{"id":37194,"date":"2019-10-31T22:16:17","date_gmt":"2019-10-31T19:16:17","guid":{"rendered":"https:\/\/prohoster.info\/blog\/reliz-http-servera-apache-2-4-41-s-ustraneniem-uyazvimostej\/"},"modified":"2019-10-31T22:16:17","modified_gmt":"2019-10-31T19:16:17","slug":"reliz-http-servera-apache-2-4-41-s-ustraneniem-uyazvimostej","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hr\/blog\/news\/reliz-http-servera-apache-2-4-41-s-ustraneniem-uyazvimostej","title":{"rendered":"Izdanja HTTP poslu\u017eitelja Apache 2.4.41 s ispravkom ranjivosti","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex><a rel=\"nofollow\" href=\"https:\/\/www.mail-archive.com\/announce@httpd.apache.org\/msg00139.html\">Objavljeno<\/a><\/noindex> izdanje HTTP poslu\u017eitelja Apache 2.4.41 (izdanje 2.4.40 je propu\u0161teno), koje predstavlja <noindex><a rel=\"nofollow\" href=\"http:\/\/www.apache.org\/dist\/httpd\/CHANGES_2.4.41\">23 izmjene<\/a><\/noindex> i ispravljenih <noindex><a rel=\"nofollow\" href=\"http:\/\/httpd.apache.org\/security\/vulnerabilities_24.html\">6 ranjivosti<\/a><\/noindex>:<\/p>\n<ul>\n<li class=\"l\">  <noindex><a rel=\"nofollow\" href=\"https:\/\/www.mail-archive.com\/announce@httpd.apache.org\/msg00140.html\">CVE-2019-10081<\/a><\/noindex> \u2014 problem u mod_http2 koji mo\u017ee dovesti do o\u0161te\u0107enja memorije prilikom slanja push zahtjeva u vrlo ranoj fazi. Kada se koristi postavka \u201eH2PushResource\u201d, mo\u017ee do\u0107i do prepisivanja memorije u okviru za obradu zahtjeva, ali je problem ograni\u010den na kvar, jer podaci koji se upisuju ne ovise o informacijama dobivenim od klijenta;\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/www.mail-archive.com\/announce@httpd.apache.org\/msg00145.html\">CVE-2019-9517<\/a><\/noindex> \u2014 izlo\u017eenost nedavnoj <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51279\">najavljenog<\/a><\/noindex> DoS ranjivosti u implementacijama HTTP\/2.<br \/>\nNapada\u010d mo\u017ee iscrpiti dostupnu memoriju procesa i stvoriti veliku optere\u0107enost CPU-a, otvaraju\u0107i klizni prozor HTTP\/2 za slanje podataka s poslu\u017eitelja bez ograni\u010denja, ali dr\u017ee\u0107i TCP prozor zatvorenim, \u0161to onemogu\u0107ava stvarno zapisivanje podataka u uti\u010dnicu; <\/p>\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/www.mail-archive.com\/announce@httpd.apache.org\/msg00144.html\">CVE-2019-10098<\/a><\/noindex> \u2014 problem u mod_rewrite koji omogu\u0107ava kori\u0161tenje poslu\u017eitelja za preusmjeravanje zahtjeva na druge resurse (open redirect). Neke postavke mod_rewrite mogu dovesti do preusmjeravanja korisnika na drugu vezu, kodiranu kori\u0161tenjem znaka novog reda unutar parametra koji se koristi u postoje\u0107em redirektu. Kako bi se blokirao problem, u RegexDefaultOptions mo\u017ee se koristiti oznaka PCRE_DOTALL koja je sada zadana;\n<li class=\"l\">  <noindex><a rel=\"nofollow\" href=\"https:\/\/www.mail-archive.com\/announce@httpd.apache.org\/msg00142.html\">CVE-2019-10092<\/a><\/noindex> \u2014 mogu\u0107nost provo\u0111enja me\u0111usite\u010dkog skriptiranja na stranicama gre\u0161aka koje generira mod_proxy. Na tim stranicama u vezi se ubacuje URL dobiven iz zahtjeva, u kojem napada\u010d mo\u017ee putem isklju\u010divanja znakova umetnuti proizvoljni HTML kod;\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/www.mail-archive.com\/announce@httpd.apache.org\/msg00143.html\">CVE-2019-10097<\/a><\/noindex> \u2014 prelivanje me\u0111uspremnika i dereferenciranje NULL pokaziva\u010da u mod_remoteip, iskori\u0161teno putem manipulacije s PROXY protokolom. Napad se mo\u017ee izvr\u0161iti samo s strane kori\u0161tenog poslu\u017eitelja proxy postavki, a ne putem zahtjeva klijenta;\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/www.mail-archive.com\/announce@httpd.apache.org\/msg00141.html\">CVE-2019-10082<\/a><\/noindex> \u2014 ranjivost u mod_http2 koja omogu\u0107ava prilikom zatvaranja veze inicirati \u010ditanje sadr\u017eaja iz ve\u0107 oslobo\u0111ene memorijske zone (read-after-free).