{"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\/no\/blog\/news\/reliz-http-servera-apache-2-4-41-s-ustraneniem-uyazvimostej","title":{"rendered":"Utgivelsen av HTTP-serveren Apache 2.4.41 med sikkerhetsrettelser","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\">Published<\/a><\/noindex> utgivelsen av HTTP-serveren Apache 2.4.41 (utgave 2.4.40 ble hoppet over), som presenterer <noindex><a rel=\"nofollow\" href=\"http:\/\/www.apache.org\/dist\/httpd\/CHANGES_2.4.41\">23 endringer<\/a><\/noindex> og utbedret <noindex><a rel=\"nofollow\" href=\"http:\/\/httpd.apache.org\/security\/vulnerabilities_24.html\">6 s\u00e5rbarheter<\/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 problemet ligger i mod_http2, som kan f\u00f8re til hukommelsesskader ved at sende push-anmodninger i et tidligt stadium. Ved brug af indstillingen \u00abH2PushResource\u00bb kan hukommelsesomr\u00e5det overskrives i request-handlingspuljen, men problemet er begr\u00e6nset til nedbrud, da de skrevne data ikke er baseret p\u00e5 information modtaget fra klienten;\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 udsat for nye <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51279\">annonserte<\/a><\/noindex> DoS-s\u00e5rbarhet i implementeringene av HTTP\/2.<br \/>\nAngriperen kan t\u00f8mme tilgjengelig prosessminne og skape h\u00f8y belastning p\u00e5 CPU-en, ved \u00e5 \u00e5pne et glidende vindu for HTTP\/2 for \u00e5 sende data fra serveren uten begrensninger, samtidig som TCP-vinduet forblir lukket, noe som forhindrer faktisk skriving av data til sokkelen; <\/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 problemet ligger i mod_rewrite, der tillader serveren at lave redirects til andre ressourcer (open redirect). Nogle indstillinger i mod_rewrite kan medf\u00f8re, at brugeren omdirigeres til et andet link, der er kodet med brug af newline-tegnet inden for parameteren, der anvendes i den eksisterende redirect. For at blokere problemet i RegexDefaultOptions kan flaget PCRE_DOTALL bruges, som nu er standard;\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 muligheden for at udf\u00f8re cross-site scripting p\u00e5 fejl- sider genereret af mod_proxy. P\u00e5 disse sider inds\u00e6ttes det URL, der modtages fra anmodningen, hvori angriberen gennem tegnescaping kan inds\u00e6tte vilk\u00e5rlig HTML-kode;\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 stack overflow og dereferencering af NULL-pointer i mod_remoteip, udnyttet gennem manipulation med PROXY-protokoloverskrifter. Angrebet kan kun udf\u00f8res fra den proxy-server, der er angivet i indstillingerne, og ikke via klientanmodningen;\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 s\u00e5rbarhed i mod_http2, der tillader, at der under afslutningen af forbindelsen kan initieres l\u00e6sning af indhold fra allerede frigivet hukommelse (read-after-free).\n<\/ul>\n<p>De mest bemerkelsesverdige endringene som ikke er relatert til sikkerhet: <\/p>\n<ul>\n<li class=\"l\"> I mod_proxy_balancer er beskyttelsen mot XSS\/XSRF-angrep fra betrodde noder styrket;\n<li class=\"l\"> I mod_session er innstillingen SessionExpiryUpdateInterval lagt til for \u00e5 definere oppdateringsintervallet for gyldigheten til sesjoner\/cookie;\n<li class=\"l\"> Feilsidene er ryddet for \u00e5 unng\u00e5 \u00e5 vise informasjon fra foresp\u00f8rslene p\u00e5 disse sidene;\n<li class=\"l\"> I mod_http2 er der taget hensyn til v\u00e6rdien af parameteren \u00abLimitRequestFieldSize\u00bb, som tidligere kun blev brugt til at kontrollere HTTP\/1.1 headerfelter;\n<li class=\"l\"> Det er lagt til st\u00f8tte for \u00e5 opprette konfigureringen av mod_proxy_hcheck n\u00e5r den brukes i BalancerMember;\n<li class=\"l\"> Minnebruken i mod_dav er redusert n\u00e5r PROPFIND-kommandoen brukes p\u00e5 en stor samling;\n<li class=\"l\"> I mod_proxy og mod_ssl er problemene med sertifikatinnstillinger og SSL inne i Proxy-blokken l\u00f8st;\n<li class=\"l\"> I mod_proxy er det tillatt \u00e5 bruke SSLProxyCheckPeer*-innstillinger for alle proxy-moduler;\n<li class=\"l\"> Modulen <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\">som er utviklet<\/a><\/noindex> projektet Let's Encrypt til automatisering af opn\u00e5else og vedligeholdelse af certifikater ved hj\u00e6lp af ACME-protokollen (Automatic Certificate Management Environment):\n<ul>\n<li class=\"l\"> Den andre versjonen av protokollen <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=48255\">ACMEv2<\/a><\/noindex>, som n\u00e5 brukes som standard og <noindex><a rel=\"nofollow\" href=\"https:\/\/community.letsencrypt.org\/t\/acme-v2-scheduled-deprecation-of-unauthenticated-resource-gets\/74380\">bruker<\/a><\/noindex> tomme POST-foresp\u00f8rsel i stedet for GET.\n<li class=\"l\"> St\u00f8tte for validering basert p\u00e5 TLS-ALPN-01-utvidelsen (RFC 7301, Application-Layer Protocol Negotiation) har blitt lagt til, som brukes i HTTP\/2.\n<li class=\"l\"> St\u00f8tten til tjekmetoden 'tls-sni-01' er blevet stoppet (p\u00e5 grund af <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=47883\">av s\u00e5rbarheten<\/a><\/noindex>).\n<li class=\"l\"> Nye kommandoer til konfiguration og opkald af tjekmetoden 'dns-01' er blevet tilf\u00f8jet.\n<li class=\"l\"> St\u00f8tte lagt til <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=46817\">masker<\/a><\/noindex> i certificater ved aktivering af DNS-baseret kontrol ('dns-01').\n<li class=\"l\"> En 'md-status'-handler og en side med certifikatstatus 'https:\/\/domain\/.httpd\/certificate-status' er blevet implementeret.\n<li class=\"l\">  Direktiverne \u00abMDCertificateFile\u00bb og \u00abMDCertificateKeyFile\u00bb er blevet tilf\u00f8jet til at konfigurere dom\u00e6neparametre via statiske filer (uden st\u00f8tte til automatisk opdatering).\n<li class=\"l\"> Det er lagt til direktivet \u00abMDMessageCmd\u00bb for \u00e5 kalle eksterne kommandoer ved hendelser som \u2018renewed\u2019, \u2018expiring\u2019 eller \u2018errored\u2019.\n<li class=\"l\"> Det er lagt til direktivet \u00abMDWarnWindow\u00bb for \u00e5 tilpasse meldingen om advarsel ved utl\u00f8p av sertifikatets gyldighet.\n<\/ul>\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Kilde: <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 5.0.5 - 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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