{"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\/sk\/blog\/news\/uyazvimost-v-runc-pozvolyayushhaya-poluchit-dostup-k-fs-vne-kontejnera","title":{"rendered":"Zranite\u013enos\u0165 v runc, ktor\u00e1 umo\u017e\u0148uje pr\u00edstup k FS mimo kontajnera","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

V n\u00e1stroji na sp\u00fa\u0161\u0165anie izolovan\u00fdch kontajnerov runc, ktor\u00fd sa pou\u017e\u00edva v Docker a Kubernetes, bola zisten\u00e1 zranite\u013enos\u0165 (CVE-2021-30465), ktor\u00e1 umo\u017e\u0148uje z\u00edska\u0165 pr\u00edstup z kontajnera k z\u00e1kladn\u00e9mu s\u00faborov\u00e9mu syst\u00e9mu hostite\u013esk\u00e9ho prostredia. Manipul\u00e1ciou so symbolick\u00fdmi odkazmi je mo\u017en\u00e9 pripravi\u0165 na poh\u013ead ne\u0161kodn\u00fa konfigur\u00e1ciu kontajnera, ktor\u00e1 povedie k bind-montovaniu extern\u00e9ho FS vo vn\u00fatri kontajnera. Probl\u00e9m bol odstr\u00e1nen\u00fd v aktualiz\u00e1cii runc 1.0.0-rc95. <\/p>\n

Na zneu\u017eitie zranite\u013enosti mus\u00ed \u00fato\u010dn\u00edk ma\u0165 mo\u017enos\u0165 sp\u00fa\u0161\u0165a\u0165 kontajnery s dodato\u010dn\u00fdmi bodmi montovania v konfigur\u00e1cii (napr\u00edklad probl\u00e9m sa reprodukuje v prostrediach zalo\u017een\u00fdch na Kubernetes, kde m\u00f4\u017eu pou\u017e\u00edvatelia sp\u00fa\u0161\u0165a\u0165 svoje kontajnery). Vzh\u013eadom na existenciu \u010dasov\u00e9ho okna medzi kontrolou a pou\u017eit\u00edm montovac\u00edch bodov na oddiely, ktor\u00e9 s\u00fa zdie\u013ean\u00e9 s in\u00fdmi kontajnermi, m\u00f4\u017ee \u00fato\u010dn\u00edk po\u010das sp\u00fa\u0161\u0165ania kontajnera vyu\u017ei\u0165 stav z\u00e1vodu a nahradi\u0165 pou\u017e\u00edvan\u00fd pri montovan\u00ed v kontajneri adres\u00e1r symbolick\u00fdm odkazom na oblas\u0165 mimo kore\u0148a FS kontajnera.
\n
Zdroj: 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. 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