{"id":184170,"date":"2026-11-06T23:40:44","date_gmt":"2026-11-06T21:40:44","guid":{"rendered":"https:\/\/prohoster.info\/blog\/news\/uyazvimost-v-paketnom-menedzhere-apt-pozvolyayushhaya-sovershit-mitm-ataku-dlya-polucheniya-prav-root"},"modified":"2026-11-06T23:40:54","modified_gmt":"2026-11-06T21:40:54","slug":"apt-package-manager-vulnerability-allows-attackers-to-gain-root-privileges-via-mitm-attacks","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/apt-package-manager-vulnerability-allows-attackers-to-gain-root-privileges-via-mitm-attacks","title":{"rendered":"Vulnerabilidade no gerenciador de pacotes APT que permite um ataque MITM para obter privil\u00e9gios de root.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Foram publicados lan\u00e7amentos corretivos para a ferramenta de gerenciamento de pacotes APT, que corrigem uma vulnerabilidade (CVE-2026-109518) que permite contornar a verifica\u00e7\u00e3o ao carregar arquivos e executar c\u00f3digo com privil\u00e9gios de root. No total, foram formados 13 lan\u00e7amentos, abrangendo todas as ramifica\u00e7\u00f5es formadas nos \u00faltimos 10 anos do APT, come\u00e7ando com a vers\u00e3o 1.2.x. As atualiza\u00e7\u00f5es dos pacotes com a corre\u00e7\u00e3o da vulnerabilidade tamb\u00e9m j\u00e1 foram formadas para v\u00e1rias vers\u00f5es do Debian, Ubuntu e Deepin. Na configura\u00e7\u00e3o padr\u00e3o, o problema afeta todos os lan\u00e7amentos a partir do Debian 12 e Ubuntu 22.04. A explora\u00e7\u00e3o de vers\u00f5es mais antigas \u00e9 poss\u00edvel se o par\u00e2metro Acquire::Retries for configurado com um valor maior que 0.<\/p>\n

Um atacante que conseguir interferir no tr\u00e1fego HTTP entre o usu\u00e1rio e o reposit\u00f3rio de pacotes durante a instala\u00e7\u00e3o de um pacote pode conseguir instalar uma vers\u00e3o alterada e n\u00e3o verificada do pacote, permitindo que ele obtenha privil\u00e9gios de root no sistema. O ataque pode ser realizado, por exemplo, atrav\u00e9s da comprometimento de espelhos, servidores proxy, pontos de acesso sem fio ou gateways do provedor. No relat\u00f3rio de vulnerabilidade, os detalhes n\u00e3o s\u00e3o mencionados, sendo indicado apenas que o problema \u00e9 causado por um manuseio incorreto de links duros. Segundo o patch, onde a abertura do arquivo com a flag FileFd::Empty (O_TRUNC) foi substitu\u00edda por FileFd::Exclusive (O_EXCL), ao retomar um download interrompido, o atacante poderia conseguir a sobrescri\u00e7\u00e3o de dados para os quais um hash j\u00e1 havia sido realizado na primeira carga.
\n
Fonte: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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\u0441\u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u044b \u0434\u043b\u044f \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0445 \u0432\u0435\u0440\u0441\u0438\u0439 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-184170","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\n","aioseo_head_json":{"title":"\ud83e\udd47Vulnerabilidade no gerenciador de pacotes APT, permitindo um ataque MITM para obter direitos de root | ProHoster","description":"Foram publicados lan\u00e7amentos corretivos para a ferramenta de gerenciamento de pacotes APT, que corrigem uma vulnerabilidade (CVE-2026-109518) que permite contornar a verifica\u00e7\u00e3o ao carregar arquivos e executar c\u00f3digo com privil\u00e9gios de root.","canonical_url":"https:\/\/prohoster.info\/pt\/blog\/news\/apt-package-manager-vulnerability-allows-attackers-to-gain-root-privileges-via-mitm-attacks","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 \u043f\u0430\u043a\u0435\u0442\u043d\u043e\u043c \u043c\u0435\u043d\u0435\u0434\u0436\u0435\u0440\u0435 APT, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0441\u043e\u0432\u0435\u0440\u0448\u0438\u0442\u044c MITM-\u0430\u0442\u0430\u043a\u0443 \u0434\u043b\u044f \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u0438\u044f \u043f\u0440\u0430\u0432 root | ProHoster","og:description":"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u044b \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u0432\u044b\u043f\u0443\u0441\u043a\u0438 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u044f \u0434\u043b\u044f \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u043f\u0430\u043a\u0435\u0442\u0430\u043c\u0438 APT, \u0432 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2026-109518), \u0434\u0430\u044e\u0449\u0430\u044f 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\u0441\u0432\u043e\u0435\u0433\u043e.","og:url":"https:\/\/prohoster.info\/pt\/blog\/news\/apt-package-manager-vulnerability-allows-attackers-to-gain-root-privileges-via-mitm-attacks","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":"2026-11-06T21:40:44+00:00","article:modified_time":"2026-11-06T21:40:54+00:00","article:publisher":"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\/184170","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\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/comments?post=184170"}],"version-history":[{"count":1,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/posts\/184170\/revisions"}],"predecessor-version":[{"id":184171,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/posts\/184170\/revisions\/184171"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/media?parent=184170"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/categories?post=184170"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/pt\/wp-json\/wp\/v2\/tags?post=184170"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}