{"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\/en\/blog\/news\/uyazvimost-v-cri-o-pozvolyayushhaya-poluchit-root-dostup-k-host-okruzheniyu","title":{"rendered":"A vulnerability in CRI-O allows root access to the host environment","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

In CRI-O, a runtime for managing isolated containers, a critical vulnerability (CVE-2022-0811) has been identified that allows isolation to be bypassed and code to be executed on the host system. If CRI-O is used instead of containerd and Docker to manage the execution of containers running on the Kubernetes platform, an attacker could gain control over any node in the Kubernetes cluster. To conduct the attack, it is sufficient to have permissions to run their own container in the Kubernetes cluster. <\/p>\n

The vulnerability arises from the ability to modify the sysctl kernel parameter 'kernel.core_pattern' ('\/proc\/sys\/kernel\/core_pattern'), access to which was not restricted, despite it not being among the safe parameters for modification, applicable only within the namespace of the current container. Using this parameter, a user from the container can alter the behavior of the Linux kernel regarding the handling of core files on the host environment and orchestrate the execution of arbitrary commands with root privileges on the host side by specifying a handler of the type '|\/bin\/sh -c 'commands''. <\/p>\n

The issue has been present since the release of CRI-O 1.19.0 and has been resolved in updates 1.19.6, 1.20.7, 1.21.6, 1.22.3, 1.23.2, and 1.24.0. The problem appears in distributions in Red Hat OpenShift Container Platform and openSUSE\/SUSE, where the cri-o package is available in their repositories.
\n
Source: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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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\udd47A vulnerability in CRI-O allows root access to the host environment | ProHoster","description":"In CRI-O, a runtime for managing isolated containers, a critical vulnerability (CVE-2022-0811) has been discovered that allows isolation to be bypassed and code to be executed on the host 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