{"id":163792,"date":"2026-03-10T23:11:57","date_gmt":"2026-03-10T21:11:59","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimosti-v-proekte-pingora-pozvolyayushhie-vklinitsya-v-storonnie-zaprosy"},"modified":"2026-03-10T23:11:57","modified_gmt":"2026-03-10T21:11:59","slug":"uyazvimosti-v-proekte-pingora-pozvolyayushhie-vklinitsya-v-storonnie-zaprosy","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/news\/uyazvimosti-v-proekte-pingora-pozvolyayushhie-vklinitsya-v-storonnie-zaprosy","title":{"rendered":"Zranite\u013enosti v projekte Pingora, ktor\u00e9 umo\u017e\u0148uj\u00fa zasahova\u0165 do extern\u00fdch po\u017eiadaviek","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Spolo\u010dnos\u0165 Cloudflare ozn\u00e1mila odstr\u00e1nenie troch zranite\u013enost\u00ed vo frameworku Pingora, z ktor\u00fdch dve maj\u00fa kritick\u00fa \u00farove\u0148 z\u00e1va\u017enosti (9.3 zo 10). Framework Pingora je nap\u00edsan\u00fd v jazyku Rust a je ur\u010den\u00fd na v\u00fdvoj zabezpe\u010den\u00fdch, vysoko v\u00fdkonn\u00fdch sie\u0165ov\u00fdch slu\u017eieb. Proxy postaven\u00e1 pomocou Pingora sa pou\u017e\u00edva v sieti na dod\u00e1vku obsahu Cloudflare a spracov\u00e1va viac ako 40 mili\u00f3nov po\u017eiadaviek za sekundu. Zranite\u013enosti boli odstr\u00e1nen\u00e9 vo vydan\u00ed Pingora 0.8.0. <\/p>\n

Dve najnebezpe\u010dnej\u0161ie zranite\u013enosti umo\u017e\u0148uj\u00fa vykon\u00e1va\u0165 \u00fatoky typu \u201eHTTP Request Smuggling\u201c, ktor\u00e9 umo\u017e\u0148uj\u00fa obch\u00e1dza\u0165 syst\u00e9my obmedzenia pr\u00edstupu a zasahova\u0165 do obsahu po\u017eiadaviek in\u00fdch pou\u017e\u00edvate\u013eov spracov\u00e1van\u00fdch v tej istej vetve medzi frontendom a backendom (napr\u00edklad na vlo\u017eenie \u0161kodliv\u00e9ho JavaScript k\u00f3du do rel\u00e1cie in\u00e9ho pou\u017e\u00edvate\u013ea so str\u00e1nkou). Probl\u00e9my boli identifikovan\u00e9 \u00fa\u010dastn\u00edkom programu Bug Bounty, ktor\u00fd poskytuje odmenu za zistenie zranite\u013enost\u00ed. <\/p>\n

V sch\u00e9me s pr\u00edstupom na backend cez reverzn\u00fd proxy prij\u00edma po\u017eiadavky klientov \u010fal\u0161\u00ed uzol, ktor\u00fd vytv\u00e1ra dlhodob\u00e9 TCP spojenie s backendom, ktor\u00fd vykon\u00e1va okam\u017eit\u00e9 spracovanie po\u017eiadaviek. Skrze toto spolo\u010dn\u00e9 spojenie sa zvy\u010dajne pren\u00e1\u0161aj\u00fa po\u017eiadavky r\u00f4znych pou\u017e\u00edvate\u013eov, ktor\u00e9 nasleduj\u00fa po sebe jeden za druh\u00fdm s oddelen\u00edm prostredn\u00edctvom protkolu HTTP. \u00datoky typu HTTP Request Smuggling vznikaj\u00fa z r\u00f4zneho v\u00fdkladu HTTP hlavi\u010diek a \u0161pecifik\u00e1ci\u00ed protokolu HTTP na frontendoch a backendoch, napr\u00edklad ke\u010f frontend pou\u017e\u00edva na ur\u010denie ve\u013ekosti po\u017eiadavky HTTP hlavi\u010dku \u201eContent-Length\u201c, zatia\u013e \u010do backend \u201eTransfer-Encoding: chunked\u201c. <\/p>\n

