{"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\/sk\/blog\/news\/uyazvimost-http-2-bomb-privodyashhaya-k-ischerpaniyu-operativnoj-pamyati","title":{"rendered":"Zranite\u013enos\u0165 HTTP\/2 Bomb, ved\u00faca k vy\u0165a\u017eeniu opera\u010dnej pam\u00e4te","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Na za\u010diatku j\u00fana 2026 objavili v\u00fdskumn\u00edci v oblasti kybernetickej bezpe\u010dnosti z firmy Calif (s pomocou AI agenta Codex) nov\u00fa variantu \u00fatoku HTTP\/2 Bomb, ktor\u00fd funguje aj z jedn\u00e9ho klientsk\u00e9ho zariadenia s internetov\u00fdm pripojen\u00edm s r\u00fdchlos\u0165ou 100 Mbit\/s.<\/p>\n

\u00datok sa sklad\u00e1 z dvoch f\u00e1z:<\/p>\n

    \n
  1. \n

    Manipul\u00e1cia so zmr\u0161\u0165ovan\u00edm HPACK: V protokole HTTP\/2 sa hlavi\u010dky zmr\u0161\u0165uj\u00fa pomocou tabu\u013eky HPACK. \u00dato\u010dn\u00edk posiela takmer pr\u00e1zdnu hlavi\u010dku, ale pomocou stoviek tis\u00edc pokynov n\u00fati server<\/a> rozbali\u0165 a neust\u00e1le odkazova\u0165 na jeden a ten ist\u00fd drobn\u00fd prvok. To sp\u00f4sobuje lav\u00ednov\u00fd \u00fanik pam\u00e4te. servera<\/a>.<\/p>\n<\/li>\n

  2. \n

    Blokovanie riadenia toku (Flow Control): Po naplnen\u00ed pam\u00e4te \u00fato\u010dn\u00edk nastav\u00ed ve\u013ekos\u0165 ovl\u00e1dacieho okna toku (flow-control window) na 0. To n\u00fati server pozastavi\u0165 odosielanie odpovede, \u010d\u00edm uchov\u00e1va zaplnen\u00fa pam\u00e4\u0165, a udr\u017euje spojenie otvoren\u00e9 periodick\u00fdmi 1-bajtov\u00fdmi po\u017eiadavkami.<\/p>\n<\/li>\n<\/ol>\n

    Len jeden klient dok\u00e1\u017ee za 10\u201320 sek\u00fand min\u00fa\u0165 a\u017e 32\u201364 GB opera\u010dnej pam\u00e4te. \u00darove\u0148 spotreby pam\u00e4te v r\u00f4znych HTTP serveroch sa pohybuje od pribli\u017ene 70 bajtov na ka\u017ed\u00fd bajt v indexe pre nginx, IIS a Pingora, a\u017e po 4000 bajtov v Apache httpd a 5700 v Envoy.<\/p>\n

    Zranite\u013enosti s\u00fa vystaven\u00e9 prakticky v\u0161etk\u00fdm hlavn\u00fdm serverov\u00fdm implement\u00e1ci\u00e1m HTTP\/2 v predvolen\u00fdch konfigur\u00e1ci\u00e1ch:
    \nNGINX, Apache HTTPD (modul mod_http2), Microsoft IIS, Envoy, Cloudflare, Pingora.<\/p>\n

    Zranite\u013enos\u0165 bola opraven\u00e1 v nginx 1.29.8 (s pomocou direkt\u00edvy max_headers z freenginx, ktor\u00e1 predvolene povo\u013euje spracovanie nie viac ako 1000 hlavi\u010diek), Envoy 1.35.11 a 1.36.7 (mutable_max_request_headers_kb a max_headers_count), Appache mod_http2 2.0.41. Opravy pre Microsoft IIS a Cloudflare Pingora zatia\u013e nie s\u00fa k dispoz\u00edcii.<\/p>\n

    HTTP server Angie nie je vystaven\u00fd zranite\u013enosti, preto\u017ee implementoval ochranu proti tak\u00fdmto \u00fatokom u\u017e vo verzii 1.8.0, ktor\u00e1 vy\u0161la v roku 2024.<\/p>\n

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

    \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, […]<\/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-181901","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\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\udd47Zranite\u013enos\u0165 HTTP\/2 Bomb, ktor\u00e1 vedie k vy\u010derpaniu opera\u010dnej pam\u00e4te | ProHoster","description":"Na za\u010diatku j\u00fana 2026 objavili v\u00fdskumn\u00edci v oblasti kybernetickej bezpe\u010dnosti z firmy Calif (s pomocou AI agenta Codex) nov\u00fa variantu \u00fatoku HTTP\/2 Bomb, ktor\u00fd funguje aj z jedn\u00e9ho klientsk\u00e9ho zariadenia.","canonical_url":"https:\/\/prohoster.info\/sk\/blog\/news\/uyazvimost-http-2-bomb-privodyashhaya-k-ischerpaniyu-operativnoj-pamyati","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"sk_SK","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 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\u0438\u043c\u0435\u044e\u0449\u0435\u0433\u043e.","og:url":"https:\/\/prohoster.info\/sk\/blog\/news\/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\/sk\/wp-json\/wp\/v2\/posts\/181901","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/comments?post=181901"}],"version-history":[{"count":1,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/posts\/181901\/revisions"}],"predecessor-version":[{"id":182083,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/posts\/181901\/revisions\/182083"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/media?parent=181901"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/categories?post=181901"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/tags?post=181901"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}