{"id":121283,"date":"2025-01-09T15:46:01","date_gmt":"2025-01-09T13:46:01","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-openvpn-dopuskayushhaya-podstanovku-dannyh-v-plaginy-i-storonnie-obrabotchiki"},"modified":"2025-01-09T15:46:01","modified_gmt":"2025-01-09T13:46:01","slug":"uyazvimost-v-openvpn-dopuskayushhaya-podstanovku-dannyh-v-plaginy-i-storonnie-obrabotchiki","status":"publish","type":"post","link":"https:\/\/prohoster.info\/de\/blog\/news\/uyazvimost-v-openvpn-dopuskayushhaya-podstanovku-dannyh-v-plaginy-i-storonnie-obrabotchiki","title":{"rendered":"Eine Schwachstelle in OpenVPN, die eine Datenmanipulation in Plugins und externen Handlern erm\u00f6glicht","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Details zur Schwachstelle (CVE-2024-5594) im Paket zur Erstellung virtueller privater Netze OpenVPN wurden offengelegt, die zu einer Manipulation beliebiger Daten in externen ausf\u00fchrbaren Dateien oder Plugins im System auf der anderen Seite der Verbindung f\u00fchren kann. Die Schwachstelle wird durch das Fehlen einer \u00dcberpr\u00fcfung auf Null-Bytes und ung\u00fcltige Zeichen bei der Verarbeitung von Steuernachrichten, wie PUSH_REPLY, verursacht. <\/p>\n

Das Problem wurde in den Versionen OpenVPN 2.5.11 und 2.6.11 behoben, die im Juni 2024 ver\u00f6ffentlicht wurden. In den Release-Notizen wurde die Schwachstelle als geringf\u00fcgiges Problem eingestuft, das zu einer Aufzeichnung von M\u00fclldaten im Log oder einer erh\u00f6hten CPU-Belastung f\u00fchrte. In einem vor einigen Tagen ver\u00f6ffentlichten Update wurde das Problem jedoch als kritisch eingestuft (Schweregrad 9,1 von 10). <\/p>\n

Details zur Nutzung werden vorerst nicht angegeben. Die Fehlerbehebung beschr\u00e4nkt sich auf die Einstellung der Verarbeitung von Nachrichten mit ung\u00fcltigen Zeichen und die \u00dcberpr\u00fcfung ung\u00fcltiger Zeichen im gesamten Puffer und nicht nur im Teil bis zum Nullbyte. Die \u00dcberpr\u00fcfung von Sonderzeichen und Nullbyte wurde f\u00fcr die Befehle \u201eAUTH_FAILED\u201c, \u201ePUSH_*\u201c, \u201eRESTART\u201c, \u201eHALT\u201c, \u201eINFO_PRE\u201c, \u201eINFO\u201c, \u201eCR_RESPONSE\u201c, \u201eAUTH_PENDING\u201c und \u201eEXIT\u201c hinzugef\u00fcgt.
\n
Quelle: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0420\u0430\u0441\u043a\u0440\u044b\u0442\u044b \u0441\u0432\u0435\u0434\u0435\u043d\u0438\u044f \u043e\u0431 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 (CVE-2024-5594) \u0432 \u043f\u0430\u043a\u0435\u0442\u0435 \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 OpenVPN, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a \u043f\u043e\u0434\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0435 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 \u0432 \u0441\u0442\u043e\u0440\u043e\u043d\u043d\u0438\u0435 \u0438\u0441\u043f\u043e\u043b\u043d\u044f\u0435\u043c\u044b\u0435 \u0444\u0430\u0439\u043b\u044b \u0438\u043b\u0438 \u043f\u043b\u0430\u0433\u0438\u043d\u044b \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u043d\u0430 \u0434\u0440\u0443\u0433\u043e\u0439 \u0441\u0442\u043e\u0440\u043e\u043d\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u044f. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432\u044b\u0437\u0432\u0430\u043d\u0430 \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0438\u0435\u043c \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u043d\u0430\u043b\u0438\u0447\u0438\u044f \u043d\u0443\u043b\u0435\u0432\u044b\u0445 \u0431\u0430\u0439\u0442\u043e\u0432 \u0438 \u043d\u0435\u043a\u043e\u0440\u0440\u0435\u043a\u0442\u043d\u044b\u0445 \u0441\u0438\u043c\u0432\u043e\u043b\u043e\u0432 \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u0443\u043f\u0440\u0430\u0432\u043b\u044f\u044e\u0449\u0438\u0445 \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u0439, \u0442\u0430\u043a\u0438\u0445 \u043a\u0430\u043a PUSH_REPLY. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 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