{"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\/fr\/blog\/news\/apt-package-manager-vulnerability-allows-attackers-to-gain-root-privileges-via-mitm-attacks","title":{"rendered":"Vuln\u00e9rabilit\u00e9 dans le gestionnaire de paquets APT, permettant d'effectuer une attaque MITM pour obtenir des droits root","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Des mises \u00e0 jour correctives de l'outil de gestion de paquets APT ont \u00e9t\u00e9 publi\u00e9es, corrigeant la vuln\u00e9rabilit\u00e9 (CVE-2026-109518) qui permet de contourner la v\u00e9rification lors du t\u00e9l\u00e9chargement de fichiers et d'ex\u00e9cuter du code avec des privil\u00e8ges root. Au total, 13 versions ont \u00e9t\u00e9 cr\u00e9\u00e9es, couvrant toutes les branches APT g\u00e9n\u00e9r\u00e9es au cours des 10 derni\u00e8res ann\u00e9es, \u00e0 partir de 1.2.x. Des mises \u00e0 jour de paquets contenant la correction de vuln\u00e9rabilit\u00e9 ont \u00e9galement \u00e9t\u00e9 pr\u00e9par\u00e9es pour diverses versions de Debian, Ubuntu et Deepin. Dans la configuration par d\u00e9faut, le probl\u00e8me concerne toutes les versions \u00e0 partir de Debian 12 et Ubuntu 22.04. L'exploitation de versions plus anciennes est possible si le param\u00e8tre Acquire::Retries est d\u00e9fini sur une valeur sup\u00e9rieure \u00e0 0.<\/p>\n

Un attaquant capable de s'immiscer dans le trafic HTTP entre l'utilisateur et le d\u00e9p\u00f4t de paquets lors de l'installation d'un paquet peut r\u00e9ussir \u00e0 installer une version falsifi\u00e9e et non v\u00e9rifi\u00e9e d'un paquet, ce qui lui permet d'obtenir des privil\u00e8ges root sur le syst\u00e8me. L'attaque peut \u00eatre r\u00e9alis\u00e9e, par exemple, par une compromission des miroirs, des serveurs proxy, des points d'acc\u00e8s sans fil ou des passerelles de fournisseurs. Le rapport sur la vuln\u00e9rabilit\u00e9 ne mentionne pas les d\u00e9tails, indiquant simplement que le probl\u00e8me est caus\u00e9 par une mauvaise gestion des liens symboliques. D'apr\u00e8s le patch, o\u00f9 l'ouverture de fichier avec le drapeau FileFd::Empty (O_TRUNC) a \u00e9t\u00e9 remplac\u00e9e par FileFd::Exclusive (O_EXCL), dans le cadre de la reprise d'un t\u00e9l\u00e9chargement interrompu, l'attaquant pouvait r\u00e9ussir \u00e0 \u00e9craser des donn\u00e9es pour lesquelles un hachage avait d\u00e9j\u00e0 \u00e9t\u00e9 effectu\u00e9 lors du premier t\u00e9l\u00e9chargement.
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Source : opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\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 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043e\u0431\u043e\u0439\u0442\u0438 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0443 \u043f\u0440\u0438 \u0437\u0430\u0433\u0440\u0443\u0437\u043a\u0435 \u0444\u0430\u0439\u043b\u043e\u0432 \u0438 \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0441\u0432\u043e\u0435\u0433\u043e \u043a\u043e\u0434\u0430 \u0441 \u043f\u0440\u0430\u0432\u0430\u043c\u0438 root. \u0412\u0441\u0435\u0433\u043e \u0441\u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u043e 13 \u0432\u044b\u043f\u0443\u0441\u043a\u043e\u0432, \u043e\u0445\u0432\u0430\u0442\u044b\u0432\u0430\u044e\u0449\u0438\u0445 \u0432\u0441\u0435 \u0441\u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0435 \u0437\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0438\u0435 10 \u043b\u0435\u0442 \u0432\u0435\u0442\u043a\u0438 APT, \u043d\u0430\u0447\u0438\u043d\u0430\u044f \u0441 1.2.x. \u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u043f\u0430\u043a\u0435\u0442\u043e\u0432 \u0441 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0435\u043c \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0442\u0430\u043a\u0436\u0435 \u0443\u0436\u0435 \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\udd47Une vuln\u00e9rabilit\u00e9 dans le gestionnaire de paquets APT permettant d'ex\u00e9cuter une attaque MITM pour obtenir des droits root | ProHoster","description":"Des mises \u00e0 jour correctives de l'outil de gestion de paquets APT ont 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