Prv\u00e1 zranite\u013enos\u0165 CVE-2026-2835 sa nach\u00e1dza v k\u00f3de pre anal\u00fdzu po\u017eiadaviek HTTP\/1.0 a je sp\u00f4soben\u00e1 nespr\u00e1vnym spracovan\u00edm hlavi\u010dky \u201eTransfer-Encoding\u201c s viacer\u00fdmi hodnotami, ako aj pou\u017e\u00edvan\u00edm uzavretia spojenia ako znaku konca tela po\u017eiadavky (close-delimited). Pingora kontrolovala len variantu \u201eTransfer-Encoding: chunked\u201c a ignorovala t\u00fato hlavi\u010dku, ak v nej bola uveden\u00e1 viacer\u00e9 hodnoty. V tejto situ\u00e1cii Pingora nezoh\u013ead\u0148ovala ve\u013ekos\u0165 v hlavi\u010dke \u201eContent-Length\u201c, ale pova\u017eovala v\u0161etky \u00fadaje prijat\u00e9 do uzavretia spojenia za telo po\u017eiadavky. <\/p>\n

Pomocou uvedenia viacer\u00fdch hodn\u00f4t v hlavi\u010dke \u201eTransfer-Encoding\u201c mohol \u00fato\u010dn\u00edk vytvori\u0165 podmienky, za ktor\u00fdch sa na backend presmeroval po\u017eiadavok, ktor\u00e9ho skuto\u010dn\u00e1 ve\u013ekos\u0165 nezhodovala s ve\u013ekos\u0165ou chunked-re\u0165azca vypo\u010d\u00edtanou na z\u00e1klade hlavi\u010dky \u201eTransfer-Encoding\u201c. Pingora presmerovala v\u0161etky prijat\u00e9 \u00fadaje ako jednu po\u017eiadavku, zatia\u013e \u010do backend, napr\u00edklad Node.js, vypo\u010d\u00edtal po\u017eiadavku na z\u00e1klade \u201eTransfer-Encoding: chunked\u201c a zvy\u0161ok spracoval ako za\u010diatok inej po\u017eiadavky. GET \/ HTTP\/1.0 Host: example.com Connection: keep-alive Transfer-Encoding: identity, chunked Content-Length: 29 0 GET \/admin HTTP\/1.1 X:

\"Zranite\u013enosti<\/center> <\/p>\n

Druh\u00e1 zranite\u013enos\u0165 CVE-2026-2833 je sp\u00f4soben\u00e1 nespr\u00e1vnym spracovan\u00edm HTTP hlavi\u010dky «Upgrade» v po\u017eiadavk\u00e1ch HTTP\/1.1. Ak je v po\u017eiadavke pr\u00edtomn\u00e1 hlavi\u010dka «Upgrade», proxy okam\u017eite prep\u00fa\u0161\u0165ala k backendu aj ostatn\u00e9 \u00fadaje \u017eiadosti, nasleduj\u00face po hlavi\u010dke «Upgrade», ani\u017e by \u010dakali na odpove\u010f od backendu s k\u00f3dom 101 (Switching Protocols). Z tohto d\u00f4vodu sa naru\u0161ila synchroniz\u00e1cia toku medzi proxy a backendom a backend vn\u00edmal \u00fadaje odoslan\u00e9 po hlavi\u010dke «Upgrade» ako samostatn\u00fa po\u017eiadavku a posielal v\u00fdsledok vykonania tejto po\u017eiadavky ako odpove\u010f na prich\u00e1dzaj\u00facu po\u017eiadavku od in\u00e9ho pou\u017e\u00edvate\u013ea. GET \/ HTTP\/1.1 Host: example.com Upgrade: foo GET \/admin HTTP\/1.1 Host: example.com

\"Zranite\u013enosti<\/center>
\"Zranite\u013enosti<\/center> <\/p>\n

Probl\u00e9my sa prejavuj\u00fa pri pou\u017e\u00edvan\u00ed Pingora vo forme reverznej proxy (ingress proxy), ktor\u00e1 prev\u00e1dza po\u017eiadavky pou\u017e\u00edvate\u013eov na backendy s pou\u017eit\u00edm protokolov HTTP\/1.0 alebo HTTP\/1.1. Pou\u017e\u00edvan\u00e1 v sieti doru\u010dovania obsahu Cloudflare konfigur\u00e1cia Pingora neumo\u017e\u0148ovala zneu\u017eitie zranite\u013enost\u00ed, preto\u017ee Pingora v CDN nie je pou\u017eit\u00e1 ako ingress-proxy, presmerov\u00e1va po\u017eiadavky iba s pou\u017eit\u00edm protokolu HTTP\/1.1, blokuje po\u017eiadavky s nespr\u00e1vnymi hodnotami Content-Length, presmerov\u00e1va iba jednu hodnotu hlavi\u010dky «Transfer-Encoding: chunked» a prid\u00e1va do po\u017eiadaviek s hlavi\u010dkou «Upgrade:» dodato\u010dn\u00fa hlavi\u010dku «Connection: close», ktor\u00e1 neumo\u017e\u0148uje odosiela\u0165 \u010fal\u0161ie po\u017eiadavky v tom istom spojen\u00ed. <\/p>\n

