{"id":121724,"date":"2025-02-06T09:46:03","date_gmt":"2025-02-06T07:46:03","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/obnovleniya-nginx-1-26-3-i-1-27-4-s-ustraneniem-uyazvimosti-svyazannoj-s-tls"},"modified":"2025-02-06T09:46:03","modified_gmt":"2025-02-06T07:46:03","slug":"obnovleniya-nginx-1-26-3-i-1-27-4-s-ustraneniem-uyazvimosti-svyazannoj-s-tls","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/obnovleniya-nginx-1-26-3-i-1-27-4-s-ustraneniem-uyazvimosti-svyazannoj-s-tls","title":{"rendered":"Aktualizace nginx 1.26.3 a 1.27.4 odstra\u0148uj\u00edc\u00ed zranitelnost souvisej\u00edc\u00ed s TLS","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Bylo vyd\u00e1no hlavn\u00ed vyd\u00e1n\u00ed nginx 1.27.4, kter\u00e9 pokra\u010duje v rozvoji nov\u00fdch funkc\u00ed, stejn\u011b jako byl vyd\u00e1n paraleln\u011b udr\u017eovan\u00fd stabiln\u00ed v\u011btev nginx 1.26.3, do kter\u00e9 jsou prov\u00e1d\u011bny pouze \u00fapravy souvisej\u00edc\u00ed s odstran\u011bn\u00edm z\u00e1va\u017en\u00fdch chyb a zranitelnost\u00ed. V aktualizac\u00edch byla odstran\u011bna zranitelnost (CVE-2025-23419), kter\u00e1 umo\u017e\u0148uje obej\u00edt kontrolu klientsk\u00fdch TLS certifik\u00e1t\u016f.       <\/p>\n<p>Zranitelnost je zp\u016fsobena nedostatkem \u0159\u00e1dn\u00fdch kontrol p\u0159i zpracov\u00e1n\u00ed virtu\u00e1ln\u00edch hostitel\u016f p\u0159ipojen\u00fdch k jedn\u00e9 IP adrese a portu, vyb\u00edran\u00fdch p\u0159i p\u0159\u00edstupu p\u0159es HTTPS na z\u00e1klad\u011b n\u00e1zvu dom\u00e9ny uveden\u00e9ho pomoc\u00ed roz\u0161\u00ed\u0159en\u00ed SNI v TLS. V takov\u00fdch konfigurac\u00edch mohl \u00fato\u010dn\u00edk opakovan\u011b vyu\u017e\u00edt TLS seanci v kontextu jin\u00e9ho virtu\u00e1ln\u00edho hostitele k obch\u00e1zen\u00ed autentizace pomoc\u00ed klientsk\u00e9ho TLS certifik\u00e1tu. Probl\u00e9m se projevuje v konfigurac\u00edch, kter\u00e9 podporuj\u00ed obnovu TLS seanc\u00ed pomoc\u00ed \u201eTLS session ticket\u201c nebo pou\u017e\u00edvaj\u00ed cache TLS seanc\u00ed v nastaven\u00ed. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/cs\/server\/dts-los-angeles\/\"   title=\"serveru\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3903\">serveru<\/a> v\u00fdchoz\u00edho nastaven\u00ed, kde se pou\u017e\u00edv\u00e1 autentizace pomoc\u00ed klientsk\u00fdch TLS certifik\u00e1t\u016f. Zranitelnost je p\u0159\u00edtomna od vyd\u00e1n\u00ed nginx 1.11.4 p\u0159i kompilaci s OpenSSL a zapnut\u00edm protokolu TLSv1.3.     <\/p>\n<p>Zm\u011bny nesouvisej\u00edc\u00ed se zabezpe\u010den\u00edm:  <\/p>\n<ul>\n<li class=\"l\"> Byly p\u0159id\u00e1ny funkce ke sn\u00ed\u017een\u00ed spot\u0159eby zdroj\u016f a zmen\u0161en\u00ed z\u00e1t\u011b\u017ee CPU p\u0159i pou\u017e\u00edv\u00e1n\u00ed TLS v konfigurac\u00edch s velk\u00fdm po\u010dtem blok\u016f server a location. P\u0159idan\u00e9 zm\u011bny umo\u017e\u0148uj\u00ed m\u00edsto vytv\u00e1\u0159en\u00ed samostatn\u00e9ho SSL kontextu (SSL_CTX v OpenSSL) pro ka\u017ed\u00fd konfigura\u010dn\u00ed blok vyu\u017e\u00edt ji\u017e existuj\u00edc\u00ed SSL kontext z nad\u0159azen\u00e9ho bloku.\n<li class=\"l\"> Byly vy\u0159e\u0161eny probl\u00e9my s dlouh\u00fdm na\u010d\u00edt\u00e1n\u00edm konfigura\u010dn\u00edch soubor\u016f kv\u016fli opakovan\u00e9mu parsov\u00e1n\u00ed stejn\u00fdch sad <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/cs\/ssl-sertifikat\/\"   title=\"TLS certifik\u00e1t\u016f\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"966\">TLS certifik\u00e1t\u016f<\/a>, kl\u00ed\u010d\u016f a seznam\u016f certifika\u010dn\u00edch autorit. Rychlej\u0161\u00ed restart konfigurace d\u00edky op\u011btovn\u00e9mu pou\u017eit\u00ed nezm\u011bn\u011bn\u00fdch TLS objekt\u016f, jako jsou certifik\u00e1ty, kl\u00ed\u010de a CRL. Pro vypnut\u00ed d\u011bd\u011bn\u00ed objekt\u016f p\u0159i aktualizaci konfigurace byla p\u0159id\u00e1na direktiva \u201essl_object_cache_inheritable\u201c.