta property=\"og:url\" content=\"https:\/\/fr.koddos.net\/blog\/akamai-devoile-le-quatrieme-plus-grand-exploit-ddos-utilisant-la-vulnerabilite-wsd\/\" \/>\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=\"2019-09-20T17:52:55+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2019-09-20T17:53:02+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/i2.wp.com\/fr.koddos.net\/blog\/wp-content\/uploads\/2019\/09\/vps_ddos_security.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\\\/akamai-devoile-le-quatrieme-plus-grand-exploit-ddos-utilisant-la-vulnerabilite-wsd\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/fr.koddos.net\\\/blog\\\/akamai-devoile-le-quatrieme-plus-grand-exploit-ddos-utilisant-la-vulnerabilite-wsd\\\/\"},\"author\":{\"name\":\"KoDDoS\",\"@id\":\"https:\\\/\\\/fr.koddos.net\\\/blog\\\/#\\\/schema\\\/person\\\/d22f7fb31dc4d117c9eb5c9cfe533f85\"},\"headline\":\"AKAMAI D\u00c9VOILE LE QUATRI\u00c8ME PLUS GRAND EXPLOIT DDOS UTILISANT LA VULN\u00c9RABILIT\u00c9 WSD\",\"datePublished\":\"2019-09-20T17:52:55+00:00\",\"dateModified\":\"2019-09-20T17:53:02+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/fr.koddos.net\\\/blog\\\/akamai-devoile-le-quatrieme-plus-grand-exploit-ddos-utilisant-la-vulnerabilite-wsd\\\/\"},\"wordCount\":841,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/fr.koddos.net\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/fr.koddos.net\\\/blog\\\/akamai-devoile-le-quatrieme-plus-grand-exploit-ddos-utilisant-la-vulnerabilite-wsd\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/i0.wp.com\\\/fr.koddos.net\\\/blog\\\/wp-content\\\/uploads\\\/2019\\\/09\\\/vps_ddos_security.jpg?fit=825%2C510&ssl=1\",\"articleSection\":[\"Actualit\u00e9s\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/fr.koddos.net\\\/blog\\\/akamai-devoile-le-quatrieme-plus-grand-exploit-ddos-utilisant-la-vulnerabilite-wsd\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/fr.koddos.net\\\/blog\\\/akamai-devoile-le-quatrieme-plus-grand-exploit-ddos-utilisant-la-vulnerabilite-wsd\\\/\",\"url\":\"https:\\\/\\\/fr.koddos.net\\\/blog\\\/akamai-devoile-le-quatrieme-plus-grand-exploit-ddos-utilisant-la-vulnerabilite-wsd\\\/\",\"name\":\"AKAMAI D\u00c9VOILE LE QUATRI\u00c8ME PLUS GRAND EXPLOIT DDOS UTILISANT LA VULN\u00c9RABILIT\u00c9 WSD - 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