{"id":100218,"date":"2021-05-20T22:22:38","date_gmt":"2021-05-20T20:22:38","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-runc-pozvolyayushhaya-poluchit-dostup-k-fs-vne-kontejnera"},"modified":"2021-05-20T22:22:38","modified_gmt":"2021-05-20T20:22:38","slug":"uyazvimost-v-runc-pozvolyayushhaya-poluchit-dostup-k-fs-vne-kontejnera","status":"publish","type":"post","link":"https:\/\/prohoster.info\/de\/blog\/novosti-interneta\/uyazvimost-v-runc-pozvolyayushhaya-poluchit-dostup-k-fs-vne-kontejnera","title":{"rendered":"Eine Schwachstelle in runc, die den Zugriff auf das Dateisystem au\u00dferhalb des Containers erm\u00f6glicht.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Im Tool zur Ausf\u00fchrung von isolierten Containern runc, das in Docker und Kubernetes verwendet wird, wurde eine Sicherheitsanf\u00e4lligkeit (CVE-2021-30465) entdeckt, die es erm\u00f6glicht, von einem Container auf das zugrunde liegende Dateisystem der Host-Umgebung zuzugreifen. Durch die Manipulation von symbolischen Links kann eine scheinbar harmlose Containerkonfiguration erstellt werden, die zu einer Bind-Montage des externen Dateisystems innerhalb des Containers f\u00fchrt. Das Problem wurde mit dem Update runc 1.0.0-rc95 behoben. <\/p>\n

Um die Sicherheitsanf\u00e4lligkeit auszunutzen, muss der Angreifer die M\u00f6glichkeit haben, Container mit zus\u00e4tzlichen Montagepunkten in der Konfiguration zu starten (zum Beispiel tritt das Problem in Kubernetes-Umgebungen auf, in denen Benutzer ihre Container starten k\u00f6nnen). Aufgrund des zeitlichen Fensters zwischen der \u00dcberpr\u00fcfung und der Nutzung der Montagepunkte auf Partitionen, die mit anderen Containern gemeinsam genutzt werden, kann der Angreifer w\u00e4hrend des Starts des Containers einen Zeitangriff ausnutzen und das Verzeichnis, das beim Montieren im Container verwendet wird, durch einen symbolischen Link auf einen Bereich au\u00dferhalb des Wurzel-Dateisystems des Containers ersetzen.
\n
Quelle: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u0438 \u0434\u043b\u044f \u0437\u0430\u043f\u0443\u0441\u043a\u0430 \u0438\u0437\u043e\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u043a\u043e\u043d\u0442\u0435\u0439\u043d\u0435\u0440\u043e\u0432 runc, \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u043c \u0432 Docker \u0438 Kubernetes, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2021-30465), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u0434\u043e\u0441\u0442\u0443\u043f \u0438\u0437 \u043a\u043e\u043d\u0442\u0435\u0439\u043d\u0435\u0440\u0430 \u043a \u043e\u0441\u043d\u043e\u0432\u043d\u043e\u0439 \u0444\u0430\u0439\u043b\u043e\u0432\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u0445\u043e\u0441\u0442-\u043e\u043a\u0440\u0443\u0436\u0435\u043d\u0438\u044f. \u0427\u0435\u0440\u0435\u0437 \u043c\u0430\u043d\u0438\u043f\u0443\u043b\u044f\u0446\u0438\u0438 \u0441 \u0441\u0438\u043c\u0432\u043e\u043b\u0438\u0447\u0435\u0441\u043a\u0438\u043c\u0438 \u0441\u0441\u044b\u043b\u043a\u0430\u043c\u0438 \u043c\u043e\u0436\u043d\u043e \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u0438\u0442\u044c \u043d\u0430 \u0432\u0438\u0434 \u0431\u0435\u0437\u043e\u0431\u0438\u0434\u043d\u0443\u044e \u043a\u043e\u043d\u0444\u0438\u0433\u0443\u0440\u0430\u0446\u0438\u044e \u043a\u043e\u043d\u0442\u0435\u0439\u043d\u0435\u0440\u0430, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u0440\u0438\u0432\u0435\u0434\u0451\u0442 \u043a bind-\u043c\u043e\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044e \u0432\u043d\u0435\u0448\u043d\u0435\u0439 \u0424\u0421 \u0432\u043d\u0443\u0442\u0440\u0438 \u043a\u043e\u043d\u0442\u0435\u0439\u043d\u0435\u0440\u0430. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0432 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0438 runc 1.0.0-rc95. \u0414\u043b\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0438\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-100218","post","type-post","status-publish","format-standard","hentry","category-novosti-interneta"],"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\udd47Schwachstelle in runc erm\u00f6glicht Zugriff auf das Dateisystem au\u00dferhalb des Containers | ProHoster","description":"Im Tool zur Ausf\u00fchrung isolierter Container runc, das in Docker und Kubernetes verwendet wird, wurde eine Sicherheitsanf\u00e4lligkeit (CVE-2021-30465) entdeckt, die es erm\u00f6glicht, von einem Container aus auf das Haupt-Dateisystem der Host-Umgebung zuzugreifen. Durch Manipulationen mit symbolischen Links kann eine scheinbar harmlose Container-Konfiguration erstellt werden, die zu einem Bind-Mount eines externen Dateisystems innerhalb des Containers f\u00fchrt. Das Problem wurde im Update runc 1.0.0-rc95 behoben. Um die Schwachstelle auszunutzen, ben\u00f6tigt ein Angreifer...","canonical_url":"https:\/\/prohoster.info\/de\/blog\/novosti-interneta\/uyazvimost-v-runc-pozvolyayushhaya-poluchit-dostup-k-fs-vne-kontejnera","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"de_DE","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 runc, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u0434\u043e\u0441\u0442\u0443\u043f \u043a \u0424\u0421 \u0432\u043d\u0435 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