Tretia zranite\u013enos\u0165 CVE-2026-2836 (stupe\u0148 nebezpe\u010denstva 8.4 z 10) vedie k otrave cache (cache poisoning) z d\u00f4vodu generovania k\u013e\u00fa\u010da na umiestnenie \u00fadajov v cache (CacheKey) iba na z\u00e1klade cesty z URI, pri\u010dom ignoruje obsah hlavi\u010dky «Host». Tak\u00e1to nedokonalos\u0165 vedie k vytv\u00e1raniu rovnak\u00fdch k\u013e\u00fa\u010dov cache pre rovnak\u00e9 HTTP cesty k r\u00f4znym hostite\u013eom. Zranite\u013enos\u0165 sa m\u00f4\u017ee vyu\u017ei\u0165 na zmenu obsahu cache pri pou\u017e\u00edvan\u00ed re\u017eimu cache pre viacero hostite\u013eov. V Pingora je caching experiment\u00e1lnou funkciou, ktor\u00e1 nie je odpor\u00fa\u010dan\u00e1 na pracovn\u00e9 nasadenia.
\n
Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Cloudflare \u043e\u0431\u044a\u044f\u0432\u0438\u043b\u0430 \u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0438 \u0442\u0440\u0451\u0445 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 \u0432\u043e \u0444\u0440\u0435\u0439\u043c\u0432\u043e\u0440\u043a\u0435 Pingora, \u0434\u0432\u0443\u043c \u0438\u0437 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u043f\u0440\u0438\u0441\u0432\u043e\u0435\u043d \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (9.3 \u0438\u0437 10). \u0424\u0440\u0435\u0439\u043c\u0432\u043e\u0440\u043a Pingora \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 Rust \u0438 \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d \u0434\u043b\u044f \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0437\u0430\u0449\u0438\u0449\u0451\u043d\u043d\u044b\u0445 \u0432\u044b\u0441\u043e\u043a\u043e\u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0445 \u0441\u0435\u0442\u0435\u0432\u044b\u0445 \u0441\u0435\u0440\u0432\u0438\u0441\u043e\u0432. \u041f\u043e\u0441\u0442\u0440\u043e\u0435\u043d\u043d\u044b\u0439 \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 Pingora \u043f\u0440\u043e\u043a\u0441\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u0432 \u0441\u0435\u0442\u0438 \u0434\u043e\u0441\u0442\u0430\u0432\u043a\u0438 \u043a\u043e\u043d\u0442\u0435\u043d\u0442\u0430 Cloudflare \u0438 \u043e\u0431\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u0435\u0442 \u0431\u043e\u043b\u0435\u0435 40 \u043c\u043b\u043d \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432 \u0432 \u0441\u0435\u043a\u0443\u043d\u0434\u0443. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":8,"featured_media":163793,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-163792","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\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\u013enosti v projekte Pingora, ktor\u00e9 umo\u017e\u0148uj\u00fa zasahova\u0165 do extern\u00fdch po\u017eiadaviek | ProHoster","description":"Spolo\u010dnos\u0165 Cloudflare ozn\u00e1mila opravu troch zranite\u013enost\u00ed vo frameworku Pingora, dvom z nich bola priraden\u00e1 kritick\u00e1 \u00farove\u0148 nebezpe\u010denstva (9.3 z 10).","canonical_url":"https:\/\/prohoster.info\/sk\/blog\/news\/uyazvimosti-v-proekte-pingora-pozvolyayushhie-vklinitsya-v-storonnie-zaprosy","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\u0438 \u0432 \u043f\u0440\u043e\u0435\u043a\u0442\u0435 Pingora, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0435 \u0432\u043a\u043b\u0438\u043d\u0438\u0442\u044c\u0441\u044f \u0432 \u0441\u0442\u043e\u0440\u043e\u043d\u043d\u0438\u0435 \u0437\u0430\u043f\u0440\u043e\u0441\u044b | 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