{"id":102701,"date":"2021-12-22T09:36:38","date_gmt":"2021-12-22T07:36:38","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/reliz-http-servera-apache-2-4-52-s-ustraneniem-perepolneniya-bufera-v-mod_lua"},"modified":"2021-12-22T09:36:38","modified_gmt":"2021-12-22T07:36:38","slug":"reliz-http-servera-apache-2-4-52-s-ustraneniem-perepolneniya-bufera-v-mod_lua","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/reliz-http-servera-apache-2-4-52-s-ustraneniem-perepolneniya-bufera-v-mod_lua","title":{"rendered":"Udgivelsen af http-serveren Apache 2.4.52 med rettelse af bufferoverl\u00f8b i mod_lua","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Apache HTTP-server version 2.4.52 er udgivet med 25 \u00e6ndringer og rettet 2 s\u00e5rbarheder:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2021-44790 \u2014 bufferoverflow in mod_lua, which occurs when parsing requests consisting of multiple parts (multipart). The vulnerability affects configurations where Lua scripts invoke the r:parsebody() function to parse the request body, allowing an attacker to achieve buffer overflow by sending a specially crafted request. No exploit cases have been identified yet, but the issue could potentially lead to arbitrary code execution on <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/da\/server\/dts-newyork\/\"   title=\"serveren\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2693\">serveren<\/a>.\n<li class=\"l\"> CVE-2021-44224 \u2014 SSRF vulnerability (Server Side Request Forgery) in mod_proxy, allowing configurations with the 'ProxyRequests on' setting to redirect a request to another handler on the same server that accepts connections via Unix Domain Socket through a specially crafted URI request. The issue can also be exploited to cause a crash by creating conditions for null pointer dereference. The problem affects Apache httpd versions starting from 2.4.7.    <\/ul>\n<p>De mest markante \u00e6ndringer, der ikke vedr\u00f8rer sikkerhed:   <\/p>\n<ul>\n<li class=\"l\"> St\u00f8tte til opbygning med OpenSSL 3-biblioteket er blevet tilf\u00f8jet i mod_ssl.\n<li class=\"l\"> Bedre bestemmelse af OpenSSL-biblioteket i autoconf scripts.\n<li class=\"l\"> In mod_proxy for tunneling protocols, the option to disable half-open TCP connection redirection is provided by setting the 'SetEnv proxy-nohalfclose' parameter.\n<li class=\"l\"> Yderligere kontroller er blevet tilf\u00f8jet for at sikre, at URI'er, der ikke er beregnet til proxyering, indeholder http\/https skema, mens de, der er beregnet til proxyering, indeholder et v\u00e6rtsnavn.\n<li class=\"l\"> I mod_proxy_connect og mod_proxy er det forbudt at \u00e6ndre statuskoden efter den er sendt til klienten.\n<li class=\"l\"> When sending intermediate responses after receiving requests with the 'Expect: 100-Continue' header, the result now indicates the state '100 Continue' instead of the current state of the request.\n<li class=\"l\"> I mod_dav er der tilf\u00f8jet st\u00f8tte til CalDAV-udvidelser, hvor generering af egenskaber skal tage hensyn til b\u00e5de dokumentelementer og egenskabselementer. Nye funktioner dav_validate_root_ns(), dav_find_child_ns(), dav_find_next_ns(), dav_find_attr_ns() og dav_find_attr() er tilf\u00f8jet, som kan kaldes fra andre moduler.\n<li class=\"l\"> I mpm_event er der l\u00f8st et problem med at stoppe inaktive b\u00f8rneprocesser efter en stigning i serverbelastningen.\n<li class=\"l\"> I mod_http2 er regressionsfejl, der f\u00f8rer til ukorrekt adf\u00e6rd ved behandling af MaxRequestsPerChild og MaxConnectionsPerChild begr\u00e6nsninger, blevet rettet.\n<li class=\"l\"> Funktionaliteten i mod_md-modulet, der anvendes til automatisering af opn\u00e5else og vedligeholdelse af certifikater ved hj\u00e6lp af ACME-protokollen (Automatic Certificate Management Environment), er blevet udvidet:\n<ul>\n<li class=\"l\"> Underst\u00f8ttelse af ACME External Account Binding (EAB) er blevet tilf\u00f8jet, som aktiveres via direktivet MDExternalAccountBinding. V\u00e6rdier for EAB kan konfigureres fra en ekstern fil i JSON-format, hvilket g\u00f8r det muligt ikke at afsl\u00f8re autentifikationsoplysninger i hovedfilen. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/da\/server\/\"   title=\"serverkonfiguration\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"997\">serverkonfiguration<\/a>.\n<li class=\"l\"> In the 'MDCertificateAuthority' directive, a check is implemented to specify the URL parameter as http\/https or one of the predefined names ('LetsEncrypt', 'LetsEncrypt-Test', 'Buypass', and 'Buypass-Test').\n<li class=\"l\">  Angivelse af direktivet MDContactEmail er tilladt inden for sektionen .\n<li class=\"l\"> Flere fejl er rettet, herunder en hukommelsesl\u00e6kage, som opst\u00e5r ved fejl under indl\u00e6sning af den private n\u00f8gle.  <\/ul>\n<\/ul>\n<p>Kilde: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=56387\">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 2.4.52, \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u043e 25 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439 \u0438 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b 2 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438: CVE-2021-44790 &#8212; \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u0431\u0443\u0444\u0435\u0440\u0430 \u0432 mod_lua, \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u044e\u0449\u0435\u0435\u0441\u044f \u043f\u0440\u0438 \u0440\u0430\u0437\u0431\u043e\u0440\u0435 \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432, \u0441\u043e\u0441\u0442\u043e\u044f\u0449\u0438\u0445 \u0438\u0437 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u0438\u0445 \u0447\u0430\u0441\u0442\u0435\u0439 (multipart). \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0437\u0430\u0442\u0440\u0430\u0433\u0438\u0432\u0430\u0435\u0442 \u043a\u043e\u043d\u0444\u0438\u0433\u0443\u0440\u0430\u0446\u0438\u0438, \u0432 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 Lua-\u0441\u043a\u0440\u0438\u043f\u0442\u044b \u0432\u044b\u0437\u044b\u0432\u0430\u044e\u0442 \u0444\u0443\u043d\u043a\u0446\u0438\u044e r:parsebody() \u0434\u043b\u044f \u0440\u0430\u0437\u0431\u043e\u0440\u0430 \u0442\u0435\u043b\u0430 \u0437\u0430\u043f\u0440\u043e\u0441\u0430, \u0438 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0442 \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0435\u043c\u0443 \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0431\u0443\u0444\u0435\u0440\u0430 \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\u043e\u0433\u043e \u0437\u0430\u043f\u0440\u043e\u0441\u0430. \u0424\u0430\u043a\u0442\u043e\u0432 \u043d\u0430\u043b\u0438\u0447\u0438\u044f [&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-102701","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - 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