{"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\/cs\/blog\/news\/uyazvimost-v-cri-o-pozvolyayushhaya-poluchit-root-dostup-k-host-okruzheniyu","title":{"rendered":"Zranitelnost v CRI-O, kter\u00e1 umo\u017e\u0148uje z\u00edskat root p\u0159\u00edstup do hostitelsk\u00e9ho prost\u0159ed\u00ed.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

V CRI-O, runtime pro spr\u00e1vu izolovan\u00fdch kontejner\u016f, byla nalezena kritick\u00e1 zranitelnost (CVE-2022-0811), kter\u00e1 umo\u017e\u0148uje obej\u00edt izolaci a vykonat sv\u016fj k\u00f3d na stran\u011b hostitelsk\u00e9ho syst\u00e9mu. V p\u0159\u00edpad\u011b pou\u017eit\u00ed CRI-O nam\u00edsto containerd a Docker pro organizaci spu\u0161t\u011bn\u00ed kontejner\u016f b\u011b\u017e\u00edc\u00edch na platform\u011b Kubernetes, \u00fato\u010dn\u00edk m\u016f\u017ee z\u00edskat kontrolu nad jak\u00fdmkoliv uzlem v clusteru Kubernetes. Pro proveden\u00ed \u00fatoku sta\u010d\u00ed m\u00edt opr\u00e1vn\u011bn\u00ed ke spu\u0161t\u011bn\u00ed sv\u00e9ho kontejneru v clusteru Kubernetes. <\/p>\n

Zranitelnost je zp\u016fsobena mo\u017enost\u00ed zm\u011bny parametru sysctl j\u00e1dra «kernel.core_pattern» (« \/proc\/sys\/kernel\/core_pattern»), k jeho\u017e p\u0159\u00edstupu nebyla omezen\u00ed, i kdy\u017e nen\u00ed sou\u010d\u00e1st\u00ed bezpe\u010dn\u00fdch parametr\u016f pro zm\u011bnu, kter\u00e9 plat\u00ed pouze v prostoru n\u00e1zv\u016f aktu\u00e1ln\u00edho kontejneru. Pomoc\u00ed tohoto parametru m\u016f\u017ee u\u017eivatel z kontejneru zm\u011bnit chov\u00e1n\u00ed j\u00e1dra Linuxu ohledn\u011b zpracov\u00e1n\u00ed core soubor\u016f na stran\u011b hostitelsk\u00e9ho prost\u0159ed\u00ed a uspo\u0159\u00e1dat spu\u0161t\u011bn\u00ed libovoln\u00e9ho p\u0159\u00edkazu s pr\u00e1vy root na stran\u011b hostitele, kdy\u017e uvede zpracovatele typu «| \/bin\/sh -c ‘p\u0159\u00edkazy'». <\/p>\n

Probl\u00e9m se projevuje od verze CRI-O 1.19.0 a byl odstran\u011bn v aktualizac\u00edch 1.19.6, 1.20.7, 1.21.6, 1.22.3, 1.23.2 a 1.24.0. V distribu\u010dn\u00edch produktech se probl\u00e9m projevuje v produktech Red Hat OpenShift Container Platform a openSUSE\/SUSE, ve kter\u00fdch je k dispozici bal\u00ed\u010dek cri-o.
\n
Zdroj: 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 \u0432\u043c\u0435\u0441\u0442\u043e containerd \u0438 Docker \u0434\u043b\u044f \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u0437\u0430\u043f\u0443\u0441\u043a\u0430 \u043a\u043e\u043d\u0442\u0435\u0439\u043d\u0435\u0440\u043e\u0432, \u0440\u0430\u0431\u043e\u0442\u0430\u044e\u0449\u0438\u0445 \u043f\u043e\u0434 \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435\u043c \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b Kubernetes, \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0438\u0439 \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u044c \u043d\u0430\u0434 \u043b\u044e\u0431\u044b\u043c \u0443\u0437\u043b\u043e\u043c \u0432 \u043a\u043b\u0430\u0441\u0442\u0435\u0440\u0435 Kubernetes. \u0414\u043b\u044f \u043f\u0440\u043e\u0432\u0435\u0434\u0435\u043d\u0438\u044f \u0430\u0442\u0430\u043a\u0438 \u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e \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\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\udd47Zranitelnost v CRI-O, kter\u00e1 umo\u017e\u0148uje z\u00edskat root p\u0159\u00edstup k hostitelsk\u00e9mu prost\u0159ed\u00ed | ProHoster","description":"V CRI-O, runtime pro spr\u00e1vu izolovan\u00fdch kontejner\u016f, byla nalezena kritick\u00e1 zranitelnost (CVE-2022-0811), kter\u00e1 umo\u017e\u0148uje obej\u00edt izolaci a vykonat 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