{"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\/ro\/blog\/news\/uyazvimosti-v-ingress-nginx-pozvolyayushhie-skomprometirovat-klastery-kubernetes","title":{"rendered":"Vulnerabilit\u0103\u021bi \u00een ingress-nginx, care permit compromiterea clusterelor Kubernetes","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\u00cen proiectul \u00een dezvoltare Kubernetes ingress-controller ingress-nginx au fost identificate trei vulnerabilit\u0103\u021bi care permit, \u00een configura\u021bia implicit\u0103, accesul la set\u0103rile obiectului Ingress, unde, printre altele, sunt stocate \u0219i datele de autentificare pentru accesarea serverelor Kubernetes, oferind acces privilegiat la cluster. Problemele apar doar \u00een ingress-controller ingress-nginx al proiectului Kubernetes \u0219i nu afecteaz\u0103 controller-ul kubernetes-ingress, dezvoltat de echipa NGINX. <\/p>\n

Ingress-controller-ul func\u021bioneaz\u0103 ca un gateway \u0219i este folosit \u00een Kubernetes pentru a organiza accesul din re\u021beaua extern\u0103 la serviciile din interiorul cluster-ului. Controller-ul ingress-nginx este cel mai popular \u0219i utilizeaz\u0103 serverul<\/a> NGINX pentru redirec\u021bionarea apelurilor c\u0103tre cluster, rutarea cererilor externe \u0219i balancearea \u00eenc\u0103rc\u0103turii. Proiectul Kubernetes ofer\u0103 ingress-controller-e de baz\u0103 pentru AWS, GCE \u0219i nginx, ultimul nefiind legat de controller-ul kubernetes-ingress, \u00eentre\u021binerea c\u0103ruia este asigurat\u0103 de compania F5\/NGINX.

\"Vulnerabilit\u0103\u021bi<\/center> <\/p>\n

Vulnerabilit\u0103\u021bile CVE-2023-5043 \u0219i CVE-2023-5044 permit execu\u021bia de cod personal server<\/a> cu drepturile procesului ingress-controller, folosind pentru inlocuirea sa parametrii «nginx.ingress.kubernetes.io\/configuration-snippet» si «nginx.ingress.kubernetes.io\/permanent-redirect. Printre altele, drepturile de acces ob\u021binute permit extragerea unui token utilizat pentru autentificarea la nivel de control al clusterele. Vulnerabilitatea CVE-2022-4886 permite ocolirea verific\u0103rii c\u0103ilor de fi\u0219iere, folosind directiva log_format. <\/p>\n

Primele dou\u0103 vulnerabilit\u0103\u021bi apar doar \u00een versiunile ingress-nginx \u00eenainte de versiunea 1.9.0, iar ultima \u2014 \u00eenainte de versiunea 1.8.0. Pentru a efectua un atac, un actor r\u0103u inten\u021bionat trebuie s\u0103 aib\u0103 acces la configura\u021bia obiectului ingress, de exemplu, \u00een clusterele Kubernetes multicompaniile, \u00een care utilizatorii au permisiunea de a crea obiecte \u00een spa\u021biul lor de nume.
\n
Sursa: opennet.ro<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u043c\u043e\u043c \u043f\u0440\u043e\u0435\u043a\u0442\u043e\u043c Kubernetes ingress-\u043a\u043e\u043d\u0442\u0440\u043e\u043b\u043b\u0435\u0440\u0435 ingress-nginx \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u044b \u0442\u0440\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0435 \u0432 \u043a\u043e\u043d\u0444\u0438\u0433\u0443\u0440\u0430\u0446\u0438\u0438 \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u0434\u043e\u0441\u0442\u0443\u043f \u043a \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0430\u043c \u043e\u0431\u044a\u0435\u043a\u0442\u0430 Ingress, \u0432 \u043a\u043e\u0442\u043e\u0440\u044b\u0445, \u0441\u0440\u0435\u0434\u0438 \u043f\u0440\u043e\u0447\u0435\u0433\u043e, \u0445\u0440\u0430\u043d\u044f\u0442\u0441\u044f \u0438 \u0443\u0447\u0451\u0442\u043d\u044b\u0435 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\u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u043c\u044b\u0439 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0430\u043c\u0438 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":111333,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-111332","post","type-post","status-publish","format-standard","has-post-thumbnail","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\udd47Vulnerabilit\u0103\u021bi \u00een ingress-nginx care pot compromite clusterele Kubernetes | ProHoster","description":"\u00cen proiectul \u00een dezvoltare Kubernetes ingress-controller ingress-nginx au fost identificate trei vulnerabilit\u0103\u021bi care permit, \u00een configura\u021bia implicit\u0103, accesul la set\u0103rile obiectului Ingress, care, printre altele, sunt stocate \u0219i.","canonical_url":"https:\/\/prohoster.info\/ro\/blog\/news\/uyazvimosti-v-ingress-nginx-pozvolyayushhie-skomprometirovat-klastery-kubernetes","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"ro_RO","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0432 ingress-nginx, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0435 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