{"id":103581,"date":"2022-03-21T21:36:47","date_gmt":"2022-03-21T19:36:47","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-cri-o-pozvolyayushhaya-poluchit-root-dostup-k-host-okruzheniyu"},"modified":"2022-03-21T21:36:47","modified_gmt":"2022-03-21T19:36:47","slug":"uyazvimost-v-cri-o-pozvolyayushhaya-poluchit-root-dostup-k-host-okruzheniyu","status":"publish","type":"post","link":"https:\/\/prohoster.info\/de\/blog\/news\/uyazvimost-v-cri-o-pozvolyayushhaya-poluchit-root-dostup-k-host-okruzheniyu","title":{"rendered":"Eine Sicherheitsanf\u00e4lligkeit in CRI-O, die Root-Zugriff auf die Host-Umgebung erm\u00f6glicht.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

In CRI-O, der Runtime zur Verwaltung isolierter Container, wurde eine kritische Sicherheitsanf\u00e4lligkeit (CVE-2022-0811) entdeckt, die eine Umgehung der Isolation erm\u00f6glicht und es erlaubt, eigenen Code auf der Host-Systemseite auszuf\u00fchren. Wenn CRI-O anstelle von containerd und Docker verwendet wird, um Container zu starten, die unter der Kubernetes-Plattform laufen, kann ein Angreifer die Kontrolle \u00fcber jeden Knoten im Kubernetes-Cluster erlangen. F\u00fcr den Angriff sind ausreichende Berechtigungen erforderlich, um eigenen Container im Kubernetes-Cluster zu starten. <\/p>\n

Die Schwachstelle resultiert aus der M\u00f6glichkeit, den sysctl-Kernelparameter «kernel.core_pattern» («\/proc\/sys\/kernel\/core_pattern») zu \u00e4ndern, auf den trotz seiner unsicheren \u00c4nderbarkeit, die nur im Namensraum des aktuellen Containers gilt, kein Zugriffsschutz besteht. Mit diesem Parameter kann der Benutzer im Container das Verhalten des Linux-Kernels hinsichtlich der Handhabung von Core-Dateien im Host-Umfeld \u00e4ndern und willk\u00fcrliche Befehle mit root-Rechten im Host ausf\u00fchren, indem er einen Handler vom Typ «|\/bin\/sh -c ‘Befehle'» angibt. <\/p>\n

Das Problem tritt ab der Version CRI-O 1.19.0 auf und wurde in den Aktualisierungen 1.19.6, 1.20.7, 1.21.6, 1.22.3, 1.23.2 und 1.24.0 behoben. In den Distributionen zeigt sich das Problem in den Produkten Red Hat OpenShift Container Platform und openSUSE\/SUSE, in deren Repositories das Paket cri-o vorhanden ist.
\n
Quelle: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 CRI-O, runtime \u0434\u043b\u044f \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0438\u0437\u043e\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u043c\u0438 \u043a\u043e\u043d\u0442\u0435\u0439\u043d\u0435\u0440\u0430\u043c\u0438, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2022-0811), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043e\u0431\u043e\u0439\u0442\u0438 \u0438\u0437\u043e\u043b\u044f\u0446\u0438\u044e \u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u0441\u0432\u043e\u0439 \u043a\u043e\u0434 \u043d\u0430 \u0441\u0442\u043e\u0440\u043e\u043d\u0435 \u0445\u043e\u0441\u0442-\u0441\u0438\u0441\u0442\u0435\u043c\u044b. \u0412 \u0441\u043b\u0443\u0447\u0430\u0435 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f CRI-O 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\u043f\u0440\u0430\u0432 \u0434\u043b\u044f \u0437\u0430\u043f\u0443\u0441\u043a\u0430 […]<\/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-103581","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 CRI-O, die root-Zugriff auf die Host-Umgebung erm\u00f6glicht | ProHoster","description":"\u0412 CRI-O, runtime \u0434\u043b\u044f \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0438\u0437\u043e\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u043c\u0438 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