{"id":181899,"date":"2026-06-04T14:48:20","date_gmt":"2026-06-04T12:48:20","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/ataka-na-realizaczii-http-2-privodyashhaya-k-ischerpaniyu-dostupnoj-pamyati"},"modified":"2026-06-04T14:48:20","modified_gmt":"2026-06-04T12:48:20","slug":"ataka-na-realizaczii-http-2-privodyashhaya-k-ischerpaniyu-dostupnoj-pamyati","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/ataka-na-realizaczii-http-2-privodyashhaya-k-ischerpaniyu-dostupnoj-pamyati","title":{"rendered":"Ataque a implementaciones de HTTP\/2 que lleva al agotamiento de la memoria disponible","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Se ha revelado informaci\u00f3n sobre la vulnerabilidad \u00abHTTP\/2 Bomb\u00bb, que afecta a diversas implementaciones del protocolo HTTP\/2 y permite provocar una denegaci\u00f3n de servicio agotando toda la memoria disponible del proceso. Se ha confirmado la existencia del problema en los servidores HTTP nginx, Apache httpd (CVE-2026-49975), Microsoft IIS, Envoy (CVE-2026-47774) y Cloudflare Pingora en la configuraci\u00f3n predeterminada.<\/p>\n

La vulnerabilidad utiliza un m\u00e9todo similar a una bomba zip, aplicada a la funcionalidad de compresi\u00f3n de encabezados en HTTP\/2. La idea es que una solicitud puede contener miles de encabezados comprimidos, como \u00abCookie\u00bb, sin datos adjuntos, cada uno de los cuales en la solicitud se presenta como una referencia de un solo byte en el \u00edndice HPACK, pero en servidor<\/a> requiere asignaci\u00f3n de memoria completa para todo el encabezado. El nivel de consumo de memoria en varios servidores HTTP var\u00eda desde aproximadamente 70 bytes por cada byte en el \u00edndice para nginx, IIS y Pingora, hasta 4000 bytes en Apache httpd y 5700 en Envoy. En un ataque desde una computadora de consumo con un canal de 100Mbps, se requieren aproximadamente 10 segundos para agotar 32 GB de memoria atacando servidor<\/a> Envoy 1.37.2, 18 segundos \u2014 Apache httpd 2.4.67 y 45 segundos \u2014 nginx 1.29.7.<\/p>\n

Para bloquear la vulnerabilidad, en la versi\u00f3n 1.29.8 de nginx se traslad\u00f3 la directiva max_headers del proyecto freenginx, que por defecto permite el procesamiento de no m\u00e1s de 1000 encabezados. En Envoy, la correcci\u00f3n
\nse incluye en las versiones 1.35.11 y 1.36.7, en las cuales se implementaron los l\u00edmites mutable_max_request_headers_kb y max_headers_count. En Apache httpd, la correcci\u00f3n se propone en la versi\u00f3n del m\u00f3dulo mod_http2 2.0.41, que a\u00fan no se ha incluido en los lanzamientos de Apache httpd. Para
\nMicrosoft IIS y Cloudflare Pingora, las correcciones a\u00fan est\u00e1n ausentes.
\nComo soluci\u00f3n alternativa de protecci\u00f3n, se puede deshabilitar el uso del protocolo HTTP\/2 y establecer un l\u00edmite en la cantidad de memoria disponible para los procesos de trabajo.
\n
Fuente: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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[…]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-181899","post","type-post","status-publish","format-standard","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\udd47Ataque a implementaciones de HTTP\/2 que causa el agotamiento de la memoria disponible | ProHoster","description":"Se ha revelado informaci\u00f3n sobre la vulnerabilidad \u00abHTTP\/2 Bomb\u00bb, que afecta a varias implementaciones del protocolo HTTP\/2 y permite provocar una denegaci\u00f3n de servicio mediante el agotamiento de toda la memoria disponible del proceso.","canonical_url":"https:\/\/prohoster.info\/es\/blog\/news\/ataka-na-realizaczii-http-2-privodyashhaya-k-ischerpaniyu-dostupnoj-pamyati","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 \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0410\u0442\u0430\u043a\u0430 \u043d\u0430 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 HTTP\/2, \u043f\u0440\u0438\u0432\u043e\u0434\u044f\u0449\u0430\u044f \u043a \u0438\u0441\u0447\u0435\u0440\u043f\u0430\u043d\u0438\u044e \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\u0438 | ProHoster","og:description":"\u0420\u0430\u0441\u043a\u0440\u044b\u0442\u0430 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e\u0431 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 "HTTP\/2 Bomb", \u0437\u0430\u0442\u0440\u0430\u0433\u0438\u0432\u0430\u044e\u0449\u0435\u0439 \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0435 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 HTTP\/2 \u0438 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0439 \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u043e\u0442\u043a\u0430\u0437\u0430 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438 \u0447\u0435\u0440\u0435\u0437 \u0438\u0441\u0447\u0435\u0440\u043f\u0430\u043d\u0438\u0435 \u0432\u0441\u0435\u0439 \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u043e\u0439 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0443 \u043f\u0430\u043c\u044f\u0442\u0438.","og:url":"https:\/\/prohoster.info\/es\/blog\/news\/ataka-na-realizaczii-http-2-privodyashhaya-k-ischerpaniyu-dostupnoj-pamyati","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2026-06-04T12:48:20+00:00","article:modified_time":"2026-06-04T12:48:20+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":[],"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/es\/wp-json\/wp\/v2\/posts\/181899","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/es\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/es\/wp-json\/wp\/v2\/comments?post=181899"}],"version-history":[{"count":1,"href":"https:\/\/prohoster.info\/es\/wp-json\/wp\/v2\/posts\/181899\/revisions"}],"predecessor-version":[{"id":182084,"href":"https:\/\/prohoster.info\/es\/wp-json\/wp\/v2\/posts\/181899\/revisions\/182084"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/es\/wp-json\/wp\/v2\/media?parent=181899"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/es\/wp-json\/wp\/v2\/categories?post=181899"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/es\/wp-json\/wp\/v2\/tags?post=181899"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}