{"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\/sv\/blog\/news\/apt-package-manager-vulnerability-allows-attackers-to-gain-root-privileges-via-mitm-attacks","title":{"rendered":"S\u00e5rbarhet i paketchefen APT som m\u00f6jligg\u00f6r en MITM-attack f\u00f6r att erh\u00e5lla root-\u00e5tkomst","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Korrigerande utg\u00e5vor av APT-pakethanteringsverktyget har publicerats, d\u00e4r en s\u00e5rbarhet (CVE-2026-109518) har \u00e5tg\u00e4rdats. Denna s\u00e5rbarhet m\u00f6jligg\u00f6r en omg\u00e5else av kontrollen vid filnedladdningar och kan leda till att angriparen f\u00e5r exekvering av egen kod med root-beh\u00f6righet. Totalt har 13 utg\u00e5vor skapats som omfattar alla grenar av APT som har skapats under de senaste 10 \u00e5ren, fr\u00e5n version 1.2.x. Uppdateringar med \u00e5tg\u00e4rder f\u00f6r s\u00e5rbarheten har ocks\u00e5 redan skapats f\u00f6r olika versioner av Debian, Ubuntu och Deepin. I standardkonfigurationen p\u00e5verkar problemet alla utg\u00e5vor fr\u00e5n och med Debian 12 och Ubuntu 22.04. Utnyttjande av \u00e4ldre versioner \u00e4r m\u00f6jligt om parametern Acquire::Retries s\u00e4tts till ett v\u00e4rde st\u00f6rre \u00e4n 0.<\/p>\n

En angripare som kan infiltrera HTTP-trafiken mellan anv\u00e4ndaren och paketrepositoriet under installation av ett paket kan tvinga fram installation av en manipulerad, oidentifierad version av paketet, vilket ger denne root-beh\u00f6righeter i systemet. Attacken kan exempelvis genomf\u00f6ras genom att kompromettera speglar, proxyservrar, tr\u00e5dl\u00f6sa \u00e5tkomstpunkter eller ISP-gateways. I s\u00e5rbarhetsrapporten n\u00e4mns inga detaljer, det anges bara att problemet orsakas av felaktig hantering av h\u00e5rda l\u00e4nkar. Enligt patchen, d\u00e4r fil\u00f6ppningen med flaggan FileFd::Empty (O_TRUNC) har ersatts med FileFd::Exclusive (O_EXCL), kunde en angripare vid \u00e5terupptagning av en avbruten nedladdning \u00e5stadkomma \u00f6verskrivning av data som redan hade hashats vid den f\u00f6rsta nedladdningen.
\n
K\u00e4lla: 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\udd47S\u00e5rbarhet i APT-pakethanteraren som m\u00f6jligg\u00f6r MITM-attacker f\u00f6r att erh\u00e5lla root-beh\u00f6righeter | ProHoster","description":"Korrigerande utg\u00e5vor av APT-pakethanteringsverktyget har publicerats, d\u00e4r en s\u00e5rbarhet (CVE-2026-109518) har \u00e5tg\u00e4rdats. 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