{"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\/nl\/blog\/news\/uyazvimost-v-cri-o-pozvolyayushhaya-poluchit-root-dostup-k-host-okruzheniyu","title":{"rendered":"Kwetsbaarheid in CRI-O, waarmee root-toegang tot de hostomgeving kan worden verkregen","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

In CRI-O, de runtime voor het beheren van ge\u00efsoleerde containers, is een kritieke kwetsbaarheid ontdekt (CVE-2022-0811) die het mogelijk maakt om de isolatie te omzeilen en eigen code op de host-systeem uit te voeren. Wanneer CRI-O in plaats van containerd en Docker wordt gebruikt voor het opstarten van containers die draaien op het Kubernetes-platform, kan een aanvaller controle krijgen over elke node in het Kubernetes-cluster. Voor het uitvoeren van de aanval zijn alleen de rechten nodig om zijn eigen container in het Kubernetes-cluster te draaien. <\/p>\n

De kwetsbaarheid wordt veroorzaakt door de mogelijkheid om de sysctl-kernparameter «kernel.core_pattern» («\\\/proc\\\/sys\\\/kernel\\\/core_pattern») te wijzigen, waartoe geen toegang werd geblokkeerd, ondanks dat deze niet tot de veilige parameters behoort die alleen binnen de naamruimte van de huidige container kunnen worden gewijzigd. Met deze parameter kan een gebruiker vanuit de container het gedrag van de Linux-kernel met betrekking tot de verwerking van core-dumpbestanden aan de kant van de hostomgeving wijzigen en een willekeurige opdracht met root-rechten aan de hostzijde uitvoeren door een handler op te geven van het type «|\\\/bin\\\/sh -c ‘opdrachten'». <\/p>\n

Het probleem doet zich voor vanaf de release CRI-O 1.19.0 en is opgelost in de updates 1.19.6, 1.20.7, 1.21.6, 1.22.3, 1.23.2 en 1.24.0. In de distributies komt het probleem voor in de producten Red Hat OpenShift Container Platform en openSUSE\/SUSE, waar in de repositories een cri-o-pakket beschikbaar is.
\n
Bron: 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\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\udd47Kwetsbaarheid in CRI-O die root-toegang tot de host-omgeving mogelijk maakt | ProHoster","description":"In CRI-O, de runtime voor het beheren van ge\u00efsoleerde containers, is een kritieke kwetsbaarheid ontdekt (CVE-2022-0811) die het mogelijk maakt om de isolatie te omzeilen en eigen code op de host-systeem uit te 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