{"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\/sl\/blog\/news\/uyazvimosti-v-openvpn-i-softether-vpn","title":{"rendered":"Varnostne ranljivosti v OpenVPN in SoftEther VPN","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Izdan je OpenVPN 2.6.7, paket za kreiranje virtuelnih privatnih mre\u017ea koji omogu\u0107ava enkriptovanu vezu izme\u0111u dva klijentska ra\u010dunara ili omogu\u0107ava rad centralizovanog VPN servera za istovremeni rad vi\u0161e klijenata. U novoj verziji otklonjene su dve ranjivosti:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2023-46850 \u2014 dostop do pomnilni\u0161kega obmo\u010dja po njegovi osvoboditvi (use-after-free) lahko pripelje do po\u0161iljanja vsebine pomnilnika procesa na drugo stran povezave ter potencialno do oddaljenega izvr\u0161evanja kode. Te\u017eava se pojavi v konfiguracijah, ki uporabljajo TLS (za\u017eenejo se brez parametra \u00ab\u2014secret\u00bb).\n<li class=\"l\"> CVE-2023-46849 \u2014 pojavitev situacije deljenja z ni\u010d lahko privede do oddaljenega spro\u017eenja nujnega zaklju\u010dka dostopnega stre\u017enika v konfiguracijah, ki uporabljajo opcijo \u00ab\u2014fragment\u00bb.    <\/ul>\n<p>Od promena koje nisu povezane s bezbedno\u0161\u0107u u OpenVPN 2.6.7:  <\/p>\n<ul>\n<li class=\"l\"> Dodano opozorilo pri po\u0161iljanju paketov DATA_V1 z druge strani pri poskusu povezovanja stranke OpenVPN 2.6.x z nezdru\u017eljivimi stre\u017eniki na osnovi razli\u010dic 2.4.0-2.4.4 (za odpravo nezdru\u017eljivosti je mogo\u010de uporabiti opcijo \u00ab\u2014disable-dco\u00bb).\n<li class=\"l\"> Ukinuta je zastarela metoda vezana za OpenSSL 1.x koja koristi OpenSSL Engine za u\u010ditavanje klju\u010deva. Kao razlog se navodi nerazvijanje autora da ponovo licencira kod sa novim izuzecima za vezivanje.\n<li class=\"l\"> Dodato je upozorenje prilikom povezivanja klijenta p2p NCP sa <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/sl\/server\/dts-shicago\/\"   title=\"stre\u017eniku\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2912\">stre\u017eniku<\/a> p2mp (kombinacija koja se koristi za rad bez dogovora o \u0161iframa), jer postoje problemi prilikom kori\u0161\u0107enja verzija 2.6.x na obe strane veze.\n<li class=\"l\"> Dodano opozorilo, da zastava \u00ab\u2014show-groups\u00bb ne prikazuje vseh podprtih skupin.\n<li class=\"l\"> V parametru \u00ab\u2014dns\u00bb je odstranjena obdelava argumenta \u00abexclude-domains\u00bb, ki se je pojavila v veji 2.6, vendar zaenkrat \u0161e ni podprt na zadnjih straneh.\n<li class=\"l\"> Dodato je upozorenje koje se prikazuje ako upravlja\u010dka poruka INFO ima preveliku veli\u010dinu i ne mo\u017ee biti prosle\u0111ena klijentu.\n<li class=\"l\"> Za izgradnje koje koriste MinGW i MSVC dodata je podr\u0161ka za sistem izgradnje CMake. Uklonjena je podr\u0161ka za stari sistem izgradnje MSVC.  <\/ul>\n<p>Pored toga, treba napomenuti otkrivanje 9 ranjivosti u otvorenom <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/sl\/vpn\/\"   title=\"VPN\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"213\">VPN<\/a>-stre\u017eniku SoftEther. Eni od te\u017eav (CVE-2023-27395) je dodeljena kriti\u010dna raven nevarnosti \u2014 ranljivost je posledica prelivanja pomnilnika in lahko privede do oddaljenega izvr\u0161evanja kode na strani stranke pri poskusu povezovanja s stre\u017enikom, ki ga nadzira napadalec. Ranljivost je bila odpravljena v junijski posodobitvi SoftEther VPN 4.42 Build 9798 RTM. \u0160e dve ranljivosti (CVE-2023-32634, CVE-2023-27516) omogo\u010data nepoobla\u0161\u010den dostop do VPN-seje med MITM-napadom z uporabo privzetih poverilnic za stre\u017enik RPC. Ranljivosti so bile odpravljene v obliki popravka.    <\/p>\n<p>Ranljivosti CVE-2023-31192 in CVE-2023-32275 (popravek) lahko povzro\u010dijo uhajanje zaupnih informacij v nekaterih paketih kot rezultat MITM napadov. Preostalih 4 ranljivosti (CVE-2023-22325, CVE-2023-23581, CVE-2023-22308 in CVE-2023-25774) se lahko uporabljajo za povzro\u010ditev zavrnitve storitev, na primer za prisilno prekinitev povezave ali nenadno kon\u010danje dela odjemalca. V kodo SoftEther VPN je bilo nedavno sprejeto popravilo 7 ranljivosti, podrobnosti o katerih trenutno \u0161e niso znane.<br \/>\n<br \/>Izvor: <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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