{"id":181901,"date":"2026-06-05T02:48:08","date_gmt":"2026-06-05T00:48:08","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-http-2-bomb-privodyashhaya-k-ischerpaniyu-operativnoj-pamyati"},"modified":"2026-06-05T02:48:08","modified_gmt":"2026-06-05T00:48:08","slug":"uyazvimost-http-2-bomb-privodyashhaya-k-ischerpaniyu-operativnoj-pamyati","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/novosti-interneta\/uyazvimost-http-2-bomb-privodyashhaya-k-ischerpaniyu-operativnoj-pamyati","title":{"rendered":"Vulnerabilit\u00e0 HTTP\/2 Bomb, che provoca esaurimento della memoria","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

All'inizio di giugno 2026, i ricercatori in cyber sicurezza di Calif (con l'aiuto dell'agente IA Codex) hanno scoperto una nuova variante dell'attacco HTTP\/2 Bomb, che funziona anche con un solo dispositivo client con una connessione a Internet di 100 Mbit\/s.<\/p>\n

L'attacco si compone di due fasi:<\/p>\n

    \n
  1. \n

    Manipolazione della compressione HPACK: Nel protocollo HTTP\/2, gli header vengono compressi utilizzando una tabella HPACK. L'attaccante invia un header quasi vuoto, ma con centinaia di migliaia di istruzioni costringe un server<\/a> a decomprimere e fare riferimento continuamente a un singolo, microscopico elemento. Questo causa un consumo di memoria a valanga. server<\/a>.<\/p>\n<\/li>\n

  2. \n

    Blocco del controllo del flusso (Flow Control): Dopo che la memoria \u00e8 piena, l'aggressore imposta la dimensione della finestra di controllo del flusso a 0. Questo costringe il server a sospendere l'invio della risposta, mantenendo occupata la memoria, e a mantenere la connessione aperta con richieste periodiche di 1 byte.<\/p>\n<\/li>\n<\/ol>\n

    Un solo cliente pu\u00f2 consumare fino a 32-64 GB di memoria RAM in 10-20 secondi. Il livello di consumo di memoria nei vari server HTTP varia da circa 70 byte per ogni byte nell'indice per nginx, IIS e Pingora, fino a 4000 byte in Apache httpd e 5700 in Envoy.<\/p>\n

    Quasi tutte le principali implementazioni del server HTTP\/2 nelle configurazioni predefinite sono vulnerabili:
    \nNGINX, Apache HTTPD (modulo mod_http2), Microsoft IIS, Envoy, Cloudflare, Pingora<\/p>\n

    La vulnerabilit\u00e0 \u00e8 stata corretta in nginx 1.29.8 (tramite la direttiva max_headers da freenginx, che per impostazione predefinita consente di elaborare non pi\u00f9 di 1000 intestazioni), Envoy 1.35.11 e 1.36.7 (mutable_max_request_headers_kb e max_headers_count), e Apache mod_http2 2.0.41. Non ci sono al momento correzioni per Microsoft IIS e Cloudflare Pingora.<\/p>\n

    Il server HTTP Angie non \u00e8 vulnerabile, poich\u00e9 ha implementato una protezione contro questo tipo di attacchi fin dalla versione 1.8.0, rilasciata nel 2024.<\/p>\n

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

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L'attacco si articola in due fasi: Manipolazione della compressione HPACK: nel protocollo HTTP\/2, le intestazioni vengono compresse utilizzando la tabella HPACK. L'attaccante invia un'intestazione quasi vuota,","canonical_url":"https:\/\/prohoster.info\/it\/blog\/novosti-interneta\/uyazvimost-http-2-bomb-privodyashhaya-k-ischerpaniyu-operativnoj-pamyati","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"it_IT","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\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c HTTP\/2 Bomb, \u043f\u0440\u0438\u0432\u043e\u0434\u044f\u0449\u0430\u044f \u043a \u0438\u0441\u0447\u0435\u0440\u043f\u0430\u043d\u0438\u044e \u043e\u043f\u0435\u0440\u0430\u0442\u0438\u0432\u043d\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\u0438 | ProHoster","og:description":"\u0412 \u043d\u0430\u0447\u0430\u043b\u0435 \u0438\u044e\u043d\u044f 2026 \u0433\u043e\u0434\u0430 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u0438 \u043a\u0438\u0431\u0435\u0440\u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0438\u0437 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Calif (\u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u0418\u0418-\u0430\u0433\u0435\u043d\u0442\u0430 Codex) \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0438\u043b\u0438 \u043d\u043e\u0432\u044b\u0439 \u0432\u0430\u0440\u0438\u0430\u043d\u0442 \u0430\u0442\u0430\u043a\u0438 HTTP\/2 Bomb, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442 \u0434\u0430\u0436\u0435 \u0441 \u043e\u0434\u043d\u043e\u0433\u043e \u043a\u043b\u0438\u0435\u043d\u0442\u0441\u043a\u043e\u0433\u043e \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0430, \u0438\u043c\u0435\u044e\u0449\u0435\u0433\u043e \u0438\u043d\u0442\u0435\u0440\u043d\u0435\u0442-\u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 \u0441\u043e \u0441\u043a\u043e\u0440\u043e\u0441\u0442\u044c\u044e 100 \u041c\u0431\u0438\u0442\/\u0441. \u0410\u0442\u0430\u043a\u0430 \u0441\u043e\u0441\u0442\u043e\u0438\u0442 \u0438\u0437 \u0434\u0432\u0443\u0445 \u044d\u0442\u0430\u043f\u043e\u0432: \u041c\u0430\u043d\u0438\u043f\u0443\u043b\u044f\u0446\u0438\u044f \u0441\u0436\u0430\u0442\u0438\u0435\u043c HPACK: \u0412 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0435 HTTP\/2 \u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043a\u0438 \u0441\u0436\u0438\u043c\u0430\u044e\u0442\u0441\u044f \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u0442\u0430\u0431\u043b\u0438\u0446\u044b HPACK. \u0410\u0442\u0430\u043a\u0443\u044e\u0449\u0438\u0439 \u043e\u0442\u043f\u0440\u0430\u0432\u043b\u044f\u0435\u0442 \u043f\u043e\u0447\u0442\u0438 \u043f\u0443\u0441\u0442\u043e\u0439 \u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043e\u043a,","og:url":"https:\/\/prohoster.info\/it\/blog\/novosti-interneta\/uyazvimost-http-2-bomb-privodyashhaya-k-ischerpaniyu-operativnoj-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":"2026-06-05T00:48:08+00:00","article:modified_time":"2026-06-05T00:48:08+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\/it\/wp-json\/wp\/v2\/posts\/181901","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/comments?post=181901"}],"version-history":[{"count":1,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/posts\/181901\/revisions"}],"predecessor-version":[{"id":182083,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/posts\/181901\/revisions\/182083"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/media?parent=181901"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/categories?post=181901"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/tags?post=181901"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}