{"id":111332,"date":"2023-11-06T09:10:14","date_gmt":"2023-11-06T07:10:14","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimosti-v-ingress-nginx-pozvolyayushhie-skomprometirovat-klastery-kubernetes"},"modified":"2023-11-06T09:10:14","modified_gmt":"2023-11-06T07:10:14","slug":"uyazvimosti-v-ingress-nginx-pozvolyayushhie-skomprometirovat-klastery-kubernetes","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/uyazvimosti-v-ingress-nginx-pozvolyayushhie-skomprometirovat-klastery-kubernetes","title":{"rendered":"Biztons\u00e1gi r\u00e9sek az ingress-nginx-ben, amelyek vesz\u00e9lyeztethetik a Kubernetes klasztereket","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

A Kubernetes ingress controller project called ingress-nginx has revealed three vulnerabilities that allow access to the Ingress object settings in the default configuration, which include credentials for accessing Kubernetes servers, enabling privileged access to the cluster. These issues occur only in the ingress-nginx controller from the Kubernetes project and do not affect the kubernetes-ingress controller developed by NGINX developers. <\/p>\n

The ingress controller acts as a gateway and is used in Kubernetes to facilitate access from an external network to services within the cluster. The ingress-nginx controller is the most popular and utilizes szerver<\/a> NGINX to organize request forwarding to the cluster, route external requests, and balance load. The Kubernetes project provides basic ingress controllers for AWS, GCE, and nginx, the latter of which is not related to the kubernetes-ingress controller, which is maintained by F5\/NGINX.

\"Biztons\u00e1gi<\/center> <\/p>\n

The vulnerabilities CVE-2023-5043 and CVE-2023-5044 allow the execution of custom code with szerveren<\/a> a bej\u00e1rati vez\u00e9rl\u0151 processz jogainak megszerz\u00e9s\u00e9vel, amelyek helyettes\u00edt\u00e9s\u00e9hez az \u201enginx.ingress.kubernetes.io\/configuration-snippet\u201d \u00e9s az \u201enginx.ingress.kubernetes.io\/permanent-redirect\u201d param\u00e9tereket haszn\u00e1ljuk. Egyebek k\u00f6z\u00f6tt a megszerzett jogosults\u00e1gok lehet\u0151v\u00e9 teszik a token kinyer\u00e9s\u00e9t, amelyet a klaszter ir\u00e1ny\u00edt\u00e1si szintj\u00e9n val\u00f3 hiteles\u00edt\u00e9shez haszn\u00e1lnak. A CVE-2022-4886 s\u00e9r\u00fcl\u00e9kenys\u00e9g lehet\u0151v\u00e9 teszi a f\u00e1jl\u00fatvonalak ellen\u0151rz\u00e9s\u00e9nek megker\u00fcl\u00e9s\u00e9t a log_format utas\u00edt\u00e1s haszn\u00e1lat\u00e1val. <\/p>\n

Az els\u0151 k\u00e9t s\u00e9r\u00fcl\u00e9kenys\u00e9g csak az ingress-nginx 1.9.0 verzi\u00f3ja el\u0151tti kiad\u00e1sokban jelentkezik, m\u00edg az utols\u00f3 \u2014 az 1.8.0 verzi\u00f3 el\u0151ttiekben. A t\u00e1mad\u00e1s v\u00e9grehajt\u00e1s\u00e1hoz a t\u00e1mad\u00f3nak hozz\u00e1f\u00e9r\u00e9ssel kell rendelkeznie az ingress-objektum konfigur\u00e1ci\u00f3j\u00e1hoz, p\u00e9ld\u00e1ul a Kubernetes t\u00f6bbfelhaszn\u00e1l\u00f3s klasztereiben, ahol a felhaszn\u00e1l\u00f3knak lehet\u0151s\u00e9g\u00fck van objektumok l\u00e9trehoz\u00e1s\u00e1ra saj\u00e1t n\u00e9vt\u00e9rrel.
\n
Forr\u00e1s: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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