{"id":101281,"date":"2021-09-16T22:22:47","date_gmt":"2021-09-16T20:22:47","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/reliz-http-servera-apache-2-4-49-s-ustraneniem-uyazvimostej"},"modified":"2021-09-16T22:22:47","modified_gmt":"2021-09-16T20:22:47","slug":"reliz-http-servera-apache-2-4-49-s-ustraneniem-uyazvimostej","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/reliz-http-servera-apache-2-4-49-s-ustraneniem-uyazvimostej","title":{"rendered":"Vyd\u00e1n\u00ed http-serveru Apache 2.4.49, kter\u00e9 odstra\u0148uje zranitelnosti.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Byl vyd\u00e1n nov\u00fd release HTTP serveru Apache 2.4.49, kter\u00fd obsahuje 27 zm\u011bn a opravuje 5 zranitelnost\u00ed:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2021-33193 \u2014 zranitelnost mod_http2 v\u016f\u010di nov\u00e9mu typu \u00fatoku \u201eHTTP Request Smuggling\u201c, kter\u00e1 umo\u017e\u0148uje zaslat speci\u00e1ln\u011b form\u00e1tovan\u00e9 klientsk\u00e9 po\u017eadavky a vkl\u00e1dat obsah \u017e\u00e1dost\u00ed jin\u00fdch u\u017eivatel\u016f, kter\u00e9 jsou p\u0159ed\u00e1v\u00e1ny prost\u0159ednictv\u00edm mod_proxy (nap\u0159\u00edklad lze dos\u00e1hnout vlo\u017een\u00ed \u0161kodliv\u00e9ho JavaScriptov\u00e9ho k\u00f3du do relace jin\u00e9ho u\u017eivatele webu).\n<li class=\"l\"> CVE-2021-40438 \u2014 zranitelnost SSRF (Server Side Request Forgery) v mod_proxy, kter\u00e1 umo\u017e\u0148uje zasl\u00e1n\u00edm speci\u00e1ln\u011b form\u00e1tovan\u00e9ho po\u017eadavku uri-path p\u0159esm\u011brov\u00e1n\u00ed po\u017eadavku na server vybran\u00fd \u00fato\u010dn\u00edkem.\n<li class=\"l\"> CVE-2021-39275 \u2014 p\u0159ete\u010den\u00ed vyrovn\u00e1vac\u00ed pam\u011bti ve funkci ap_escape_quotes. Zranitelnost je ozna\u010dena jako bezpe\u010dn\u00e1, proto\u017ee v\u0161echny standardn\u00ed moduly nep\u0159ed\u00e1vaj\u00ed extern\u00ed data t\u00e9to funkci. Teoreticky v\u0161ak mohou existovat t\u0159et\u00ed strany, skrze kter\u00e9 je mo\u017en\u00e9 prov\u00e9st \u00fatok.\n<li class=\"l\"> CVE-2021-36160 \u2014 \u010dten\u00ed z oblasti mimo mez\u00ed vyrovn\u00e1vac\u00ed pam\u011bti v modulu mod_proxy_uwsgi, co\u017e vede k hav\u00e1rii.\n<li class=\"l\"> CVE-2021-34798 \u2014 dereference null pointer, co\u017e zp\u016fsobuje hav\u00e1rii procesu p\u0159i zpracov\u00e1n\u00ed speci\u00e1ln\u011b form\u00e1tovan\u00fdch po\u017eadavk\u016f.        <\/li>\n<\/ul>\n<p>Nejv\u00fdznamn\u011bj\u0161\u00ed zm\u011bny, kter\u00e9 nejsou spojeny s bezpe\u010dnost\u00ed:   <\/p>\n<ul>\n<li class=\"l\"> Bylo provedeno \u0159ada intern\u00edch zm\u011bn v mod_ssl. Nastaven\u00ed \u201essl_engine_set\u201c, \u201essl_engine_disable\u201c a \u201essl_proxy_enable\u201c byly p\u0159esunuty z mod_ssl do hlavn\u00ed \u010d\u00e1sti (core). Byla poskytnuta mo\u017enost pou\u017eit\u00ed alternativn\u00edch. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/cs\/ssl-sertifikat\/\"   title=\"SSL\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2294\">SSL<\/a>-modul\u016f pro zabezpe\u010den\u00ed spojen\u00ed prost\u0159ednictv\u00edm mod_proxy. P\u0159id\u00e1na mo\u017enost veden\u00ed z\u00e1znamu uzav\u0159en\u00fdch kl\u00ed\u010d\u016f, kter\u00fd lze pou\u017e\u00edt v wiresharku pro anal\u00fdzu \u0161ifrovan\u00e9ho provozu.\n<li class=\"l\"> V mod_proxy byl urychlen parsing cest s unix sockety p\u0159ed\u00e1van\u00fdmi v URL \u201eproxy:\u201c.\n<li class=\"l\"> Funkce mod_md, pou\u017e\u00edvan\u00e1 k automatizaci z\u00edsk\u00e1v\u00e1n\u00ed a \u00fadr\u017eby certifik\u00e1t\u016f pomoc\u00ed protokolu ACME (Automatic Certificate Management Environment), byla roz\u0161\u00ed\u0159ena. Bylo povoleno pou\u017eit\u00ed uvozovek pro dom\u00e9ny v  a poskytnuta podpora tls-alpn-01 pro. