{"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\/en\/blog\/news\/reliz-http-servera-apache-2-4-41-s-ustraneniem-uyazvimostej","title":{"rendered":"Release of Apache 2.4.41 with vulnerability fixes","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> Release of the Apache HTTP server 2.4.41 (the 2.4.40 release was skipped), which features <noindex><a rel=\"nofollow\" href=\"http:\/\/www.apache.org\/dist\/httpd\/CHANGES_2.4.41\">23 changes<\/a><\/noindex> and fixes <noindex><a rel=\"nofollow\" href=\"http:\/\/httpd.apache.org\/security\/vulnerabilities_24.html\">6 vulnerabilities<\/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 the issue lies in mod_http2, which can lead to memory corruption when sending push requests very early on. When using the \"H2PushResource\" setting, it is possible to overwrite memory space in the request processing pool, but the issue is limited to crashes since the data written is not based on information received from the client;\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 susceptibility recently <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51279\">announced<\/a><\/noindex> DoS vulnerability in HTTP\/2 implementations.<br \/>\nAn attacker can exhaust available process memory and create a high CPU load by opening an HTTP\/2 sliding window to send data from the server without limits, while keeping the TCP window closed, which prevents actual data from being written to the socket; <\/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 the issue lies in mod_rewrite, allowing the server to forward requests to other resources (open redirect). Some mod_rewrite settings can lead to redirecting a user to another link encoded with a newline character within the parameter used in the existing redirect. To block the issue in RegexDefaultOptions, the PCRE_DOTALL flag can be used, which is now set by default;\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 the possibility of cross-site scripting on error pages generated by mod_proxy. On these pages, the URL received from the request is inserted into the link, where the attacker can insert arbitrary HTML code through character escaping;\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 and NULL pointer dereference in mod_remoteip, exploited through manipulation of the PROXY protocol header. The attack can only be performed from the proxy server settings used, not through the client request;\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 a vulnerability in mod_http2 allowing for reading content from already freed memory (read-after-free) at the moment of connection termination.\n<\/ul>\n<p>The most notable changes not related to security: <\/p>\n<ul>\n<li class=\"l\"> In mod_proxy_balancer, enhanced protection against XSS\/XSRF attacks from trusted nodes;\n<li class=\"l\"> In mod_session, added the SessionExpiryUpdateInterval setting to define the cookie\/session expiration update interval;\n<li class=\"l\"> Conducted cleanup of error pages to prevent displaying request information on those pages;\n<li class=\"l\"> In mod_http2, the value of the parameter \"LimitRequestFieldSize\" is now accounted for, which previously only applied to HTTP\/1.1 header field checks;\n<li class=\"l\"> Configuration creation of mod_proxy_hcheck has been ensured when used in BalancerMember;\n<li class=\"l\"> Memory consumption in mod_dav has been reduced when using the PROPFIND command on a large collection;\n<li class=\"l\"> Issues regarding the specification of certificate and SSL settings within the Proxy block have been resolved in mod_proxy and mod_ssl;\n<li class=\"l\"> SSLProxyCheckPeer* settings are now allowed to be applied for all proxy modules in mod_proxy;\n<li class=\"l\"> The capabilities of the module <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\">developed by<\/a><\/noindex> the Let\u2019s Encrypt project for automating the obtaining and maintenance of certificates using the ACME (Automatic Certificate Management Environment) protocol:\n<ul>\n<li class=\"l\"> The second version of the protocol has been added, <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=48255\">ACMEv2<\/a><\/noindex>, which is now applied by default and <noindex><a rel=\"nofollow\" href=\"https:\/\/community.letsencrypt.org\/t\/acme-v2-scheduled-deprecation-of-unauthenticated-resource-gets\/74380\">use<\/a><\/noindex> uses empty POST requests instead of GET.\n<li class=\"l\"> Support for checking based on the TLS-ALPN-01 extension (RFC 7301, Application-Layer Protocol Negotiation), which is used in HTTP\/2, has been added.\n<li class=\"l\"> Support for the 'tls-sni-01' verification method has been discontinued (due to <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=47883\">a vulnerability<\/a><\/noindex>).\n<li class=\"l\"> Commands have been added to set up and break verification using the 'dns-01' method.\n<li class=\"l\"> Support added <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=46817\">masks<\/a><\/noindex> in certificates when enabling DNS-based verification ('dns-01').\n<li class=\"l\"> A 'md-status' handler and a certificate status page have been implemented at 'https:\/\/domain\/.httpd\/certificate-status'.\n<li class=\"l\">  Directives 'MDCertificateFile' and 'MDCertificateKeyFile' have been added for configuring domain parameters through static files (without auto-renewal support).\n<li class=\"l\"> The directive 'MDMessageCmd' has been added to call external commands when the events 'renewed', 'expiring', or 'errored' occur.\n<li class=\"l\"> The directive 'MDWarnWindow' has been added to configure a warning message about the expiration of the certificate.\n<\/ul>\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Source: <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 5.0.1.1 - 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 \u043f\u0440\u043e\u043f\u0443\u0449\u0435\u043d), \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c 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