{"id":111480,"date":"2023-11-13T15:10:13","date_gmt":"2023-11-13T13:10:13","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimosti-v-openvpn-i-softether-vpn"},"modified":"2023-11-13T15:10:13","modified_gmt":"2023-11-13T13:10:13","slug":"uyazvimosti-v-openvpn-i-softether-vpn","status":"publish","type":"post","link":"https:\/\/prohoster.info\/en\/blog\/news\/uyazvimosti-v-openvpn-i-softether-vpn","title":{"rendered":"Vulnerabilities in OpenVPN and SoftEther VPN","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>OpenVPN 2.6.7 has been released, a package for creating virtual private networks that allows for encrypted connections between two client machines or enables the operation of a centralized VPN server for multiple clients concurrently. This new version addresses two vulnerabilities:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2023-46850 \u2014 a use-after-free issue can lead to sending memory content of a process over a connection to another party, potentially allowing for remote code execution. This problem arises in configurations using TLS (run without the \u2014secret parameter).\n<li class=\"l\"> CVE-2023-46849 \u2014 a division by zero situation can lead to remote-triggered crashes of access servers in configurations utilizing the \u2014fragment option.    <\/ul>\n<p>From non-security-related changes in OpenVPN 2.6.7:  <\/p>\n<ul>\n<li class=\"l\"> A warning has been added when a different party sends DATA_V1 packets while a client using OpenVPN 2.6.x attempts to connect to incompatible servers based on versions 2.4.0-2.4.4 (to resolve the incompatibility, the \u2014disable-dco option can be used).\n<li class=\"l\"> The deprecated method tied to OpenSSL 1.x that uses the OpenSSL Engine to load keys has been removed. The reason cited is the author's unwillingness to relicense the code with new binding exceptions.\n<li class=\"l\"> A warning has been added when a p2p NCP client connects to <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/en\/server\/dts-shicago\/\"   title=\"server\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2912\">server<\/a> p2mp (a combination used to operate without cipher negotiation), as there are issues when using version 2.6.x on both sides of the connection.\n<li class=\"l\"> A warning has been added that the \u2014show-groups flag does not display all supported groups.\n<li class=\"l\"> In the \u2014dns parameter, processing of the 'exclude-domains' argument, introduced in version 2.6 but not yet supported by backends, has been removed.\n<li class=\"l\"> A warning is displayed if the INFO control message is too large to be forwarded to the client.\n<li class=\"l\"> Support for the CMake build system has been added for builds using MinGW and MSVC. Support for the old MSVC build system has been removed.  <\/ul>\n<p>Additionally, it is notable that 9 vulnerabilities have been identified in the open <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/en\/vpn\/\"   title=\"VPN\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"213\">VPN<\/a>-server SoftEther. One of the issues (CVE-2023-27395) has been assigned a critical severity level \u2014 the vulnerability is caused by a buffer overflow and can lead to remote code execution on the client side when attempting to connect to a server controlled by an attacker. The vulnerability was fixed in the June update of SoftEther VPN 4.42 Build 9798 RTM. Two more vulnerabilities (CVE-2023-32634, CVE-2023-27516) allow unauthorized access to the VPN session during a MITM attack through the use of default credentials for the RPC server. These vulnerabilities have been addressed in a patch.    <\/p>\n<p>The vulnerabilities CVE-2023-31192 and CVE-2023-32275 (patch) may lead to the leakage of sensitive information in certain packets as a result of MITM attacks. The remaining 4 vulnerabilities (CVE-2023-22325, CVE-2023-23581, CVE-2023-22308, and CVE-2023-25774) can be exploited to cause denial of service, such as forcibly dropping the connection or crashing the client. Recently, the codebase of SoftEther VPN also received a fix for 7 vulnerabilities, details of which are not yet available.<br \/>\n<br \/>Source: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=60103\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043b\u0435\u043d \u0432\u044b\u043f\u0443\u0441\u043a OpenVPN 2.6.7, \u043f\u0430\u043a\u0435\u0442\u0430 \u0434\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u044b\u0445 \u0447\u0430\u0441\u0442\u043d\u044b\u0445 \u0441\u0435\u0442\u0435\u0439, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0433\u043e \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u043e\u0432\u0430\u0442\u044c \u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 \u043c\u0435\u0436\u0434\u0443 \u0434\u0432\u0443\u043c\u044f \u043a\u043b\u0438\u0435\u043d\u0442\u0441\u043a\u0438\u043c\u0438 \u043c\u0430\u0448\u0438\u043d\u0430\u043c\u0438 \u0438\u043b\u0438 \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0442\u044c \u0440\u0430\u0431\u043e\u0442\u0443 \u0446\u0435\u043d\u0442\u0440\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e VPN-\u0441\u0435\u0440\u0432\u0435\u0440\u0430 \u0434\u043b\u044f \u043e\u0434\u043d\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439 \u0440\u0430\u0431\u043e\u0442\u044b \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u0438\u0445 \u043a\u043b\u0438\u0435\u043d\u0442\u043e\u0432. \u0412 \u043d\u043e\u0432\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b \u0434\u0432\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438: CVE-2023-46850 &#8212; \u043e\u0431\u0440\u0430\u0449\u0435\u043d\u0438\u0435 \u043a \u043e\u0431\u043b\u0430\u0441\u0442\u0438 \u043f\u0430\u043c\u044f\u0442\u0438 \u043f\u043e\u0441\u043b\u0435 \u0435\u0451 \u043e\u0441\u0432\u043e\u0431\u043e\u0436\u0434\u0435\u043d\u0438\u044f (use-after-free) \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0435 \u043d\u0430 \u0434\u0440\u0443\u0433\u0443\u044e \u0441\u0442\u043e\u0440\u043e\u043d\u0443 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u044f \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0433\u043e \u043f\u0430\u043c\u044f\u0442\u0438 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0430, [&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-111480","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043b\u0435\u043d \u0432\u044b\u043f\u0443\u0441\u043a OpenVPN 2.6.7, \u043f\u0430\u043a\u0435\u0442\u0430 \u0434\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u044b\u0445 \u0447\u0430\u0441\u0442\u043d\u044b\u0445 \u0441\u0435\u0442\u0435\u0439, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0433\u043e 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