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/cs\/domain\/\"   title=\"dom\u00e9nov\u00fdch jmen\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"912\">dom\u00e9nov\u00fdch jmen<\/a>, kter\u00e9 nejsou v\u00e1z\u00e1ny na virtu\u00e1ln\u00ed hostitele.\n<li class=\"l\"> Byl p\u0159id\u00e1n parametr StrictHostCheck, kter\u00fd zakazuje uv\u00e1d\u011bn\u00ed nenastaven\u00fdch n\u00e1zv\u016f hostitel\u016f v seznamu argument\u016f \u201eallow\u201c.    <\/ul>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=55809\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\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 2.4.49, \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u043e 27 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439 \u0438 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u043e 5 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439: CVE-2021-33193 &#8212; \u043f\u043e\u0434\u0432\u0435\u0440\u0436\u0435\u043d\u043d\u043e\u0441\u0442\u044c mod_http2 \u043d\u043e\u0432\u043e\u043c\u0443 \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u0443 \u0430\u0442\u0430\u043a\u0438 &#171;HTTP Request Smuggling&#187;, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u043c\u0443 \u0447\u0435\u0440\u0435\u0437 \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0443 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u044b\u0445 \u043a\u043b\u0438\u0435\u043d\u0442\u0441\u043a\u0438\u0445 \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432 \u0432\u043a\u043b\u0438\u043d\u0438\u0432\u0430\u0442\u044c\u0441\u044f \u0432 \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0435 \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432 \u0434\u0440\u0443\u0433\u0438\u0445 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439, \u043f\u0435\u0440\u0435\u0434\u0430\u0432\u0430\u0435\u043c\u044b\u0445 \u0447\u0435\u0440\u0435\u0437 mod_proxy (\u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u043c\u043e\u0436\u043d\u043e \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u043f\u043e\u0434\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0438 \u0432\u0440\u0435\u0434\u043e\u043d\u043e\u0441\u043d\u043e\u0433\u043e JavaScript-\u043a\u043e\u0434\u0430 \u0432 \u0441\u0435\u0430\u043d\u0441 \u0434\u0440\u0443\u0433\u043e\u0433\u043e \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f \u0441\u0430\u0439\u0442\u0430). CVE-2021-40438 &#8212; SSRF-\u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (Server [&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-101281","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=\"\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 2.4.49, \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u043e 27 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439 \u0438 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u043e 5 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439: CVE-2021-33193 - 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zranitelnost mod_http2 v\u016f\u010di nov\u00e9mu typu \u00fatoku \"HTTP Request.","canonical_url":"https:\/\/prohoster.info\/cs\/blog\/news\/reliz-http-servera-apache-2-4-49-s-ustraneniem-uyazvimostej","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"cs_CZ","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\u0420\u0435\u043b\u0438\u0437 http-\u0441\u0435\u0440\u0432\u0435\u0440\u0430 Apache 2.4.49 \u0441 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0435\u043c \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 | ProHoster","og:description":"\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 2.4.49, \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u043e 27 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439 \u0438 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u043e 5 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439: CVE-2021-33193 - 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