{"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\/hu\/blog\/news\/uyazvimost-http-2-bomb-privodyashhaya-k-ischerpaniyu-operativnoj-pamyati","title":{"rendered":"HTTP\/2 Bomb sebezhet\u0151s\u00e9g, amely a mem\u00f3riakimer\u00fcl\u00e9shez vezet","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

2026 j\u00fanius elej\u00e9n a Calif c\u00e9g kiberbiztons\u00e1gi kutat\u00f3i (a Codex mesters\u00e9ges intelligencia \u00fcgyn\u00f6k seg\u00edts\u00e9g\u00e9vel) felfedeztek egy \u00faj v\u00e1ltozat\u00e1t a HTTP\/2 Bomb t\u00e1mad\u00e1snak, amely ak\u00e1r egyetlen, 100 Mbps internetkapcsolattal rendelkez\u0151 kliens eszk\u00f6z\u00f6n is m\u0171k\u00f6dik.<\/p>\n

A t\u00e1mad\u00e1s k\u00e9t l\u00e9p\u00e9sb\u0151l \u00e1ll:<\/p>\n

    \n
  1. \n

    A HPACK t\u00f6m\u00f6r\u00edt\u00e9s manipul\u00e1l\u00e1sa: A HTTP\/2 protokollban a fejl\u00e9cadatokat a HPACK t\u00e1bl\u00e1zat seg\u00edts\u00e9g\u00e9vel t\u00f6m\u00f6r\u00edtik. A t\u00e1mad\u00f3 szinte \u00fcres fejl\u00e9cet k\u00fcld, de sz\u00e1mos instru\u00e1l\u00e1ssal arra k\u00e9nyszer\u00edti szerver<\/a> a kicsi elem folyamatos kib\u0151v\u00edt\u00e9s\u00e9re \u00e9s hivatkoz\u00e1s\u00e1ra. Ez lavinaszer\u0171 mem\u00f3riafogyaszt\u00e1st okoz. a szerver<\/a>.<\/p>\n<\/li>\n

  2. \n

    A folyamatir\u00e1ny\u00edt\u00e1s blokkol\u00e1sa: Miut\u00e1n a mem\u00f3ria megtelt, a t\u00e1mad\u00f3 a folyamatir\u00e1ny\u00edt\u00f3 ablak (flow-control window) m\u00e9ret\u00e9t 0-ra \u00e1ll\u00edtja. Ez arra k\u00e9nyszer\u00edti a szervert, hogy felf\u00fcggessze a v\u00e1lasz k\u00fcld\u00e9s\u00e9t, \u00edgy megtartva a haszn\u00e1lt mem\u00f3ri\u00e1t, \u00e9s folyamatosan fenntartva a kapcsolatot 1 byte-os k\u00e9r\u00e9sekkel.<\/p>\n<\/li>\n<\/ol>\n

    Csak egy kliens 10\u201320 m\u00e1sodperc alatt ak\u00e1r 32\u201364 GB RAM-ot is elhaszn\u00e1lhat. A mem\u00f3riafogyaszt\u00e1s k\u00fcl\u00f6nb\u00f6z\u0151 HTTP-szerverek eset\u00e9ben kb. 70 byte-t\u00f3l a nyilv\u00e1ntart\u00e1s minden byte-j\u00e1\u00e9rt az nginx, IIS \u00e9s Pingora eset\u00e9ben, ak\u00e1r 4000 byte-ig az Apache httpd-\u00e9n \u00e9s 5700 byte-ig az Envoy-on.<\/p>\n

    A s\u00e9r\u00fcl\u00e9kenys\u00e9g szinte minden f\u0151 HTTP\/2 server implement\u00e1ci\u00f3t \u00e9rint az alap\u00e9rtelmezett konfigur\u00e1ci\u00f3kban:
    \nNGINX, Apache HTTPD (mod_http2 modul), Microsoft IIS, Envoy, Cloudflare, Pingora<\/p>\n

    A s\u00e9r\u00fcl\u00e9kenys\u00e9get az nginx 1.29.8 verzi\u00f3j\u00e1ban jav\u00edtott\u00e1k (a freenginx max_headers utas\u00edt\u00e1s\u00e1val, amely alap\u00e9rtelmez\u00e9s szerint legfeljebb 1000 fejl\u00e9c feldolgoz\u00e1s\u00e1t enged\u00e9lyezi), az Envoy 1.35.11 \u00e9s 1.36.7 verzi\u00f3kban (mutable_max_request_headers_kb \u00e9s max_headers_count), az Apache mod_http2 2.0.41 verzi\u00f3ban. A Microsoft IIS \u00e9s Cloudflare Pingora sz\u00e1m\u00e1ra m\u00e9g nem \u00e1llnak rendelkez\u00e9sre jav\u00edt\u00e1sok.<\/p>\n

    Az Angie HTTP-server nem \u00e9rintett a s\u00e9r\u00fcl\u00e9kenys\u00e9gben, mivel m\u00e1r 1.8.0 verzi\u00f3j\u00e1ban, amely 2024-ben jelent meg, v\u00e9delmet val\u00f3s\u00edtott meg az ilyen t\u00edpus\u00fa t\u00e1mad\u00e1sok ellen.<\/p>\n

    Forr\u00e1s: 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\udd47 HTTP\/2 Bomb s\u00e9r\u00fcl\u00e9kenys\u00e9g, amely RAM elfogyaszt\u00e1s\u00e1hoz vezet | ProHoster","description":"2026 j\u00fanius elej\u00e9n a Calif c\u00e9g kiberbiztons\u00e1gi kutat\u00f3i (a Codex mesters\u00e9ges intelligencia \u00fcgyn\u00f6k seg\u00edts\u00e9g\u00e9vel) felfedeztek egy \u00faj v\u00e1ltozat\u00e1t a HTTP\/2 Bomb t\u00e1mad\u00e1snak, amely ak\u00e1r egyetlen kliensek eszk\u00f6z\u00f6n is m\u0171k\u00f6dik.","canonical_url":"https:\/\/prohoster.info\/hu\/blog\/news\/uyazvimost-http-2-bomb-privodyashhaya-k-ischerpaniyu-operativnoj-pamyati","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"hu_HU","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.","og:url":"https:\/\/prohoster.info\/hu\/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\/hu\/wp-json\/wp\/v2\/posts\/181901","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/comments?post=181901"}],"version-history":[{"count":1,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts\/181901\/revisions"}],"predecessor-version":[{"id":182083,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts\/181901\/revisions\/182083"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/media?parent=181901"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/categories?post=181901"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/tags?post=181901"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}