{"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\/pl\/blog\/news\/ataka-na-realizaczii-http-2-privodyashhaya-k-ischerpaniyu-dostupnoj-pamyati","title":{"rendered":"Atak na implementacje HTTP\/2 prowadz\u0105cy do wyczerpania dost\u0119pnej pami\u0119ci","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Opublikowano informacje o podatno\u015bci \u201eHTTP\/2 Bomb\u201d, kt\u00f3ra dotyczy r\u00f3\u017cnych implementacji protoko\u0142u HTTP\/2 i pozwala na osi\u0105gni\u0119cie odmowy us\u0142ugi przez wyczerpanie dost\u0119pnej pami\u0119ci procesu. Problem zosta\u0142 potwierdzony w serwerach HTTP nginx, Apache httpd (CVE-2026-49975), Microsoft IIS, Envoy (CVE-2026-47774) oraz Cloudflare Pingora w konfiguracji domy\u015blnej.<\/p>\n

Podatno\u015b\u0107 wykorzystuje metod\u0119 przypominaj\u0105c\u0105 bomb\u0119 zip, stosowan\u0105 w funkcjonalno\u015bci kompresji nag\u0142\u00f3wk\u00f3w w HTTP\/2. Idea polega na tym, \u017ce \u017c\u0105danie mo\u017ce zawiera\u0107 tysi\u0105ce skompresowanych nag\u0142\u00f3wk\u00f3w, takich jak \u201eCookie\u201d, bez do\u0142\u0105czonych danych, z kt\u00f3rych ka\u017cdy jest w \u017c\u0105daniu reprezentowany jedn\u0105 bajtow\u0105 referencj\u0105 w indeksie HPACK, ale na serwerze<\/a> wymaga pe\u0142nego przydzielenia pami\u0119ci dla ca\u0142ego nag\u0142\u00f3wka. Poziom zu\u017cycia pami\u0119ci w r\u00f3\u017cnych serwerach HTTP waha si\u0119 od oko\u0142o 70 bajt\u00f3w na ka\u017cdy bajt w indeksie dla nginx, IIS i Pingora, do 4000 bajt\u00f3w w Apache httpd i 5700 w Envoy. Przy ataku z komputera osobistego wyposa\u017conego w \u0142\u0105cze 100Mbps potrzeba oko\u0142o 10 sekund na wyczerpanie 32 GB pami\u0119ci w przypadku ataku na serwer<\/a> z Envoy 1.37.2, 18 sekund \u2014 Apache httpd 2.4.67 i 45 sekund \u2014 nginx 1.29.7.<\/p>\n

Aby zablokowa\u0107 podatno\u015b\u0107, w wydaniu nginx 1.29.8 z projektu freenginx przeniesiono dyrektyw\u0119 max_headers, kt\u00f3ra domy\u015blnie pozwala na przetwarzanie nie wi\u0119cej ni\u017c 1000 nag\u0142\u00f3wk\u00f3w. W Envoy poprawka
\nzosta\u0142a wprowadzona w wydaniach 1.35.11 i 1.36.7, w kt\u00f3rych wdro\u017cono limity mutable_max_request_headers_kb oraz max_headers_count. W Apache httpd poprawka zosta\u0142a zaproponowana w wydaniu modu\u0142u mod_http2 2.0.41, kt\u00f3ry jeszcze nie zosta\u0142 w\u0142\u0105czony w wydania Apache httpd. Dla
\nMicrosoft IIS oraz Cloudflare Pingora poprawki na razie s\u0105 niedost\u0119pne.
\nJako rozwi\u0105zanie zabezpieczaj\u0105ce mo\u017cna wy\u0142\u0105czy\u0107 u\u017cycie protoko\u0142u HTTP\/2 i ustawi\u0107 ograniczenie na rozmiar pami\u0119ci dost\u0119pnej dla proces\u00f3w roboczych.
\n
\u0179r\u00f3d\u0142o: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\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. \u041d\u0430\u043b\u0438\u0447\u0438\u0435 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u044b \u043f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u043e \u0432 HTTP-\u0441\u0435\u0440\u0432\u0435\u0440\u0430\u0445 nginx, Apache httpd (CVE-2026-49975), Microsoft IIS, Envoy (CVE-2026-47774) \u0438 Cloudflare Pingora \u0432 \u043a\u043e\u043d\u0444\u0438\u0433\u0443\u0440\u0430\u0446\u0438\u0438 \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442 \u043c\u0435\u0442\u043e\u0434, \u043d\u0430\u043f\u043e\u043c\u0438\u043d\u0430\u044e\u0449\u0438\u0439 zip-\u0431\u043e\u043c\u0431\u0443, \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u0443\u044e \u043a \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u0441\u0436\u0430\u0442\u0438\u044f \u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043a\u043e\u0432 \u0432 HTTP\/2. […]<\/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\udd47Atak na implementacje HTTP\/2, prowadz\u0105cy do wyczerpania dost\u0119pnej pami\u0119ci | ProHoster","description":"Ujawniono informacje o podatno\u015bci \u201eHTTP\/2 Bomb\u201d, dotycz\u0105cej r\u00f3\u017cnych implementacji protoko\u0142u HTTP\/2, kt\u00f3ra pozwala na przeprowadzenie ataku typu denial-of-service poprzez wyczerpanie ca\u0142ej dost\u0119pnej pami\u0119ci procesu.","canonical_url":"https:\/\/prohoster.info\/pl\/blog\/news\/ataka-na-realizaczii-http-2-privodyashhaya-k-ischerpaniyu-dostupnoj-pamyati","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"pl_PL","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\/pl\/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\/pl\/wp-json\/wp\/v2\/posts\/181899","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/pl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/pl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/pl\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/pl\/wp-json\/wp\/v2\/comments?post=181899"}],"version-history":[{"count":1,"href":"https:\/\/prohoster.info\/pl\/wp-json\/wp\/v2\/posts\/181899\/revisions"}],"predecessor-version":[{"id":182084,"href":"https:\/\/prohoster.info\/pl\/wp-json\/wp\/v2\/posts\/181899\/revisions\/182084"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/pl\/wp-json\/wp\/v2\/media?parent=181899"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/pl\/wp-json\/wp\/v2\/categories?post=181899"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/pl\/wp-json\/wp\/v2\/tags?post=181899"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}