{"id":100782,"date":"2021-07-16T22:22:59","date_gmt":"2021-07-16T20:23:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-ublock-origin-privodyashhaya-k-krahu-ili-ischerpaniyu-resursov"},"modified":"2021-07-16T22:22:59","modified_gmt":"2021-07-16T20:23:00","slug":"uyazvimost-v-ublock-origin-privodyashhaya-k-krahu-ili-ischerpaniyu-resursov","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/uyazvimost-v-ublock-origin-privodyashhaya-k-krahu-ili-ischerpaniyu-resursov","title":{"rendered":"Vulnerabilidad en uBlock Origin que lleva a un fallo o agotamiento de recursos","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Se ha encontrado una vulnerabilidad en el sistema de bloqueo de contenido no deseado uBlock Origin, que permite provocar un fallo o agotar la memoria al navegar por una URL especialmente dise\u00f1ada, si dicha URL cae bajo los filtros de bloqueo estricto (\u00abstrict blocking\u00bb). La vulnerabilidad se manifiesta \u00fanicamente al acceder directamente a la URL problem\u00e1tica, por ejemplo, al hacer clic en un enlace.      <\/p>\n<p>La vulnerabilidad se ha corregido en la actualizaci\u00f3n de uBlock Origin 1.36.2. Un problema similar tambi\u00e9n afecta a la extensi\u00f3n uMatrix, pero su soporte ha sido interrumpido y no se lanzan m\u00e1s actualizaciones. No hay soluciones de protecci\u00f3n en uMatrix (originalmente se suger\u00eda desactivar todos los filtros de bloqueo estricto a trav\u00e9s de la pesta\u00f1a \u00abAssets\u00bb, pero esta recomendaci\u00f3n fue reconocida como insuficiente y problem\u00e1ticas para los usuarios con reglas propias de bloqueo). La vulnerabilidad se ha corregido en uMatrix, un fork de uMatrix del proyecto Pale Moon, en la versi\u00f3n 4.4.9.      <\/p>\n<p>El filtro de bloqueo estricto se define generalmente a nivel <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/es\/domain\/\"   title=\"dominios\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3164\">dominios<\/a> y supone la prohibici\u00f3n de cualquier conexi\u00f3n, incluso al acceder directamente a un enlace. La vulnerabilidad se debe a que, al navegar a una p\u00e1gina que cae bajo el filtro de bloqueo estricto, se muestra al usuario una advertencia que contiene informaci\u00f3n sobre el recurso bloqueado, incluyendo la URL y los par\u00e1metros de la solicitud. El problema es que uBlock Origin analiza los par\u00e1metros de la solicitud de manera recursiva y los a\u00f1ade al \u00e1rbol DOM sin tener en cuenta el nivel de anidamiento.    <\/p>\n<p>Al procesar una URL espec\u00edficamente dise\u00f1ada en uBlock Origin para Chrome, se puede provocar un fallo en el proceso que ejecuta la extensi\u00f3n del navegador. Despu\u00e9s del fallo, mientras el proceso con la extensi\u00f3n no se reinicie, el usuario queda sin la funci\u00f3n de bloqueo de contenido no deseado. En Firefox, se observa un agotamiento de memoria.    <center><img decoding=\"async\" alt=\"Vulnerabilidad en uBlock Origin que lleva a un fallo o agotamiento de recursos\" src=\"\/wp-content\/uploads\/2021\/07\/c3ef9b81554a28d5aaed82d8ab963505.png\" style=\"display:block;margin: 0 auto;\" \/><\/center><br \/>\n<br \/>Fuente: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=55498\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u043d\u0435\u0436\u0435\u043b\u0430\u0442\u0435\u043b\u044c\u043d\u043e\u0433\u043e \u043a\u043e\u043d\u0442\u0435\u043d\u0442\u0430 uBlock Origin \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u043a\u0440\u0430\u0445\u0430 \u0438\u043b\u0438 \u0438\u0441\u0447\u0435\u0440\u043f\u0430\u043d\u0438\u044f \u043f\u0430\u043c\u044f\u0442\u0438 \u043f\u0440\u0438 \u043d\u0430\u0432\u0438\u0433\u0430\u0446\u0438\u0438 \u043f\u043e \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u043e\u043c\u0443 URL, \u0432 \u0441\u043b\u0443\u0447\u0430\u0435 \u043f\u043e\u0434\u043f\u0430\u0434\u0430\u043d\u0438\u044f \u0434\u0430\u043d\u043d\u043e\u0433\u043e URL \u043f\u043e\u0434 \u0444\u0438\u043b\u044c\u0442\u0440\u044b \u0441\u0442\u0440\u043e\u0433\u043e\u0439 \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u043a\u0438 (&#171;strict blocking&#187;). \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0442\u043e\u043b\u044c\u043a\u043e \u043f\u0440\u0438 \u043f\u0440\u044f\u043c\u043e\u043c \u043f\u0435\u0440\u0435\u0445\u043e\u0434\u0435 \u043d\u0430 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u043d\u044b\u0439 URL, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440 \u043f\u0440\u0438 \u043a\u043b\u0438\u043a\u0435 \u043f\u043e \u0441\u0441\u044b\u043b\u043a\u0435. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0432 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0438 uBlock Origin 1.36.2. \u0410\u043d\u0430\u043b\u043e\u0433\u0438\u0447\u043d\u043e\u0439 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0435 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":100783,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-100782","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u043d\u0435\u0436\u0435\u043b\u0430\u0442\u0435\u043b\u044c\u043d\u043e\u0433\u043e \u043a\u043e\u043d\u0442\u0435\u043d\u0442\u0430 uBlock Origin \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f 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uBlock Origin que provoca fallos o agotamiento de recursos | ProHoster","description":"Se ha identificado una vulnerabilidad en el sistema de bloqueo de contenido no deseado uBlock Origin, que permite causar un fallo o agotamiento de memoria al navegar por una URL espec\u00edficamente dise\u00f1ada, siempre que esta URL caiga bajo.","canonical_url":"https:\/\/prohoster.info\/es\/blog\/news\/uyazvimost-v-ublock-origin-privodyashhaya-k-krahu-ili-ischerpaniyu-resursov","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"es_ES","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS 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