{"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\/sv\/blog\/news\/uyazvimosti-v-openvpn-i-softether-vpn","title":{"rendered":"S\u00e5rbarheter i OpenVPN och SoftEther VPN","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>OpenVPN 2.6.7 har sl\u00e4ppts, vilket \u00e4r ett paket f\u00f6r att skapa virtuella privata n\u00e4tverk som m\u00f6jligg\u00f6r en krypterad anslutning mellan tv\u00e5 klientmaskiner eller att driva en centraliserad VPN-server f\u00f6r samtidig drift av flera klienter. Den nya versionen \u00e5tg\u00e4rdar tv\u00e5 s\u00e5rbarheter:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2023-46850 \u2014 en referens till minnesomr\u00e5det efter att det har frigjorts (use-after-free) kan leda till att inneh\u00e5llet i processens minne skickas till den andra sidan av anslutningen och potentiellt till fj\u00e4rrk\u00f6rning av kod. Problemet uppst\u00e5r i konfigurationer som anv\u00e4nder TLS (k\u00f6rs utan parametern \u00ab\u2014secret\u00bb).\n<li class=\"l\"> CVE-2023-46849 \u2014 uppkomsten av en division med noll kan leda till att servern f\u00f6r \u00e5tkomst ov\u00e4ntat avbryts i konfigurationer som anv\u00e4nder alternativet \u00ab\u2014fragment\u00bb.    <\/ul>\n<p>Bland de icke-s\u00e4kerhetsrelaterade \u00e4ndringarna i OpenVPN 2.6.7:  <\/p>\n<ul>\n<li class=\"l\"> Ett varningsmeddelande har lagts till n\u00e4r den andra sidan skickar DATA_V1-paket vid f\u00f6rs\u00f6k att ansluta klienten OpenVPN 2.6.x till inkompatibla servrar baserade p\u00e5 versioner 2.4.0-2.4.4 (f\u00f6r att l\u00f6sa inkompatibiliteten kan alternativet \u00ab\u2014disable-dco\u00bb anv\u00e4ndas).\n<li class=\"l\"> Den f\u00f6r\u00e5ldrade metoden kopplad till OpenSSL 1.x, som anv\u00e4nder OpenSSL Engine f\u00f6r att ladda nycklar, har tagits bort. Anledningen \u00e4r f\u00f6rfattarens ovilja att licensiera om koden med nya undantag f\u00f6r l\u00e4nkning.\n<li class=\"l\"> En varning har lagts till vid anslutning av p2p NCP-klient till <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/sv\/server\/dts-shicago\/\"   title=\"servern\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2912\">servern<\/a> p2mp (en kombination som anv\u00e4nds f\u00f6r drift utan f\u00f6rhandling av krypteringsmetoder), eftersom det finns problem med att anv\u00e4nda versioner 2.6.x p\u00e5 b\u00e5da sidor av anslutningen.\n<li class=\"l\"> Ett varningsmeddelande om att flaggan \u00ab\u2014show-groups\u00bb visar inte alla st\u00f6djda grupper har lagts till.\n<li class=\"l\"> I parametern \u00ab\u2014dns\u00bb har bearbetningen av argumentet \u00abexclude-domains\u00bb tagits bort, vilket d\u00f6k upp i version 2.6 men fortfarande inte st\u00f6ds av backend-system.\n<li class=\"l\"> En varning har lagts till som visas om kontrollmeddelandet INFO \u00e4r f\u00f6r stort och inte kan omdirigeras till klienten.\n<li class=\"l\"> F\u00f6r byggen som anv\u00e4nder MinGW och MSVC har st\u00f6d f\u00f6r byggsystemet CMake lagts till. St\u00f6det f\u00f6r det gamla byggsystemet MSVC har tagits bort.  <\/ul>\n<p>Dessutom kan man notera att 9 s\u00e5rbarheter har identifierats i den \u00f6ppna koden. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/sv\/vpn\/\"   title=\"VPN\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"213\">VPN<\/a>-servern SoftEther. En av problemen (CVE-2023-27395) har tilldelats en kritisk riskniv\u00e5 \u2014 s\u00e5rbarheten orsakas av buffert\u00f6verskridning och kan leda till fj\u00e4rrk\u00f6rning av kod p\u00e5 klientens sida vid f\u00f6rs\u00f6k att ansluta till en server som kontrolleras av en angripare. S\u00e5rbarheten \u00e5tg\u00e4rdades i juniuppdateringen av SoftEther VPN 4.42 Build 9798 RTM. Ytterligare tv\u00e5 s\u00e5rbarheter (CVE-2023-32634, CVE-2023-27516) ger m\u00f6jlighet till obeh\u00f6rig \u00e5tkomst till VPN-sessionen under en MITM-attack genom anv\u00e4ndning av standardinst\u00e4llda autentiseringsuppgifter f\u00f6r RPC-servern. S\u00e5rbarheterna \u00e5tg\u00e4rdades i form av en patch.    <\/p>\n<p>S\u00e5rbarheterna CVE-2023-31192 och CVE-2023-32275 (patch) kan leda till l\u00e4ckage av konfidentiel information i vissa paket som en f\u00f6ljd av MITM-attacker. De \u00e5terst\u00e5ende 4 s\u00e5rbarheterna (CVE-2023-22325, CVE-2023-23581, CVE-2023-22308 och CVE-2023-25774) kan anv\u00e4ndas f\u00f6r att orsaka \u00f6verbelastningstj\u00e4nst, till exempel f\u00f6r att tvinga en nedkoppling eller krascha klienten. I kodbasen f\u00f6r SoftEther VPN har nyligen ocks\u00e5 ett fel r\u00e4ttats i 7 s\u00e5rbarheter vars detaljer f\u00f6r n\u00e4rvarande \u00e4r ok\u00e4nda.<br \/>\n<br \/>K\u00e4lla: <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 5.0.4 - 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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