{"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\/novosti-interneta\/uyazvimost-v-realizacziyah-protokola-http-2-uproshhayushhaya-provedenie-dos-atak","title":{"rendered":"HTTP\/2 protokolli rakendustes esinev haavatavus, mis lihtsustab DoS-r\u00fcnnakute l\u00e4biviimist.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Esitletakse uut r\u00fcnnetehnoloogiat HTTP\/2 protokolli realiseerimisel, mis lihtsustab teenuse keelamise r\u00fcnnakute l\u00e4biviimist serveri ressurside ammendamise kaudu. Haavatavust tuntakse koodnimega MadeYouReset ja see v\u00f5imaldab manipuleerida HTTP\/2 juhtk\u00e4ikudega, \u00fcle koormata serverit suurte p\u00e4ringute hulgaga, m\u00f6\u00f6da minnes kehtestatud piirangutest. <\/p>\n

Probleemi olemus seisneb selles, et klient suudab luua v\u00e4ga suure arvu samaaegselt t\u00f6\u00f6deldavaid vooge, olenemata SETTINGS_MAX_CONCURRENT_STREAMS limiidist, l\u00e4htestades iga voo algfaasis. Selline l\u00e4htestamine t\u00e4hendab, et uue p\u00e4ringu saatmiseks kehtivas HTTP\/2 \u00fchenduses ei pea klient ootama vastuse saamist. serverile<\/a> ja saab kohe suunata suure pideva p\u00e4ringute voolu, nii palju kui \u00fchenduse l\u00e4bilaskev\u00f5ime v\u00f5imaldab. <\/p>\n

Klient l\u00f5petab s\u00f5ltumise p\u00e4ringu saatmise ja vastuse saamise (RTT, round-trip time) viivitustest ning saab r\u00fcnnata minimaalse kulu jaotust, kuna server j\u00e4tkab sisenevate p\u00e4ringute t\u00f6\u00f6tlemiseks ressursside kulutamist. N\u00e4iteks server varustab andmestruktuure uute voogude jaoks, anal\u00fc\u00fcsib p\u00e4ringut, dekompresseerib pealkirja ja toetab URL-i ressurssidega. Tagasi p\u00f6\u00f6rdumisproksidele suunatud r\u00fcnnaku korral v\u00f5ib r\u00fcnnak laieneda tagumise plaani s\u00fcsteemidele, kuhu proksil on aega p\u00e4ring suunata enne selle t\u00fchistamist. <\/p>\n

Haavatavus meenutab varasemalt tuntud probleemi Rapid Reset (CVE-2023-44487) ja on p\u00f5hjustatud voogude t\u00fchistamise loogika lahknevusest, mis on m\u00e4\u00e4ratletud HTTP\/2 protokolli spetsifikatsioonis ja rakendatud l\u00f5ppproduktides. Spetsifikatsioon v\u00f5imaldab voogu t\u00fchistada nii kliendi kui serveri poolt igal ajal, kuid paljude HTTP\/2 rakenduste puhul -serverite<\/a> p\u00e4rast sarnast t\u00fchistamist p\u00e4ringut edasi t\u00f6\u00f6deldakse. Uue r\u00fcnnaku peamine erinevus on see, et p\u00e4ringu t\u00f6\u00f6tlemise t\u00fchistamine toimub serveri algatusel, mitte kliendi saatud RST_STREAM lipuga kaadris. <\/p>\n

Serveri algatusel toimuva l\u00e4htestamise korral toimub see valep\u00e4rase p\u00e4ringu saamisel, kuid sellised p\u00e4ringud l\u00fckatakse tagasi kohe, enne nende t\u00e4ielikku t\u00f6\u00f6tlemist ja edastamist taustteenusele. R\u00fcnnakuline isik v\u00f5ib esmalt saata korrektse HTTP-p\u00e4ringu, kuid seej\u00e4rel edasi edastada vale j\u00e4rjestuse HTTP\/2 juhtimiskaadritest. Taoline tegevus toob kaasa selle, et server hakkab p\u00e4ringut t\u00e4ielikult t\u00f6\u00f6tlema, kuid seej\u00e4rel katkestab voog (j\u00e4relkasutades korrektset p\u00e4ringut RST_STREAM olekusse).

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

Probleemi esinemine on kinnitatud HTTP-serverites Apache Tomcat, Netty, Eclipse Jetty, Fastly, Varnish, Lighttpd, Zephyr RTOS. Probleem ilmneb ka Mozilla veebisaitidel ja serveriteenustes. Apache httpd, Apache Traffic Server, Node.js, LiteSpeed ja HAProxy ei ole sellele probleemile vastuv\u00f5tlikud. Nginx'i haavatavuse seisund ei ole kindlaks tehtud.
\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-novosti-interneta"],"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\udd47 HTTP\/2 protokolli rakenduste haavatavus, mis lihtsustab DoS-r\u00fcnnakute l\u00e4biviimist | ProHoster","description":"Esitatud on uus r\u00fcnnakutehnika HTTP\/2 protokolli rakendustes, mis lihtsustab teenuset\u00f5kestus (DoS) r\u00fcnnakute l\u00e4biviimist serveri ressursside ammendamise kaudu. Haavatavus sai koodnimeks MadeYouReset ja v\u00f5imaldab HTTP\/2 juhtivate raamide manipuleerimise kaudu \u00fcle ujutada serverit suure hulga p\u00e4ringutega, m\u00f6\u00f6da minnes seatud piirangutest. Probleem seisneb selles, et klient v\u00f5ib luua v\u00e4ga suure arvu samaaegselt t\u00f6\u00f6deldavaid vooge,","canonical_url":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/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. \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 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