{"id":140668,"date":"2025-08-14T11:12:07","date_gmt":"2025-08-14T09:12:07","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-realizacziyah-protokola-http-2-uproshhayushhaya-provedenie-dos-atak"},"modified":"2025-08-14T11:12:07","modified_gmt":"2025-08-14T09:12:07","slug":"uyazvimost-v-realizacziyah-protokola-http-2-uproshhayushhaya-provedenie-dos-atak","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/uyazvimost-v-realizacziyah-protokola-http-2-uproshhayushhaya-provedenie-dos-atak","title":{"rendered":"HTTP\/2 protokollide teostustes olev turvahaigus, mis lihtsustab DoS-r\u00fcnnakute l\u00e4biviimist","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Esitati uus r\u00fcnnaku tehnika HTTP\/2 protokollide teostuste vastu, mis lihtsustab teenuse keelamise r\u00fcnnakute rakendamist serveri ressursside ammendamises. Turvahaigus sai koodnimeks MadeYouReset ja v\u00f5imaldab manipuleerimise kaudu HTTP\/2 juhtkarkassidega \u00fcle ujutada server mitmete p\u00e4ringutega, m\u00f6\u00f6daminnes kehtestatud piirangutest. <\/p>\n

Probleemi olemus seisneb selles, et klient saab luua \u00fcheaegselt t\u00f6\u00f6tavate voogude v\u00e4ga suure arvu, s\u00f5ltumata SETTINGS_MAX_CONCURRENT_STREAMS piirangust, l\u00e4htestades iga voo alguses. Taoline l\u00e4htestamine t\u00e4hendab, et uue p\u00e4ringu edastamiseks kehtestatud HTTP\/2 \u00fchenduses ei pea klient ootama vastust serverilt<\/a> ja saab kohe suunata suure pideva p\u00e4ringute voo, nii palju kui sidetehnoloogia l\u00e4bilaskev\u00f5ime lubab. <\/p>\n

Klient enam ei s\u00f5ltu p\u00e4ringu saatmise ja vastuse saamise viivitustest (RTT, round-trip time) ning saab r\u00fcnnaku sooritada minimaalse lisakuluga, samal ajal kui server j\u00e4tkab ressursside kulutamist saabuvate p\u00e4ringute t\u00f6\u00f6tlemiseks. N\u00e4iteks server eraldab andmestruktuure uute voogude jaoks, anal\u00fc\u00fcsib p\u00e4ringut, avab pead ja seob URL-i ressursiga. Tagasiportide r\u00fcnnaku korral v\u00f5ib r\u00fcnnak levida tausts\u00fcsteemidele, kuhu port suudab suunata p\u00e4ringu enne selle l\u00e4htestamist. <\/p>\n

Turvahaigus meenutab varasemalt tuntud probleemi Rapid Reset (CVE-2023-44487) ja on tingitud voogude l\u00e4htestamise loogika lahknevusest, nagu see on m\u00e4\u00e4ratletud HTTP\/2 protokolli spetsifikatsioonis ja rakendatud l\u00f5pp-produktides. Spetsifikatsioon v\u00f5imaldab voo l\u00e4htestamist nii kliendi kui ka serveri poolt igal ajal, kuid paljudes HTTP\/2 teostustesserverid<\/a> p\u00e4rast taolist l\u00e4htestamist p\u00e4ring j\u00e4tkab t\u00f6\u00f6tlemist. Uue r\u00fcnnaku peamine erinevus on see, et p\u00e4ringu t\u00f6\u00f6tlemise l\u00e4htestamine toimub serveri algatusel, mitte kliendi poolt RST_STREAM lipuga kaadri saatmise teel. <\/p>\n

Server-initiated reset occurs when invalid requests are received, but such requests are immediately discarded without being fully processed or passed to the backend. To complete the request processing cycle, an attacker can first send a valid HTTP request and then follow it with an incorrect sequence of control frames in HTTP\/2. Such activity will cause the server to start processing the request properly, but due to an error in handling the subsequent frames, it will reset the stream (changing the stream with the valid request to the RST_STREAM state).

