{"id":53188,"date":"2019-11-26T00:00:00","date_gmt":"2019-11-25T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/v-ublock-origin-dobavlena-zashhita-ot-novogo-metoda-otslezhivaniya-manipuliruyushhego-imenami-v-dns"},"modified":"2020-02-18T14:01:04","modified_gmt":"2020-02-18T11:01:04","slug":"v-ublock-origin-dobavlena-zashhita-ot-novogo-metoda-otslezhivaniya-manipuliruyushhego-imenami-v-dns","status":"publish","type":"post","link":"https:\/\/prohoster.info\/fr\/blog\/news\/v-ublock-origin-dobavlena-zashhita-ot-novogo-metoda-otslezhivaniya-manipuliruyushhego-imenami-v-dns","title":{"rendered":"uBlock Origin a ajout\u00e9 une protection contre une nouvelle m\u00e9thode de suivi manipulant les noms dans le DNS","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Utilisateurs de uBlock Origin ont remarqu\u00e9<\/a><\/noindex> l'utilisation par les r\u00e9seaux publicitaires et les syst\u00e8mes d'analyse web de nouvelles techniques de suivi des mouvements et d'insertion d'annonces, qui ne sont pas bloqu\u00e9es dans uBlock Origin et d'autres extensions pour filtrer le contenu ind\u00e9sirable. <\/p>\n

Le principe de la m\u00e9thode est que les propri\u00e9taires de sites, souhaitant int\u00e9grer un code de suivi ou afficher de la publicit\u00e9, cr\u00e9ent un sous-domaine s\u00e9par\u00e9 dans le DNS, faisant r\u00e9f\u00e9rence au serveur du r\u00e9seau publicitaire ou d'analyse web (par exemple, un enregistrement CNAME f7ds.liberation.fr est cr\u00e9\u00e9, pointant vers le serveur de suivi liberation.eulerian.net). Ainsi, le code publicitaire est formellement charg\u00e9 \u00e0 partir du m\u00eame domaine principal que le site, et n'est donc pas soumis \u00e0 un blocage. Le nom du sous-domaine est choisi sous la forme d'un identifiant al\u00e9atoire, ce qui complique le blocage par motif, car le sous-domaine associ\u00e9 au r\u00e9seau publicitaire est difficile \u00e0 distinguer des sous-domaines pour le chargement d'autres ressources locales de la page. <\/p>\n

D\u00e9veloppeur de uBlock Origin a propos\u00e9<\/a><\/noindex> d'utiliser r\u00e9solution<\/a><\/noindex> du nom dans le DNS pour identifier l'h\u00f4te li\u00e9 par CNAME. La m\u00e9thode mis en \u0153uvre<\/a><\/noindex> \u00e0 partir de
\nla version exp\u00e9rimentale uBlock Origin 1.24.1b3<\/a><\/noindex> pour Firefox<\/a><\/noindex>. Pour activer la v\u00e9rification dans les param\u00e8tres avanc\u00e9s, il convient de d\u00e9finir la valeur cnameAliasList sur \u00ab * \u00bb, dans ce cas, tous les contr\u00f4les des listes noires seront doubl\u00e9s et pour les noms d\u00e9termin\u00e9s via CNAME. Lors de l'installation de la mise \u00e0 jour, il sera n\u00e9cessaire de fournir des autorisations pour obtenir des informations \u00e0 partir de DNS.<\/p>\n

\"uBlock<\/a><\/noindex><\/center><\/p>\n

Pour Chrome, la v\u00e9rification CNAME ne peut pas \u00eatre ajout\u00e9e, car l'API dns.resolve()<\/a><\/noindex> n'est disponible que pour les extensions dans Firefox et n'est pas prise en charge dans Chrome. D'un point de vue performance, la d\u00e9termination CNAME ne devrait pas entra\u00eener de co\u00fbts additionnels, mis \u00e0 part la consommation de ressources processeur pour r\u00e9appliquer les r\u00e8gles \u00e0 un autre nom, car lors de l'acc\u00e8s \u00e0 la ressource, le navigateur a d\u00e9j\u00e0 effectu\u00e9 la r\u00e9solution et la valeur doit \u00eatre mise en cache. La m\u00e9thode de protection peut \u00eatre contourn\u00e9e en liant directement le nom \u00e0 l'IP sans utiliser CNAME, mais cette approche complique la maintenance (en cas de changement d'adresse IP du r\u00e9seau publicitaire, il faudra obtenir des modifications sur tous les serveurs DNS des \u00e9diteurs) et peut \u00eatre contourn\u00e9e par la cr\u00e9ation d'une liste noire des adresses IP des traceurs.<\/p>\n

<\/a><\/noindex><\/p>\n

Source : opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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