{"id":184237,"date":"2026-11-12T11:41:47","date_gmt":"2026-11-12T09:41:47","guid":{"rendered":"https:\/\/prohoster.info\/blog\/news\/uyazvimost-v-apache-httpd-zkspluatiruemaya-dlya-udalyonnogo-vypolneniya-koda-cherez-http-2"},"modified":"2026-11-12T11:41:52","modified_gmt":"2026-11-12T09:41:52","slug":"apache-httpd-vulnerability-exploited-for-remote-code-execution-via-http-2","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/apache-httpd-vulnerability-exploited-for-remote-code-execution-via-http-2","title":{"rendered":"Zranitelnost v Apache httpd, vyu\u017e\u00edvan\u00e1 k vzd\u00e1len\u00e9mu vykon\u00e1v\u00e1n\u00ed k\u00f3du p\u0159es HTTP\/2","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Byla vydan\u00e1 verze HTTP serveru Apache 2.4.71, kter\u00e1 \u0159e\u0161\u00ed zranitelnost (CVE-2026-119618) v modulu mod_http2, p\u0159i\u010dem\u017e byla ozna\u010dena jako kritick\u00e1. Tato zranitelnost umo\u017e\u0148uje vzd\u00e1len\u00e9 spu\u0161t\u011bn\u00ed vlastn\u00edho k\u00f3du na serveru p\u0159i odesl\u00e1n\u00ed speci\u00e1ln\u011b form\u00e1tovan\u00e9ho po\u017eadavku protokolem HTTP\/2. Zranitelnost se projevuje od verz\u00ed Apache httpd 2.4.55 a tak\u00e9 se t\u00fdk\u00e1 samostatn\u00e9ho modulu mod_h2, kter\u00fd je distribuov\u00e1n prost\u0159ednictv\u00edm GitHubu. Stav oprav zranitelnost\u00ed v distribuc\u00edch lze vyhodnotit na t\u011bchto str\u00e1nk\u00e1ch: Debian, Ubuntu, SUSE, RHEL, Gentoo, Arch.
\nFedora, FreeBSD.<\/p>\n

Probl\u00e9m je zp\u016fsoben z\u00e1vodem p\u0159i sou\u010dasn\u00e9m vol\u00e1n\u00ed funkce assign_headers() z r\u016fzn\u00fdch vl\u00e1ken, co\u017e vypl\u00fdv\u00e1 z toho, \u017ee funkce zpracov\u00e1v\u00e1 strukturu sd\u00edlenou mezi v\u0161emi vl\u00e1kny (req->headers) nam\u00edsto jednotliv\u00e9 kopie pro ka\u017ed\u00e9 vl\u00e1kno (r->headers_in). P\u0159i \u00fasp\u011b\u0161n\u00e9m zneu\u017eit\u00ed m\u016f\u017ee \u00fato\u010dn\u00edk dos\u00e1hnout zm\u011bny pam\u011bti mimo vyhrazen\u00fd buffer. Zranitelnost byla p\u0159ibli\u017en\u011b ve stejnou dobu identifikov\u00e1na v\u00fdzkumn\u00edky z firem Anthropic a Google. Exploit zat\u00edm nebyl zve\u0159ejn\u011bn ve\u0159ejn\u011b. Jako obchvat pro zablokov\u00e1n\u00ed zranitelnosti sta\u010d\u00ed vypnout zpracov\u00e1n\u00ed spojen\u00ed podle protokolu HTTP\/2 v konfigura\u010dn\u00edm souboru httpd.conf pomoc\u00ed direktivy \u201eProtocols http\/1.1\u201c. <\/p>\n

Podle z\u00e1\u0159ijov\u00e9 zpr\u00e1vy spole\u010dnosti Netcraft b\u011b\u017e\u00ed na Apache httpd p\u0159ibli\u017en\u011b 170 milion\u016f web\u016f (11,56 %). Nen\u00ed v\u0161ak uvedeno, na kolika z nich se pou\u017e\u00edv\u00e1 HTTP\/2.
\n
Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0440\u0435\u043b\u0438\u0437 HTTP-\u0441\u0435\u0440\u0432\u0435\u0440\u0430 Apache 2.4.71, \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2026-119618) \u0432 \u043c\u043e\u0434\u0443\u043b\u0435 mod_http2, \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \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. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u0441\u0432\u043e\u0439 \u043a\u043e\u0434 \u043d\u0430 \u0441\u0435\u0440\u0432\u0435\u0440\u0435 \u043f\u0440\u0438 \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0435 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u0437\u0430\u043f\u0440\u043e\u0441\u0430 \u043f\u043e \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0443 HTTP\/2. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043d\u0430\u0447\u0438\u043d\u0430\u044f \u0441 \u0432\u0435\u0440\u0441\u0438\u0439 Apache httpd 2.4.55 \u0438 \u0442\u0430\u043a\u0436\u0435 \u0437\u0430\u0442\u0440\u0430\u0433\u0438\u0432\u0430\u0435\u0442 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0439 \u043c\u043e\u0434\u0443\u043b\u044c mod_h2, \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u043c\u044b\u0439 \u0447\u0435\u0440\u0435\u0437 GitHub. \u0421\u0442\u0430\u0442\u0443\u0441 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 \u0432 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-184237","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\n","aioseo_head_json":{"title":"\ud83e\udd47Zranitelnost v Apache httpd, zneu\u017e\u00edvan\u00e1 pro vzd\u00e1len\u00e9 spu\u0161t\u011bn\u00ed k\u00f3du p\u0159es HTTP\/2 | ProHoster","description":"Byla vydan\u00e1 verze HTTP serveru Apache 2.4.71, kter\u00e1 \u0159e\u0161\u00ed zranitelnost (CVE-2026-119618) v modulu mod_http2, p\u0159i\u010dem\u017e byla ozna\u010dena jako 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