\n<li class=\"l\"> Byl p\u0159id\u00e1n cache pro certifik\u00e1ty a kl\u00ed\u010de na\u010dten\u00e9 pomoc\u00ed prom\u011bnn\u00fdch v direktiv\u00e1ch (nap\u0159\u00edklad &#171;ssl_certificate \/etc\/ssl\/$ssl_server_name.crt&#187;). Pro spr\u00e1vu cache byly p\u0159id\u00e1ny direktivy &#171;ssl_certificate_cache&#187;, &#171;proxy_ssl_certificate_cache&#187;, &#171;grpc_ssl_certificate_cache&#187; a &#171;uwsgi_ssl_certificate_cache&#187;. P\u0159es uveden\u00e9 direktivy lze nastavit maxim\u00e1ln\u00ed velikost cache, dobu platnosti z\u00e1znam\u016f a \u010das na vy\u010di\u0161t\u011bn\u00ed nepou\u017e\u00edvan\u00fdch z\u00e1znam\u016f. Nap\u0159\u00edklad: &#171;ssl_certificate_cache max=1000 inactive=20s valid=1m;&#187;.\n<li class=\"l\"> Byla p\u0159id\u00e1na direktiva &#171;keepalive_min_timeout&#187;, kter\u00e1 ur\u010duje \u010dasov\u00fd limit, po kter\u00fd nginx nebude uzav\u00edrat keep-alive p\u0159ipojen\u00ed se z\u00e1kazn\u00edkem.\n<li class=\"l\"> Byl vy\u0159e\u0161en probl\u00e9m s objevuj\u00edc\u00edmi se logy zpr\u00e1v \u201egzip filter failed to use preallocated memory\u201c p\u0159i sestavov\u00e1n\u00ed s knihovnou zlib-ng.\n<li class=\"l\"> Byl vy\u0159e\u0161en probl\u00e9m se sestaven\u00edm knihovny libatomic p\u0159i pou\u017eit\u00ed konfigura\u010dn\u00ed volby \u201e--with-libatomic=DIR\u201c.\n<li class=\"l\"> Byla odstran\u011bna chyba, kter\u00e1 br\u00e1nila nav\u00e1z\u00e1n\u00ed spojen\u00ed pomoc\u00ed protokolu QUIC p\u0159i pou\u017eit\u00ed 0-RTT.\n<li class=\"l\"> Bylo zaji\u0161t\u011bno ignorov\u00e1n\u00ed \u017e\u00e1dost\u00ed o vyjedn\u00e1v\u00e1n\u00ed verz\u00ed QUIC p\u0159ich\u00e1zej\u00edc\u00edch od klient\u016f.\n<li class=\"l\"> Byly vy\u0159e\u0161eny probl\u00e9my se sestavov\u00e1n\u00edm v Solaris 10 s modulem ngx_http_v3_module.\n<li class=\"l\"> Opraveny chyby v implementaci HTTP\/3.    <\/ul>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=62679\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u043e\u0441\u043d\u043e\u0432\u043d\u043e\u0439 \u0432\u0435\u0442\u043a\u0438 nginx 1.27.4, \u0432 \u0440\u0430\u043c\u043a\u0430\u0445 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0430\u0435\u0442\u0441\u044f \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u0435 \u043d\u043e\u0432\u044b\u0445 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0435\u0439, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0432\u044b\u043f\u0443\u0441\u043a \u043f\u0430\u0440\u0430\u043b\u043b\u0435\u043b\u044c\u043d\u043e \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u043c\u043e\u0439 \u0441\u0442\u0430\u0431\u0438\u043b\u044c\u043d\u043e\u0439 \u0432\u0435\u0442\u043a\u0438 nginx 1.26.3, \u0432 \u043a\u043e\u0442\u043e\u0440\u0443\u044e \u0432\u043d\u043e\u0441\u044f\u0442\u0441\u044f \u0442\u043e\u043b\u044c\u043a\u043e \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f, \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u0435 \u0441 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0435\u043c \u0441\u0435\u0440\u044c\u0451\u0437\u043d\u044b\u0445 \u043e\u0448\u0438\u0431\u043e\u043a \u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439. \u0412 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f\u0445 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2025-23419), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043e\u0431\u043e\u0439\u0442\u0438 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0443 \u043a\u043b\u0438\u0435\u043d\u0442\u0441\u043a\u0438\u0445 TLS-\u0441\u0435\u0440\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0432. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432\u044b\u0437\u0432\u0430\u043d\u0430 \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0438\u0435\u043c \u0434\u043e\u043b\u0436\u043d\u044b\u0445 \u043f\u0440\u043e\u0432\u0435\u0440\u043e\u043a \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u044b\u0445 \u0445\u043e\u0441\u0442\u043e\u0432, \u043f\u0440\u0438\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u0445 \u043a [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-121724","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0421\u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u043e\u0441\u043d\u043e\u0432\u043d\u043e\u0439 \u0432\u0435\u0442\u043a\u0438 nginx 1.27.4, \u0432 \u0440\u0430\u043c\u043a\u0430\u0445 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0430\u0435\u0442\u0441\u044f \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u0435 \u043d\u043e\u0432\u044b\u0445 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