\n<\/ul>\n<p>Najistaknutije promjene, koje nisu vezane uz sigurnost: <\/p>\n<ul>\n<li class=\"l\"> U mod_proxy_balancer poja\u010dana je za\u0161tita od XSS\/XSRF napada iz pouzdanih \u010dvorova;\n<li class=\"l\"> U mod_session dodana je postavka SessionExpiryUpdateInterval za odre\u0111ivanje intervala a\u017euriranja vremena isteka sesije\/kola\u010di\u0107a;\n<li class=\"l\"> Provodi se \u010di\u0161\u0107enje stranica s gre\u0161kama usmjereno na isklju\u010divanje ispisivanja na tim stranicama informacija iz zahtjeva;\n<li class=\"l\"> U mod_http2 uzima se u obzir vrijednost parametra \u201eLimitRequestFieldSize\u201d, koji je ranije djelovao samo za provjeru polja zaglavlja HTTP\/1.1;\n<li class=\"l\"> Omogu\u0107ena je konfiguracija mod_proxy_hcheck prilikom kori\u0161\u0107enja u BalancerMember;\n<li class=\"l\"> Smanjena je potro\u0161nja memorije u mod_dav prilikom kori\u0161\u0107enja PROPFIND komande na velikoj kolekciji;\n<li class=\"l\"> U mod_proxy i mod_ssl re\u0161en je problem sa pode\u0161avanjima sertifikata i SSL unutar Proxy bloka;\n<li class=\"l\"> U mod_proxy omogu\u0107eno je kori\u0161\u0107enje SSLProxyCheckPeer* pode\u0161avanja za sve proxy module;\n<li class=\"l\"> Pro\u0161iren je kapacitet modula <noindex><a rel=\"nofollow\" href=\"https:\/\/httpd.apache.org\/docs\/2.4\/mod\/mod_md.html\">mod_md<\/a><\/noindex>, <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=47403\">razvijen<\/a><\/noindex> projektom Let's Encrypt za automatizaciju dobivanja i upravljanja certifikatima koriste\u0107i ACME (Automatic Certificate Management Environment) protokol:\n<ul>\n<li class=\"l\"> Dodana je druga verzija protokola <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=48255\">ACMEv2<\/a><\/noindex>, koja se sada primenjuje prema zadatku i <noindex><a rel=\"nofollow\" href=\"https:\/\/community.letsencrypt.org\/t\/acme-v2-scheduled-deprecation-of-unauthenticated-resource-gets\/74380\">koristi<\/a><\/noindex> prazni POST zahtevi umesto GET.\n<li class=\"l\"> Dodata je podr\u0161ka za proveru na osnovu TLS-ALPN-01 ekstenzije (RFC 7301, Pregovaranje protokola na nivou aplikacije), koja se koristi u HTTP\/2.\n<li class=\"l\"> Prekinuta podr\u0161ka za metodu provjere \u2018tls-sni-01\u2019 (zbog <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=47883\">ranjivosti<\/a><\/noindex>).\n<li class=\"l\"> Dodane su naredbe za konfiguraciju i prekid provjere metodom \u2018dns-01\u2019.\n<li class=\"l\"> Dodana podr\u0161ka <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=46817\">maski<\/a><\/noindex> u certifikatima prilikom aktivacije provjere temeljenom na DNS-u (\u2018dns-01\u2019).\n<li class=\"l\"> Implementiran je obra\u0111iva\u010d \u2018md-status\u2019 i stranica sa statusom certifikata \u2018https:\/\/domain\/.httpd\/certificate-status\u2019.\n<li class=\"l\">  Dodane su direktive \u2018MDCertificateFile\u2019 i \u2018MDCertificateKeyFile\u2019 za konfiguraciju postavki domena putem stati\u010dnih datoteka (bez podr\u0161ke za automatsko a\u017euriranje).\n<li class=\"l\"> Dodana je direktiva \u00abMDMessageCmd\u00bb za pozivanje vanjskih naredbi prilikom doga\u0111aja \u2018renewed\u2019, \u2018expiring\u2019 ili \u2018errored\u2019.\n<li class=\"l\"> Dodana je direktiva \u00abMDWarnWindow\u00bb za postavljanje upozoravaju\u0107e poruke o isteku roka va\u017eenja certifikata;\n<\/ul>\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Izvor: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51298\">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 2.4.41 (\u0432\u044b\u043f\u0443\u0441\u043a 2.4.40 \u0431\u044b\u043b \u043f\u0440\u043e\u043f\u0443\u0449\u0435\u043d), \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u043e 23 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0438 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u043e 6 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439: CVE-2019-10081 &#8212; \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0432 mod_http2, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a \u043f\u043e\u0432\u0440\u0435\u0436\u0434\u0435\u043d\u0438\u044e \u043f\u0430\u043c\u044f\u0442\u0438 \u043f\u0440\u0438 \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0435 push-\u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432 \u043d\u0430 \u043e\u0447\u0435\u043d\u044c \u0440\u0430\u043d\u043d\u0435\u0439 \u0441\u0442\u0430\u0434\u0438\u0438. \u041f\u0440\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0438 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0438 &#171;H2PushResource&#187; \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u0430 \u043f\u0435\u0440\u0435\u0437\u0430\u043f\u0438\u0441\u044c \u043e\u0431\u043b\u0430\u0441\u0442\u0438 \u043f\u0430\u043c\u044f\u0442\u0438 \u0432 \u043f\u0443\u043b\u0435 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432, \u043d\u043e \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0430 \u043a\u0440\u0430\u0445\u043e\u043c, \u0442\u0430\u043a \u043a\u0430\u043a \u0437\u0430\u043f\u0438\u0441\u044b\u0432\u0430\u0435\u043c\u044b\u0435 [&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-37194","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - 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 2.4.41 (\u0432\u044b\u043f\u0443\u0441\u043a 2.4.40 \u0431\u044b\u043b 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