No sistema operacional RouterOS, utilizado em roteadores MikroTik, foi identificada uma vulnerabilidade cr\u00edtica (CVE-2023-32154), que permite a um usu\u00e1rio n\u00e3o autenticado executar c\u00f3digo remotamente no dispositivo ao enviar um an\u00fancio de roteador IPv6 especialmente formatado (RA, Router Advertisement). <\/p>\n
O problema foi causado pela falta de verifica\u00e7\u00e3o adequada dos dados recebidos externamente no processo respons\u00e1vel pelo tratamento das mensagens IPv6 RA (Router Advertisement), o que permitiu que dados fossem gravados al\u00e9m do limite do buffer, possibilitando a execu\u00e7\u00e3o de c\u00f3digo com privil\u00e9gios de root. A vulnerabilidade se manifesta nas vers\u00f5es do MikroTik RouterOS v6.xx e v7.xx, quando a configura\u00e7\u00e3o para aceitar mensagens IPv6 RA est\u00e1 ativada (\"ipv6\/settings\/set accept-router-advertisements=yes\" ou \"ipv6\/settings\/set forward=no accept-router-advertisements=yes-if-forwarding-disabled\"). <\/p>\n
A possibilidade de explora\u00e7\u00e3o da vulnerabilidade na pr\u00e1tica foi demonstrada em competi\u00e7\u00f5es Pwn2Own em Toronto, onde os pesquisadores que identificaram o problema receberam uma recompensa de $100.000 por um ataque em v\u00e1rias etapas na infraestrutura, atacando o roteador Mikrotik e utilizando-o como plataforma para atacar outros componentes da rede local (posteriormente, os atacantes obtiveram controle sobre uma impressora Canon, cujas vulnerabilidades tamb\u00e9m foram reveladas). <\/p>\n
As informa\u00e7\u00f5es sobre a vulnerabilidade foram inicialmente publicadas antes que o fabricante liberasse uma corre\u00e7\u00e3o (0-day), mas atualmente j\u00e1 est\u00e3o dispon\u00edveis as atualiza\u00e7\u00f5es RouterOS 7.9.1, 6.49.8, 6.48.7, 7.10beta8 que corrigem a vulnerabilidade. De acordo com informa\u00e7\u00f5es do projeto ZDI (Zero Day Initiative), que organiza as competi\u00e7\u00f5es Pwn2Own, o fabricante foi informado sobre a vulnerabilidade em 29 de dezembro de 2022. Representantes da MikroTik afirmam que n\u00e3o receberam notifica\u00e7\u00f5es e s\u00f3 souberam do problema em 10 de maio, ap\u00f3s o envio do aviso final sobre a divulga\u00e7\u00e3o. Al\u00e9m disso, o relat\u00f3rio sobre a vulnerabilidade menciona que informa\u00e7\u00f5es sobre a natureza do problema foram repassadas a um representante da MikroTik em particular durante a realiza\u00e7\u00e3o das competi\u00e7\u00f5es Pwn2Own em Toronto, mas segundo a MikroTik, os funcion\u00e1rios da empresa n\u00e3o participaram do evento de nenhuma forma. \u0412 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 RouterOS, \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u0439 \u0432 \u043c\u0430\u0440\u0448\u0440\u0443\u0442\u0438\u0437\u0430\u0442\u043e\u0440\u0430\u0445 MikroTik, \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-2023-32154), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0435\u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u0446\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u043c\u0443 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044e \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043a\u043e\u0434 \u043d\u0430 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0435 \u0447\u0435\u0440\u0435\u0437 \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0443 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u0430\u043d\u043e\u043d\u0441\u0430 \u043c\u0430\u0440\u0448\u0440\u0443\u0442\u0438\u0437\u0430\u0442\u043e\u0440\u0430 IPv6 (RA, Router Advertisement). \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0432\u044b\u0437\u0432\u0430\u043d\u0430 \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0438\u0435\u043c \u0434\u043e\u043b\u0436\u043d\u043e\u0439 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u043f\u043e\u0441\u0442\u0443\u043f\u0430\u044e\u0449\u0438\u0445 \u0438\u0437\u0432\u043d\u0435 \u0434\u0430\u043d\u043d\u044b\u0445 \u0432 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0435, \u043e\u0442\u0432\u0435\u0447\u0430\u044e\u0449\u0435\u043c \u0437\u0430 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0443 \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432 IPv6 RA (Router Advertisement), \u0447\u0442\u043e \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u043b\u043e \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u0437\u0430\u043f\u0438\u0441\u0438 \u0434\u0430\u043d\u043d\u044b\u0445 \u0437\u0430 \u0433\u0440\u0430\u043d\u0438\u0446\u0443 […]<\/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-108679","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\udd47Vulnerabilidade em roteadores MikroTik que leva \u00e0 execu\u00e7\u00e3o de c\u00f3digo ao processar IPv6 RA | ProHoster","description":"No sistema operacional RouterOS, utilizado em roteadores MikroTik, foi identificada uma vulnerabilidade cr\u00edtica (CVE-2023-32154), que permite a um usu\u00e1rio n\u00e3o autenticado executar c\u00f3digo remotamente no dispositivo atrav\u00e9s.","canonical_url":"https:\/\/prohoster.info\/pt\/blog\/news\/uyazvimost-v-marshrutizatorah-mikrotik-privodyashhaya-k-vypolneniyu-koda-pri-obrabotke-ipv6-ra","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"pt_PT","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\u044c \u0432 \u043c\u0430\u0440\u0448\u0440\u0443\u0442\u0438\u0437\u0430\u0442\u043e\u0440\u0430\u0445 MikroTik, \u043f\u0440\u0438\u0432\u043e\u0434\u044f\u0449\u0430\u044f \u043a \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044e \u043a\u043e\u0434\u0430 \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 IPv6 RA | ProHoster","og:description":"\u0412 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 RouterOS, \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u0439 \u0432 \u043c\u0430\u0440\u0448\u0440\u0443\u0442\u0438\u0437\u0430\u0442\u043e\u0440\u0430\u0445 MikroTik, \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-2023-32154), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0435\u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u0446\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u043c\u0443 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044e \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043a\u043e\u0434 \u043d\u0430 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0435 \u0447\u0435\u0440\u0435\u0437.","og:url":"https:\/\/prohoster.info\/pt\/blog\/news\/uyazvimost-v-marshrutizatorah-mikrotik-privodyashhaya-k-vypolneniyu-koda-pri-obrabotke-ipv6-ra","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2023-05-24T10:48:24+00:00","article:modified_time":"2023-05-24T14:23:54+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":[],"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/posts\/108679","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/comments?post=108679"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/posts\/108679\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/media?parent=108679"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/categories?post=108679"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/tags?post=108679"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
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Fonte: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"