{"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\/et\/blog\/novosti-interneta\/reliz-http-servera-apache-2-4-52-s-ustraneniem-perepolneniya-bufera-v-mod_lua","title":{"rendered":"Apache 2.4.52 http-serveri v\u00e4ljaanne, mis k\u00f5rvaldab mod_lua puhverdamise \u00fclevoolu","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Avaldasime Apache HTTP serveri versiooni 2.4.52, mis sisaldab 25 muudatust ja lahendab 2 haavatavust:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2021-44790 \u2014 bufrik\u00e4ning i mod_lua, som upptr\u00e4der vid tolkning av multipart-f\u00f6rfr\u00e5gningar. S\u00e5rbarheten p\u00e5verkar konfigurationer d\u00e4r Lua-skript anropar funktionen r:parsebody() f\u00f6r att tolka beg\u00e4rans kropp och till\u00e5ter en angripare att \u00e5stadkomma en buffert\u00f6verskridning genom att skicka en speciellt utformad beg\u00e4ran. Det har \u00e4nnu inte f\u00f6rekommit n\u00e5gra rapporter om exploatering, men problemet kan potentiellt leda till att kod k\u00f6rs p\u00e5 <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/et\/server\/dts-newyork\/\"   title=\"serveril\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2693\">serveril<\/a>.\n<li class=\"l\"> CVE-2021-44224 \u2014 SSRF-s\u00e5rbarhet (Server Side Request Forgery) i mod_proxy, som till\u00e5ter omdirigering av en beg\u00e4ran till en annan hanterare p\u00e5 samma server, i konfigurationer d\u00e4r inst\u00e4llningen 'ProxyRequests on' \u00e4r aktiverad, via en speciellt utformad URI-beg\u00e4ran som accepterar anslutningar via Unix Domain Socket. Problemet kan ocks\u00e5 anv\u00e4ndas f\u00f6r att orsaka krascher genom att skapa f\u00f6rh\u00e5llanden f\u00f6r dereferering av en nullpekare. Denna fr\u00e5ga ber\u00f6r Apache httpd-versioner fr\u00e5n och med 2.4.7.    <\/ul>\n<p>K\u00f5ige m\u00e4rgatavamad muudatused, mis ei ole seotud turvalisuse t\u00f5stmisega:   <\/p>\n<ul>\n<li class=\"l\"> mod_ssl-sse on lisatud tugi OpenSSL 3 teegiga koostamiseks.\n<li class=\"l\"> Parandatud on OpenSSL-i teegi m\u00e4\u00e4ramine autoconf skriptides.\n<li class=\"l\"> I mod_proxy f\u00f6r tunneleringsprotokoll finns m\u00f6jlighet att inaktivera omdirigering av halv\u00f6ppna TCP-anslutningar genom att st\u00e4lla in parametern 'SetEnv proxy-nohalfclose'.\n<li class=\"l\"> Lisatud t\u00e4iendavad kontrollid, et URI-d, mis ei ole m\u00f5eldud edastamiseks, sisaldavad http\/https skeemi, ning need, mis on m\u00f5eldud edastamiseks, sisaldavad hostinime.\n<li class=\"l\"> Mod_proxy_connect ja mod_proxy-s ei ole lubatud muuta olekukoodi p\u00e4rast selle edastamist kliendile.\n<li class=\"l\"> Keskendatud vastuste saatmisel p\u00e4rast p\u00e4ringute saamist pealkirjaga &#171;Expect: 100-Continue&#187; on tagatud, et vastuses on olek &#171;100 Continue&#187; ja mitte p\u00e4ringu praegune olek.\n<li class=\"l\"> Mod_dav toetab CalDAV laiendusi, kus omaduste genereerimisel peavad arvesse v\u00f5tma nii dokumendi elemente kui ka omaduse elemente. Lisatud on uued funktsioonid dav_validate_root_ns(), dav_find_child_ns(), dav_find_next_ns(), dav_find_attr_ns() ja dav_find_attr(), mida saab kutsuda teistest moodulitest.\n<li class=\"l\"> Mpm_event lahendas probleemi, kus oote-protsesside peatamine toimus serveri koormuse suurenemise j\u00e4rel.\n<li class=\"l\"> Mod_http2-s on lahendatud regressiivsed muudatused, mis p\u00f5hjustavad ebat\u00e4pset k\u00e4itumist MaxRequestsPerChild ja MaxConnectionsPerChild piirangute t\u00f6\u00f6tlemisel.\n<li class=\"l\"> Mod_md, mis automatiseerib ACME (Automatic Certificate Management Environment) protokolliga seotud sertifikaatide saamise ja haldamise, funktsionaalsust on laiendatud:\n<ul>\n<li class=\"l\"> Lisatud on toetus ACME External Account Binding (EAB) mehhanismile, mis aktiveeritakse MDExternalAccountBinding direktiivi abil. EAB v\u00e4\u00e4rtusi saab seadistada v\u00e4listesse JSON-formaadis failidesse, mis v\u00f5imaldab mitte paljastada autentimise parameetreid peafailis. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/et\/server\/\"   title=\"serveri seadistused\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"997\">serveri seadistused<\/a>.\n<li class=\"l\"> Direktiivis &#8216;MDCertificateAuthority&#8217; on tagatud kontroll, et URL-parameeter on http\/https v\u00f5i \u00fcks ettem\u00e4\u00e4ratud nimedest (&#8216;LetsEncrypt&#8217;, &#8216;LetsEncrypt-Test&#8217;, &#8216;Buypass&#8217; ja &#8216;Buypass-Test&#8217;).\n<li class=\"l\">  MDContactEmail direktiivi m\u00e4\u00e4ramine on lubatud  sektsioonis.\n<li class=\"l\"> Parandatud on mitmed vead, sealhulgas m\u00e4lulekke k\u00f5rvaldamine, mis tekkis siis, kui privaatv\u00f5tme laadimisel esines t\u00f5rkeid.  <\/ul>\n<\/ul>\n<p>Allikas: <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-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - 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