{"id":102232,"date":"2021-11-07T15:36:40","date_gmt":"2021-11-07T13:36:40","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-kommutatorah-cisco-catalyst-pon-pozvolyayushhaya-vojti-cherez-telnet-bez-znaniya-parolya"},"modified":"2021-11-07T15:36:40","modified_gmt":"2021-11-07T13:36:40","slug":"uyazvimost-v-kommutatorah-cisco-catalyst-pon-pozvolyayushhaya-vojti-cherez-telnet-bez-znaniya-parolya","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/news\/uyazvimost-v-kommutatorah-cisco-catalyst-pon-pozvolyayushhaya-vojti-cherez-telnet-bez-znaniya-parolya","title":{"rendered":"S\u00e5rbarhet i Cisco Catalyst PON-switchar som till\u00e5ter inloggning via telnet utan l\u00f6senord","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

I Cisco Catalyst-switchar av PON CGP-ONT-* (Passive Optical Network) har en kritisk s\u00e4kerhetsproblem identifierats (CVE-2021-34795) som m\u00f6jligg\u00f6r att, n\u00e4r telnet-protokollet aktiveras, ansluta till switchen med administrat\u00f6rsr\u00e4ttigheter genom att anv\u00e4nda ett f\u00f6rutbest\u00e4mt debug-konto som l\u00e4mnats av tillverkaren i firmware. Problemet uppst\u00e5r endast n\u00e4r m\u00f6jligheten till telnet-\u00e5tkomst aktiveras i inst\u00e4llningarna, vilket \u00e4r inaktiverat som standard. <\/p>\n

F\u00f6rutom det f\u00f6rutbest\u00e4mda kontot med ett k\u00e4nt l\u00f6senord har det i de aktuella modellerna av switchar ocks\u00e5 identifierats tv\u00e5 s\u00e5rbarheter (CVE-2021-40112, CVE-2021-40113) i webbgr\u00e4nssnittet, vilket m\u00f6jligg\u00f6r att en icke-autentiserad angripare, som inte k\u00e4nner till inloggningsuppgifterna, kan k\u00f6ra sina kommandon med root-r\u00e4ttigheter och g\u00f6ra \u00e4ndringar i inst\u00e4llningarna. Som standard \u00e4r \u00e5tkomst till webbgr\u00e4nssnittet endast till\u00e5ten fr\u00e5n det lokala n\u00e4tverket om detta beteende inte har \u00e5sidosatts i inst\u00e4llningarna. <\/p>\n

Samtidigt har ett liknande problem (CVE-2021-40119) med en f\u00f6rutbest\u00e4md ingenj\u00f6rsinloggning identifierats i Cisco Policy Suite-programvaran, d\u00e4r en f\u00f6rberedd SSH-nyckel installerades av tillverkaren, vilket g\u00f6r att en fj\u00e4rrangripare kan f\u00e5 tillg\u00e5ng till systemet med root-r\u00e4ttigheter.
\n
K\u00e4lla: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u043a\u043e\u043c\u043c\u0443\u0442\u0430\u0442\u043e\u0440\u0430\u0445 Cisco Catalyst \u0441\u0435\u0440\u0438\u0438 PON CGP-ONT-* (Passive Optical Network) \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0441 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u044c\u044e (CVE-2021-34795), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043f\u0440\u0438 \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0438 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 telnet \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0438\u0442\u044c\u0441\u044f \u043a \u043a\u043e\u043c\u043c\u0443\u0442\u0430\u0442\u043e\u0440\u0443 \u0441 \u043f\u0440\u0430\u0432\u0430\u043c\u0438 \u0430\u0434\u043c\u0438\u043d\u0438\u0441\u0442\u0440\u0430\u0442\u043e\u0440\u0430, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044f 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\u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e. \u041a\u0440\u043e\u043c\u0435 \u043d\u0430\u043b\u0438\u0447\u0438\u044f \u0443\u0447\u0451\u0442\u043d\u043e\u0439 […]<\/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-102232","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47 S\u00e5rbarhet i Cisco Catalyst PON-switchar som m\u00f6jligg\u00f6r \u00e5tkomst via telnet utan att k\u00e4nna till l\u00f6senordet | ProHoster","description":"I Cisco Catalyst-switchar av PON CGP-ONT-* (Passive Optical Network) har en kritisk s\u00e4kerhetsproblem identifierats (CVE-2021-34795) som m\u00f6jligg\u00f6r anslutning till switchen via telnet.","canonical_url":"https:\/\/prohoster.info\/sv\/blog\/news\/uyazvimost-v-kommutatorah-cisco-catalyst-pon-pozvolyayushhaya-vojti-cherez-telnet-bez-znaniya-parolya","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"sv_SE","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\u044c \u0432 \u043a\u043e\u043c\u043c\u0443\u0442\u0430\u0442\u043e\u0440\u0430\u0445 Cisco Catalyst PON, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0432\u043e\u0439\u0442\u0438 \u0447\u0435\u0440\u0435\u0437 telnet \u0431\u0435\u0437 \u0437\u043d\u0430\u043d\u0438\u044f \u043f\u0430\u0440\u043e\u043b\u044f | ProHoster","og:description":"\u0412 \u043a\u043e\u043c\u043c\u0443\u0442\u0430\u0442\u043e\u0440\u0430\u0445 Cisco Catalyst \u0441\u0435\u0440\u0438\u0438 PON CGP-ONT-* (Passive Optical Network) \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0441 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u044c\u044e (CVE-2021-34795), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043f\u0440\u0438 \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0438 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 telnet \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0438\u0442\u044c\u0441\u044f \u043a 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