{"id":84555,"date":"2020-06-09T01:41:56","date_gmt":"2020-06-08T23:41:56","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-ublock-origin-dobavlena-blokirovka-skriptov-dlya-skanirovaniya-setevyh-portov"},"modified":"2020-06-09T01:41:56","modified_gmt":"2020-06-08T23:41:56","slug":"v-ublock-origin-dobavlena-blokirovka-skriptov-dlya-skanirovaniya-setevyh-portov","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/v-ublock-origin-dobavlena-blokirovka-skriptov-dlya-skanirovaniya-setevyh-portov","title":{"rendered":"uBlock Origin ha agregado bloqueo de scripts para escanear puertos de red","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

En el filtro utilizado en uBlock Origin EasyPrivacy<\/a><\/noindex> se han a\u00f1adido reglas para bloquear scripts t\u00edpicos de escaneo de puertos de red en el sistema local del usuario. Recordemos que en mayo se identific\u00f3<\/a><\/noindex> el escaneo de puertos locales al abrir el sitio eBay.com. Se descubri\u00f3 que esta pr\u00e1ctica no se limita a eBay y muchos otros sitios<\/a><\/noindex> (Citibank, TD Bank, Sky, GumTree, WePay, etc.) aplican el escaneo de los puertos locales del sistema del usuario al abrir sus p\u00e1ginas, utilizando c\u00f3digo proporcionado por el servicio ThreatMetrix para identificar intentos de acceso desde computadoras comprometidas.<\/p>\n

En el caso de eBay se realizaba la verificaci\u00f3n de 14 puertos de red asociados con servidores de acceso remoto como VNC, TeamViewer, Anyplace Control, Aeroadmin, Ammy Admin y RDP. Probablemente, la verificaci\u00f3n se realiza para determinar<\/a><\/noindex> para detectar signos de infecci\u00f3n por malware con el fin de prevenir compras fraudulentas utilizando botnets. El escaneo tambi\u00e9n puede usarse para obtener datos para una identificaci\u00f3n indirecta del usuario.<\/a><\/noindex>.<\/p>\n

Para el escaneo se utiliza una t\u00e9cnica basada en intentar establecer conexiones a varios puertos de red del host 127.0.0.1 (localhost) a trav\u00e9s de WebSocket<\/a><\/noindex>La existencia de un puerto de red abierto se determina indirectamente en funci\u00f3n de la diferencia en el manejo de errores de conexi\u00f3n a puertos de red activos e inactivos. WebSocket permite enviar solo solicitudes HTTP, pero una solicitud de este tipo a un puerto de red inactivo termina con un error de inmediato, mientras que para un puerto activo, esto solo ocurre despu\u00e9s de un tiempo, durante el cual intenta establecer la conexi\u00f3n. Adem\u00e1s, en el caso de un puerto inactivo, WebSocket devuelve un c\u00f3digo de error de conexi\u00f3n (ERR_CONNECTION_REFUSED), mientras que para un puerto activo, el c\u00f3digo de error de establecimiento de conexi\u00f3n. <\/p>\n

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

Adem\u00e1s del escaneo de puertos, WebSockets tambi\u00e9n puede utilizarse<\/a><\/noindex> ser utilizado para ataques a sistemas de desarrolladores web que ejecutan controladores WebSocket en el sistema local para aplicaciones React. Un sitio externo puede escanear los puertos de red, determinar la existencia de tal controlador y conectarse a \u00e9l. Si el desarrollador comete un error, el atacante podr\u00e1 acceder al contenido de los datos de depuraci\u00f3n, que pueden incluir fragmentos de informaci\u00f3n confidencial.<\/p>\n

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

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

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

\u0412 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u044b\u0439 \u0432 uBlock Origin \u0444\u0438\u043b\u044c\u0442\u0440 EasyPrivacy \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u044b \u043f\u0440\u0430\u0432\u0438\u043b\u0430 \u0434\u043b\u044f \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u043a\u0438 \u0442\u0438\u043f\u043e\u0432\u044b\u0445 \u0441\u043a\u0440\u0438\u043f\u0442\u043e\u0432 \u0441\u043a\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0441\u0435\u0442\u0435\u0432\u044b\u0445 \u043f\u043e\u0440\u0442\u043e\u0432 \u043d\u0430 \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f. \u041d\u0430\u043f\u043e\u043c\u043d\u0438\u043c, \u0447\u0442\u043e \u0432 \u043c\u0430\u0435 \u0431\u044b\u043b\u043e \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u043e \u0441\u043a\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u044b\u0445 \u043f\u043e\u0440\u0442\u043e\u0432 \u043f\u0440\u0438 \u043e\u0442\u043a\u0440\u044b\u0442\u0438\u0438 \u0441\u0430\u0439\u0442\u0430 eBay.com. \u0412\u044b\u044f\u0441\u043d\u0438\u043b\u043e\u0441\u044c, \u0447\u0442\u043e \u043f\u043e\u0434\u043e\u0431\u043d\u0430\u044f \u043f\u0440\u0430\u043a\u0442\u0438\u043a\u0430 \u043d\u0435 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0438\u0432\u0430\u0435\u0442\u0441\u044f eBay \u0438 \u043c\u043d\u043e\u0433\u0438\u0435 \u0434\u0440\u0443\u0433\u0438\u0435 \u0441\u0430\u0439\u0442\u044b (Citibank, TD Bank, Sky, GumTree, WePay \u0438 \u0442.\u043f.) \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u044e\u0442 \u0441\u043a\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u043f\u043e\u0440\u0442\u043e\u0432 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":84556,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-84555","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47En uBlock Origin se ha a\u00f1adido la funci\u00f3n de bloqueo de scripts para el escaneo de puertos de red | ProHoster","description":"Se han a\u00f1adido reglas para bloquear scripts t\u00edpicos en el filtro EasyPrivacy utilizado en uBlock 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