{"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\/da\/blog\/news\/uyazvimosti-v-openvpn-i-softether-vpn","title":{"rendered":"S\u00e5rbarheder i OpenVPN og SoftEther VPN","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Udgivelsen af OpenVPN 2.6.7 er klar, en pakke til oprettelse af virtuelle private netv\u00e6rk, som g\u00f8r det muligt at etablere en krypteret forbindelse mellem to klientmaskiner eller drive en centraliseret VPN-server til samtidig brug af flere klienter. I den nye version er der blevet rettet to s\u00e5rbarheder:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2023-46850 \u2014 adgang til hukommelsesomr\u00e5det efter frigivelse (use-after-free) kan f\u00f8re til, at indholdet af proceshukommelsen sendes til den anden side af forbindelsen, samt potentielt til fjernudf\u00f8relse af kode. Problemet opst\u00e5r i konfigurationer, der bruger TLS (k\u00f8res uden parameteret \u00ab\u2014secret\u00bb).\n<li class=\"l\"> CVE-2023-46849 \u2014 en situation med deling med nul kan f\u00f8re til, at serverens adgang fjernstartes i konfigurationer, der bruger indstillingen \u00ab\u2014fragment\u00bb.    <\/ul>\n<p>Fra de ikke-sikkerhedsrelaterede \u00e6ndringer i OpenVPN 2.6.7:  <\/p>\n<ul>\n<li class=\"l\"> Tilf\u00f8jet en advarsel, n\u00e5r den anden part sender DATA_V1 pakker i et fors\u00f8g p\u00e5 at forbinde klienten OpenVPN 2.6.x til inkompatible servere baseret p\u00e5 versioner 2.4.0-2.4.4 (for at l\u00f8se inkompatibiliteten kan indstillingen \u00ab\u2014disable-dco\u00bb bruges).\n<li class=\"l\"> Den for\u00e6ldede metode bundet til OpenSSL 1.x, der bruger OpenSSL Engine til indl\u00e6sning af n\u00f8gler, er blevet fjernet. \u00c5rsagen er forfatterens modvilje mod at relicense koden med nye undtagelser for binding.\n<li class=\"l\"> Der er tilf\u00f8jet en advarsel ved forbindelse af p2p NCP-klient til <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/da\/server\/dts-shicago\/\"   title=\"server\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2912\">server<\/a> p2mp (en kombination der bruges til at operere uden forhandlingsmetoder), da der er problemer med at bruge versioner 2.6.x p\u00e5 begge sider af forbindelsen.\n<li class=\"l\"> Tilf\u00f8jet en advarsel om, at flaget \u00ab\u2014show-groups\u00bb ikke viser alle underst\u00f8ttede grupper.\n<li class=\"l\"> I parameteren \u00ab\u2014dns\u00bb er behandlingen af argumentet \u00abexclude-domains\u00bb fjernet, som dukkede op i version 2.6, men som stadig ikke underst\u00f8ttes af backend-systemer.\n<li class=\"l\"> Der er tilf\u00f8jet en advarsel, der vises, hvis kontrolmeddelelsen INFO er for stor og ikke kan videresendes til klienten.\n<li class=\"l\"> For build med MinGW og MSVC er der tilf\u00f8jet underst\u00f8ttelse af CMake build-systemet. Underst\u00f8ttelse af det gamle MSVC build-system er fjernet.  <\/ul>\n<p>Yderligere er der identificeret 9 s\u00e5rbarheder i det \u00e5bne <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/da\/vpn\/\"   title=\"VPN\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"213\">VPN<\/a>-serveren SoftEther. En af problemerne (CVE-2023-27395) har f\u00e5et kritisk faregrad \u2014 s\u00e5rbarheden skyldes en buffer-overl\u00f8b og kan f\u00f8re til fjernudf\u00f8relse af kode p\u00e5 klientsiden, n\u00e5r der fors\u00f8ges at forbinde til en server, der kontrolleres af en angriber. S\u00e5rbarheden er rettet i juniopdateringen af SoftEther VPN 4.42 Build 9798 RTM. Yderligere to s\u00e5rbarheder (CVE-2023-32634, CVE-2023-27516) muligg\u00f8r uautoriseret adgang til en VPN-session under en MITM-angreb ved anvendelse af standard credentials til RPC-serveren. S\u00e5rbarhederne er rettet i form af en patch.    <\/p>\n<p>S\u00e5rbarhederne CVE-2023-31192 og CVE-2023-32275 (patch) kan f\u00f8re til l\u00e6kage af fortrolige oplysninger i nogle pakker som f\u00f8lge af MITM-angreb. De resterende 4 s\u00e5rbarheder (CVE-2023-22325, CVE-2023-23581, CVE-2023-22308 og CVE-2023-25774) kan bruges til at for\u00e5rsage serviceafbrydelser, eksempelvis ved at tvinge forbindelsen til at blive afbrudt eller ved at krasje klienten. Der er for nylig ogs\u00e5 blevet accepteret en rettelse for 7 s\u00e5rbarheder i SoftEther VPN, detaljer om disse er endnu ikke tilg\u00e6ngelige.<br \/>\n<br \/>Kilde: <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 5.0.3 - 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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VPN-server.","canonical_url":"https:\/\/prohoster.info\/da\/blog\/news\/uyazvimosti-v-openvpn-i-softether-vpn","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"da_DK","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0432 OpenVPN \u0438 SoftEther VPN | ProHoster","og:description":"\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 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