\"HTTP\/2<\/center> <\/p>\n

The issue has been confirmed in HTTP servers such as Apache Tomcat, Netty, Eclipse Jetty, Fastly, Varnish, Lighttpd, and Zephyr RTOS. The problem also manifests on websites and server services by Mozilla. Apache httpd, Apache Traffic Server, Node.js, LiteSpeed, and HAProxy are not susceptible to this issue. The status of the vulnerability in Nginx is currently undetermined.
\n
Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0430 \u043d\u043e\u0432\u0430\u044f \u0442\u0435\u0445\u043d\u0438\u043a\u0430 \u0430\u0442\u0430\u043a\u0438 \u043d\u0430 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 HTTP\/2, \u0443\u043f\u0440\u043e\u0449\u0430\u044e\u0449\u0430\u044f \u043f\u0440\u043e\u0432\u0435\u0434\u0435\u043d\u0438\u0435 \u0430\u0442\u0430\u043a \u0434\u043b\u044f \u0432\u044b\u0437\u043e\u0432\u0430 \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 \u0440\u0435\u0441\u0443\u0440\u0441\u043e\u0432 \u0441\u0435\u0440\u0432\u0435\u0440\u0430. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u043e\u043b\u0443\u0447\u0438\u043b\u0430 \u043a\u043e\u0434\u043e\u0432\u043e\u0435 \u0438\u043c\u044f MadeYouReset \u0438 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0447\u0435\u0440\u0435\u0437 \u043c\u0430\u043d\u0438\u043f\u0443\u043b\u044f\u0446\u0438\u0438 \u0443\u043f\u0440\u0430\u0432\u043b\u044f\u044e\u0449\u0438\u043c\u0438 \u043a\u0430\u0434\u0440\u0430\u043c\u0438 HTTP\/2 \u043d\u0430\u0432\u043e\u0434\u043d\u0438\u0442\u044c \u0441\u0435\u0440\u0432\u0435\u0440 \u0431\u043e\u043b\u044c\u0448\u0438\u043c \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e\u043c \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432 \u0432 \u043e\u0431\u0445\u043e\u0434 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d\u043d\u044b\u0445 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u0439. \u0421\u0443\u0442\u044c \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u044b \u0432 \u0442\u043e\u043c, \u0447\u0442\u043e \u043a\u043b\u0438\u0435\u043d\u0442 \u043c\u043e\u0436\u0435\u0442 \u0441\u043e\u0437\u0434\u0430\u0442\u044c \u043e\u0447\u0435\u043d\u044c \u0431\u043e\u043b\u044c\u0448\u043e\u0435 \u0447\u0438\u0441\u043b\u043e \u043e\u0434\u043d\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u043e \u043e\u0431\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u0435\u043c\u044b\u0445 \u043f\u043e\u0442\u043e\u043a\u043e\u0432, […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":140669,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-140668","post","type-post","status-publish","format-standard","has-post-thumbnail","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\udd47HTTP\/2 protokolli rakenduste haavatavus, mis lihtsustab DoS-r\u00fcnnakute l\u00e4biviimist | ProHoster","description":"Esitatud uus r\u00fcndetehnika HTTP\/2 protokolli rakenduste suhtes, mis lihtsustab teenusek\u00e4ttesaamatuse r\u00fcnnakute l\u00e4biviimist serveri ressursi ammendamise kaudu.","canonical_url":"https:\/\/prohoster.info\/et\/blog\/news\/uyazvimost-v-realizacziyah-protokola-http-2-uproshhayushhaya-provedenie-dos-atak","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"et_EE","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 \u0432 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f\u0445 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 HTTP\/2, \u0443\u043f\u0440\u043e\u0449\u0430\u044e\u0449\u0430\u044f \u043f\u0440\u043e\u0432\u0435\u0434\u0435\u043d\u0438\u0435 DoS-\u0430\u0442\u0430\u043a | ProHoster","og:description":"\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0430 \u043d\u043e\u0432\u0430\u044f \u0442\u0435\u0445\u043d\u0438\u043a\u0430 \u0430\u0442\u0430\u043a\u0438 \u043d\u0430 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 HTTP\/2, \u0443\u043f\u0440\u043e\u0449\u0430\u044e\u0449\u0430\u044f \u043f\u0440\u043e\u0432\u0435\u0434\u0435\u043d\u0438\u0435 \u0430\u0442\u0430\u043a \u0434\u043b\u044f \u0432\u044b\u0437\u043e\u0432\u0430 \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 \u0440\u0435\u0441\u0443\u0440\u0441\u043e\u0432 \u0441\u0435\u0440\u0432\u0435\u0440\u0430.","og:url":"https:\/\/prohoster.info\/et\/blog\/news\/uyazvimost-v-realizacziyah-protokola-http-2-uproshhayushhaya-provedenie-dos-atak","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":"2025-08-14T09:12:07+00:00","article:modified_time":"2025-08-14T09:12:07+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"140668","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":"2026-02-22 15:52:24","breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2026-01-23 14:15:21","updated":"2026-02-22 15:52:24","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/posts\/140668","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/comments?post=140668"}],"version-history":[{"count":2,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/posts\/140668\/revisions"}],"predecessor-version":[{"id":162504,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/posts\/140668\/revisions\/162504"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/media\/140669"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/media?parent=140668"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/categories?post=140668"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/tags?post=140668"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}