{"id":167905,"date":"2026-04-08T11:11:59","date_gmt":"2026-04-08T09:11:59","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-vo-flatpak-pozvolyayushhaya-vypolnit-kod-vne-izolirovannogo-okruzheniya"},"modified":"2026-04-08T11:11:59","modified_gmt":"2026-04-08T09:11:59","slug":"uyazvimost-vo-flatpak-pozvolyayushhaya-vypolnit-kod-vne-izolirovannogo-okruzheniya","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/uyazvimost-vo-flatpak-pozvolyayushhaya-vypolnit-kod-vne-izolirovannogo-okruzheniya","title":{"rendered":"S\u00e5rbarhed i Flatpak, som muligg\u00f8r udf\u00f8relse af kode uden for det isolerede milj\u00f8","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>I den just udgivne korrigerende version af selvst\u00e6ndige Flatpak-pakker 1.16.4 samt i den eksperimentelle version 1.17.4 er en s\u00e5rbarhed (CVE-2026-34078) blevet rettet, som tillader ondsindede eller kompromitterede flapk-apps at omg\u00e5 den etablerede sandbox-isolering, f\u00e5 adgang til filer i det prim\u00e6re system og udf\u00f8re vilk\u00e5rlig kode uden for isolationsmodus. Problemet er blevet vurderet som kritisk (9,3 ud af 10).      <\/p>\n<p>S\u00e5rbarheden er til stede i D-Bus-tjenesten flatpak-portal, der muligg\u00f8r opstart af \"portaler\", som anvendes til at organisere adgang til ressourcer i det prim\u00e6re milj\u00f8 fra isolerede applikationer. Problemet skyldes, at flatpak-portal-tjenesten tillader applikationen at angive filstier i sandbox-expose-optionen, som p\u00e5 grund af manglende passende kontroller kan v\u00e6re symboliske links, der peger p\u00e5 vilk\u00e5rlige dele af filsystemet.  <\/p>\n<p>F\u00f8r montering afsl\u00f8rer tjenesten den symboliske link og monterer den sti, som den peger p\u00e5 i sandbox-milj\u00f8et, hvilket muligg\u00f8r at omg\u00e5 isoleringen og f\u00e5 l\u00e6se- og skriveadgang til filer i v\u00e6rtsmilj\u00f8et. For at kunne udf\u00f8re sin kode i systemet kan man f.eks. tilf\u00f8je et autostart-script som \"~\/.bashrc\" eller \"~\/.profile\", eller \u00e6ndre filen \"~\/.ssh\/authorized_keys\" med SSH-n\u00f8gler.      <\/p>\n<p>Status for udbedring af s\u00e5rbarheden i distributionerne kan vurderes p\u00e5 disse sider (hvis siden ikke er tilg\u00e6ngelig, betyder det, at udviklerne af distributionen endnu ikke er begyndt at se p\u00e5 problemet): Debian, Ubuntu, SUSE, RHEL, Gentoo, Arch, Fedora. Som en midlertidig beskyttelse kan tjenesten flatpak-portal deaktiveres: sudo systemctl \u2014global mask flatpak-portal.service &amp;&amp; systemctl \u2014user stop flatpak-portal.service      <\/p>\n<p>Ud over den kritiske s\u00e5rbarhed er tre andre sikkerhedsproblemer blevet l\u00f8st i den nye version:  <\/p>\n<ul>\n<li class=\"l\"> Mulighed for (CVE-2026-34079) at slette vilk\u00e5rlige filer i v\u00e6rtens filsystem. Problemet skyldes, at flatpak ikke kontrollerer den faktiske placering af den slettede fil i cachen under oprydning af for\u00e6ldet ld.so-cache.\n<li class=\"l\"> Mulighed for at l\u00e6se vilk\u00e5rlige filer i system-helper-konteksten p\u00e5 systemer med et konfigureret OCI-billedrepository gennem manipulation med symboliske links.\n<li class=\"l\"> Muligheden for indgriben i behandlingen af anmodninger om at annullere applikationsdownloads, der g\u00f8r det muligt for \u00e9n bruger at forhindre en anden bruger i at stoppe en download.          <\/ul>\n<p>Kilde: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=65170\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u043d\u043e\u043c \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u0447\u0430\u0441\u043e\u0432 \u043d\u0430\u0437\u0430\u0434 \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0435\u043c \u0432\u044b\u043f\u0443\u0441\u043a\u0435 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0441\u0430\u043c\u043e\u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u044b\u0445 \u043f\u0430\u043a\u0435\u0442\u043e\u0432 Flatpak 1.16.4, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0432 \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430\u043b\u044c\u043d\u043e\u043c \u0432\u044b\u043f\u0443\u0441\u043a\u0435 1.17.4, \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2026-34078), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0432\u0440\u0435\u0434\u043e\u043d\u043e\u0441\u043d\u043e\u043c\u0443 \u0438\u043b\u0438 \u0441\u043a\u043e\u043c\u043f\u0440\u043e\u043c\u0435\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u043c\u0443 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044e \u0432 \u0444\u043e\u0440\u043c\u0430\u0442\u0435 flatpak, \u043e\u0431\u043e\u0439\u0442\u0438 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d\u043d\u044b\u0439 \u0440\u0435\u0436\u0438\u043c sandbox-\u0438\u0437\u043e\u043b\u044f\u0446\u0438\u0438, \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u0434\u043e\u0441\u0442\u0443\u043f \u043a \u0444\u0430\u0439\u043b\u0430\u043c \u0432 \u043e\u0441\u043d\u043e\u0432\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u044b\u0439 \u043a\u043e\u0434 \u0432\u043d\u0435 \u0440\u0435\u0436\u0438\u043c\u0430 \u0438\u0437\u043e\u043b\u044f\u0446\u0438\u0438. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0435 \u043f\u0440\u0438\u0441\u0432\u043e\u0435\u043d \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (9.3 \u0438\u0437 10). [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-167905","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u043d\u043e\u043c \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u0447\u0430\u0441\u043e\u0432 \u043d\u0430\u0437\u0430\u0434 \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0435\u043c \u0432\u044b\u043f\u0443\u0441\u043a\u0435 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0441\u0430\u043c\u043e\u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u044b\u0445 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samt i den eksperimentelle version 1.17.4, er der afhjulpet en s\u00e5rbarhed (CVE-2026-34078), der muligg\u00f8r.","canonical_url":"https:\/\/prohoster.info\/da\/blog\/news\/uyazvimost-vo-flatpak-pozvolyayushhaya-vypolnit-kod-vne-izolirovannogo-okruzheniya","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"da_DK","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\u043e Flatpak, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043a\u043e\u0434 \u0432\u043d\u0435 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\u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2026-34078), 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