{"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\/sk\/blog\/news\/reliz-http-servera-apache-2-4-49-s-ustraneniem-uyazvimostej","title":{"rendered":"Uvo\u013enenie http-servera Apache 2.4.49 s odstr\u00e1nen\u00edm zranite\u013enost\u00ed.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Bol uverejnen\u00fd vydanie HTTP servera Apache 2.4.49, ktor\u00e9 prin\u00e1\u0161a 27 zmien a opravuje 5 zranite\u013enost\u00ed:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2021-33193 \u2014 zranite\u013enos\u0165 mod_http2 vo\u010di nov\u00e9mu variantu \u00fatoku \u201eHTTP Request Smuggling\u201c, ktor\u00fd umo\u017e\u0148uje vklinenie do obsahu po\u017eiadaviek in\u00fdch pou\u017e\u00edvate\u013eov, pren\u00e1\u0161an\u00fdch cez mod_proxy, prostredn\u00edctvom odosielania \u0161peci\u00e1lne form\u00e1tovan\u00fdch klientsk\u00fdch po\u017eiadaviek (napr\u00edklad m\u00f4\u017ee d\u00f4js\u0165 k vlo\u017eeniu \u0161kodliv\u00e9ho JavaScript k\u00f3du do rel\u00e1cie in\u00e9ho u\u017e\u00edvate\u013ea webu).\n<li class=\"l\"> CVE-2021-40438 \u2014 zranite\u013enos\u0165 SSRF (Server Side Request Forgery) v mod_proxy, ktor\u00e1 umo\u017e\u0148uje cez odosielanie \u0161peci\u00e1lne form\u00e1tovanej po\u017eiadavky uri-path presmerova\u0165 po\u017eiadavku na server vybran\u00fd \u00fato\u010dn\u00edkom.\n<li class=\"l\"> CVE-2021-39275 \u2014 prete\u010denie vyrovn\u00e1vacej pam\u00e4ti v funkcii ap_escape_quotes. Zranite\u013enos\u0165 je ozna\u010den\u00e1 ako nebezpe\u010dn\u00e1, preto\u017ee v\u0161etky \u0161tandardn\u00e9 moduly neodovzd\u00e1vaj\u00fa extern\u00e9 d\u00e1ta do tejto funkcie. Teoreticky v\u0161ak m\u00f4\u017eu existova\u0165 extern\u00e9 moduly, cez ktor\u00e9 je mo\u017en\u00e9 vykona\u0165 \u00fatok.\n<li class=\"l\"> CVE-2021-36160 \u2014 \u010d\u00edtanie z oblasti mimo hran\u00edc vyrovn\u00e1vacej pam\u00e4ti v module mod_proxy_uwsgi, \u010do vedie k p\u00e1du.\n<li class=\"l\"> CVE-2021-34798 \u2014 dereferencovanie nulov\u00e9ho ukazovate\u013ea, \u010do vedie k p\u00e1du procesu pri spracovan\u00ed \u0161peci\u00e1lne form\u00e1tovan\u00fdch po\u017eiadaviek.        <\/li>\n<\/ul>\n<p>Najv\u00fdraznej\u0161ie zmeny, ktor\u00e9 sa net\u00fdkaj\u00fa bezpe\u010dnosti:   <\/p>\n<ul>\n<li class=\"l\"> Bolo vykonan\u00fdch mno\u017estvo intern\u00fdch zmien v mod_ssl. Z mod_ssl boli do hlavn\u00e9ho jadra prenesen\u00e9 nastavenia \u201essl_engine_set\u201c, \u201essl_engine_disable\u201c a \u201essl_proxy_enable\u201c. Bolo poskytnut\u00e9 mo\u017enos\u0165 aplikova\u0165 alternat\u00edvne <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/sk\/ssl-sertifikat\/\"   title=\"SSL\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2294\">SSL<\/a>-moduly pre ochranu pripojen\u00ed cez mod_proxy. Bola pridan\u00e1 mo\u017enos\u0165 vedenia logu uzavret\u00fdch k\u013e\u00fa\u010dov, ktor\u00fd m\u00f4\u017ee by\u0165 pou\u017eit\u00fd v wireshark na anal\u00fdzu za\u0161ifrovan\u00e9ho prenosu.\n<li class=\"l\"> V mod_proxy bol ur\u00fdchlen\u00fd parsing ciest s unix socketmi pren\u00e1\u0161an\u00fdmi v URL \u201eproxy:\u201c.\n<li class=\"l\"> Boli roz\u0161\u00edren\u00e9 mo\u017enosti modulu mod_md, ktor\u00fd sa pou\u017e\u00edva na automatiz\u00e1ciu z\u00edskavania a \u00fadr\u017eby certifik\u00e1tov pomocou protokolu ACME (Automatic Certificate Management Environment). Umo\u017enen\u00e9 podmienkovanie dom\u00e9n v  a bola poskytnut\u00e1 podpora tls-alpn-01 pre <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/sk\/domain\/\"   title=\"dom\u00e9nov\u00fdch mien\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"912\">dom\u00e9nov\u00fdch mien<\/a>, nie viazan\u00e9 na virtu\u00e1lne hostite\u013eov.\n<li class=\"l\"> Bol pridan\u00fd parameter StrictHostCheck, ktor\u00fd zakazuje uv\u00e1dzanie nenastaven\u00fdch n\u00e1zvov hostite\u013eov v zozname argumentov \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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zranite\u013enos\u0165 mod_http2 na nov\u00fd variant \u00fatoku \"HTTP Request.\"","canonical_url":"https:\/\/prohoster.info\/sk\/blog\/news\/reliz-http-servera-apache-2-4-49-s-ustraneniem-uyazvimostej","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\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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