{"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\/de\/blog\/news\/uyazvimost-v-kommutatorah-cisco-catalyst-pon-pozvolyayushhaya-vojti-cherez-telnet-bez-znaniya-parolya","title":{"rendered":"Sicherheitsanf\u00e4lligkeit in Cisco Catalyst PON Switches, die einen Zugang \u00fcber Telnet ohne Passwortwissen erm\u00f6glicht","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

In den Cisco Catalyst Switches der PON CGP-ONT-* Serie (Passive Optical Network) wurde ein kritisches Sicherheitsproblem (CVE-2021-34795) entdeckt, das es erm\u00f6glicht, bei aktiviertem Telnet-Protokoll mit Administratorrechten auf den Switch zuzugreifen, indem ein zuvor bekannter Debug-Zugang verwendet wird, der vom Hersteller in der Firmware hinterlassen wurde. Das Problem tritt nur auf, wenn die M\u00f6glichkeit des Zugriffs \u00fcber Telnet in den Einstellungen aktiviert ist, welches standardm\u00e4\u00dfig deaktiviert ist. <\/p>\n

Neben der Existenz eines Kontos mit einem zuvor bekannten Passwort wurden bei den betreffenden Modellen der Switches auch zwei Schwachstellen (CVE-2021-40112, CVE-2021-40113) in der Web-Oberfl\u00e4che gefunden, die es einem nicht authentifizierten Angreifer, der die Anmeldedaten nicht kennt, erm\u00f6glichen, Befehle mit Root-Rechten auszuf\u00fchren und \u00c4nderungen an den Einstellungen vorzunehmen. Standardm\u00e4\u00dfig ist der Zugriff auf die Web-Oberfl\u00e4che nur aus dem lokalen Netzwerk erlaubt, es sei denn, dieses Verhalten wird in den Einstellungen \u00fcberschrieben. <\/p>\n

Gleichzeitig wurde ein \u00e4hnliches Problem (CVE-2021-40119) mit einem vordefinierten Ingenieureingang im Softwareprodukt Cisco Policy Suite festgestellt, in dem ein vom Hersteller vorbereiteter SSH-Schl\u00fcssel installiert wurde, der es einem entfernten Angreifer erm\u00f6glicht, mit Root-Rechten auf das System zuzugreifen.
\n
Quelle: 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\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\udd47Sicherheitsanf\u00e4lligkeit in den Cisco Catalyst PON Switches, die den Zugriff \u00fcber Telnet ohne Passwortkenntnis erm\u00f6glicht | ProHoster","description":"In den Cisco Catalyst Switches der PON CGP-ONT-* Serie (Passive Optical Network) wurde ein 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\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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