{"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\/sk\/blog\/news\/apt-package-manager-vulnerability-allows-attackers-to-gain-root-privileges-via-mitm-attacks","title":{"rendered":"Zranite\u013enos\u0165 v bal\u00edkovom mana\u017e\u00e9ri APT, ktor\u00e1 umo\u017e\u0148uje vykona\u0165 MITM \u00fatok na z\u00edskanie pr\u00e1v administr\u00e1tora.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Boli vydan\u00e9 opravy n\u00e1strojov na spr\u00e1vu bal\u00edkov APT, ktor\u00e9 odstra\u0148uj\u00fa zranite\u013enos\u0165 (CVE-2026-109518), umo\u017e\u0148uj\u00facu ob\u00eds\u0165 kontrolu pri s\u0165ahovan\u00ed s\u00faborov a dosiahnu\u0165 vykonanie vlastn\u00e9ho k\u00f3du s pr\u00e1vami roota. Celkovo bolo vytvoren\u00fdch 13 vydan\u00ed, pokr\u00fdvaj\u00facich v\u0161etky vetvy APT vytvoren\u00e9 za posledn\u00fdch 10 rokov, po\u010dn\u00fac od verzie 1.2.x. Aktualiz\u00e1cie bal\u00edkov s opravou zranite\u013enosti boli tie\u017e u\u017e vytvoren\u00e9 pre r\u00f4zne verzie Debian, Ubuntu a Deepin. V predvolenom nastaven\u00ed t\u00e1to probl\u00e9m ovplyv\u0148uje v\u0161etky vydania od Debian 12 a Ubuntu 22.04. Vyu\u017eitie star\u0161\u00edch verzi\u00ed je mo\u017en\u00e9 v pr\u00edpade, \u017ee sa parameter Acquire::Retries nastav\u00ed na hodnotu vy\u0161\u0161iu ako 0.<\/p>\n

\u00dato\u010dn\u00edk, schopn\u00fd po\u010das in\u0161tal\u00e1cie bal\u00edka zasiahnu\u0165 do HTTP prev\u00e1dzky medzi pou\u017e\u00edvate\u013eom a repozit\u00e1rom bal\u00edkov, m\u00f4\u017ee dosiahnu\u0165 in\u0161tal\u00e1ciu podvrhnut\u00e9ho neoveren\u00e9ho variantu bal\u00edka, \u010do mu umo\u017e\u0148uje z\u00edska\u0165 privilegovan\u00e9 pr\u00e1va roota v syst\u00e9me. \u00datok m\u00f4\u017ee by\u0165 vykonan\u00fd napr\u00edklad cez kompromitovan\u00e9 zrkadl\u00e1, proxy servery, bezdr\u00f4tov\u00e9 pr\u00edstupov\u00e9 body alebo provid\u00e9rske br\u00e1ny. V spr\u00e1ve o zranite\u013enosti nie s\u00fa podrobnosti uveden\u00e9, uveden\u00e9 je len to, \u017ee probl\u00e9m je sp\u00f4soben\u00fd nespr\u00e1vnou pr\u00e1cou s tvrd\u00fdmi odkazmi. S\u00fadaj\u00fac pod\u013ea patchu, v ktorom sa otvorenie s\u00faboru s pr\u00edznakom FileFd::Empty (O_TRUNC) nahr\u00e1dza na FileFd::Exclusive (O_EXCL), pri obnoven\u00ed preru\u0161en\u00e9ho s\u0165ahovania by \u00fato\u010dn\u00edk mohol dosiahnu\u0165 prep\u00edsanie d\u00e1t, pre ktor\u00e9 bolo po\u010das prv\u00e9ho s\u0165ahovania u\u017e vykonan\u00e9 hashovanie.
\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 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\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 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