{"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\/cs\/blog\/news\/apt-package-manager-vulnerability-allows-attackers-to-gain-root-privileges-via-mitm-attacks","title":{"rendered":"Zranitelnost v bal\u00ed\u010dkov\u00e9m mana\u017eeru APT umo\u017e\u0148uj\u00edc\u00ed prov\u00e9st MITM \u00fatok pro z\u00edsk\u00e1n\u00ed pr\u00e1v root.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Byly vyd\u00e1ny opravy n\u00e1stroj\u016f pro spr\u00e1vu bal\u00ed\u010dk\u016f APT, kter\u00e9 odstranily zranitelnost (CVE-2026-109518), je\u017e umo\u017e\u0148uje obej\u00edt kontrolu p\u0159i stahov\u00e1n\u00ed soubor\u016f a dos\u00e1hnout vykon\u00e1n\u00ed vlastn\u00edho k\u00f3du s pr\u00e1vy roota. Celkem bylo vytvo\u0159eno 13 verz\u00ed pokr\u00fdvaj\u00edc\u00edch v\u0161echny verze APT vytvo\u0159en\u00e9 za posledn\u00edch 10 let, po\u010d\u00ednaje 1.2.x. Aktualizace bal\u00ed\u010dk\u016f s opravou zranitelnosti byly tak\u00e9 ji\u017e p\u0159ipraveny pro r\u016fzn\u00e9 verze Debian, Ubuntu a Deepin. V defaultn\u00edm nastaven\u00ed probl\u00e9m postihuje v\u0161echny verze po\u010d\u00ednaje Debianem 12 a Ubuntu 22.04. Vyu\u017eit\u00ed star\u0161\u00edch verz\u00ed je mo\u017en\u00e9 v p\u0159\u00edpad\u011b nastaven\u00ed parametru Acquire::Retries na hodnotu v\u011bt\u0161\u00ed ne\u017e 0.<\/p>\n

\u00dato\u010dn\u00edk, kter\u00fd se b\u011bhem instalace bal\u00ed\u010dku dok\u00e1\u017ee vm\u011b\u0161ovat do HTTP provozu mezi u\u017eivatelsk\u00fdm za\u0159\u00edzen\u00edm a repozit\u00e1\u0159em bal\u00ed\u010dk\u016f, m\u016f\u017ee dos\u00e1hnout instalace podvr\u017een\u00e9 nepotvrzen\u00e9 verze bal\u00ed\u010dku, co\u017e mu umo\u017en\u00ed z\u00edskat privilegium roota v syst\u00e9mu. \u00datok m\u016f\u017ee b\u00fdt proveden nap\u0159\u00edklad prost\u0159ednictv\u00edm kompromitace zrcadel, proxy server\u016f, bezdr\u00e1tov\u00fdch p\u0159\u00edstupov\u00fdch bod\u016f nebo br\u00e1n poskytovatele. V zpr\u00e1v\u011b o zranitelnosti nejsou uvedeny podrobnosti, pouze bylo zm\u00edn\u011bno, \u017ee probl\u00e9m je zp\u016fsoben nespr\u00e1vn\u00fdm zach\u00e1zen\u00edm s tvrd\u00fdmi odkazy. Podle opravy, ve kter\u00e9 bylo otev\u0159en\u00ed souboru s flagem FileFd::Empty (O_TRUNC) nahrazeno FileFd::Exclusive (O_EXCL), mohl \u00fato\u010dn\u00edk p\u0159i obnoven\u00ed p\u0159eru\u0161en\u00e9ho stahov\u00e1n\u00ed dos\u00e1hnout p\u0159eps\u00e1n\u00ed dat, pro kter\u00e1 bylo p\u0159i prvn\u00edm sta\u017een\u00ed ji\u017e provedeno hashov\u00e1n\u00ed.
\n
Zdroj: 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\udd47 Zranitelnost v mana\u017eeru bal\u00ed\u010dk\u016f APT, kter\u00e1 umo\u017e\u0148uje prov\u00e9st MITM \u00fatok pro z\u00edsk\u00e1n\u00ed pr\u00e1v roota | ProHoster","description":"Byly vyd\u00e1ny opravy n\u00e1stroj\u016f pro spr\u00e1vu bal\u00ed\u010dk\u016f APT, kter\u00e9 odstranily zranitelnost (CVE-2026-109518), je\u017e umo\u017e\u0148uje obej\u00edt kontrolu p\u0159i stahov\u00e1n\u00ed soubor\u016f a dos\u00e1hnout vykon\u00e1n\u00ed vlastn\u00edho.","canonical_url":"https:\/\/prohoster.info\/cs\/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":"cs_CZ","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 \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.","og:url":"https:\/\/prohoster.info\/cs\/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\/cs\/wp-json\/wp\/v2\/posts\/184170","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/comments?post=184170"}],"version-history":[{"count":1,"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/posts\/184170\/revisions"}],"predecessor-version":[{"id":184171,"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/posts\/184170\/revisions\/184171"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/media?parent=184170"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/categories?post=184170"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/cs\/wp-json\/wp\/v2\/tags?post=184170"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}