{"id":120285,"date":"2024-10-25T13:09:16","date_gmt":"2024-10-25T11:09:16","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-networkmanager-libreswan-i-guix-daemon-pozvolyayushhie-povysit-privilegii-v-sisteme"},"modified":"2024-10-25T13:09:16","modified_gmt":"2024-10-25T11:09:16","slug":"uyazvimost-v-networkmanager-libreswan-i-guix-daemon-pozvolyayushhie-povysit-privilegii-v-sisteme","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/uyazvimost-v-networkmanager-libreswan-i-guix-daemon-pozvolyayushhie-povysit-privilegii-v-sisteme","title":{"rendered":"S\u00e5rbarhed i NetworkManager-libreswan og guix-daemon, der muligg\u00f8r forh\u00f8jelse af privilegier i systemet","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

I plugin NetworkManager-libreswan, der tilf\u00f8jer funktionalitet til NetworkManager for at oprette forbindelse til VPN\u2019er, der er kompatible med servere baseret p\u00e5 Libreswan og Cisco IPsec, er en s\u00e5rbarhed (CVE-2024-9050) blevet opdaget, som kan udnyttes af lokale brugere til at opn\u00e5 forh\u00f8jede rettigheder. S\u00e5rbarheden er blevet rettet i opdateringen NetworkManager-libreswan 1.2.24. Du kan f\u00f8lge med i opdateringer i distributionerne p\u00e5 f\u00f8lgende sider: Debian, Ubuntu, RHEL, SUSE\/openSUSE, Fedora. <\/p>\n

Problemet skyldes en ukorrekt kontrol af konfigurationen, VPN<\/a>, defineret af en lokal ikke-privilegeret bruger og sendt direkte til Libreswan, n\u00e5r der fors\u00f8ges at aktivere forbindelsen. Is\u00e6r blev der ikke udf\u00f8rt kontrol af brugen af escape-tegn, s\u00e5som linjeskift «\n», som kunne anvendes til at adskille individuelle indstillinger angivet i \u00e9n linje. <\/p>\n

Angriberen kunne s\u00e5ledes angive en af de tilladte parametre, parameteret «leftupdown», som er forbudt for ikke-privilegerede brugere, og som angiver et script, der k\u00f8res med root-rettigheder under oprettelsen af forbindelsen. For eksempel, for at starte programmet \/bin\/true kan de f\u00f8lgende indstillinger knyttes til den tilladte parameter «hostaddrfamily»: hostaddrfamily=ipv4\n leftupdown=\/-bin\/-true\n ikev2=never\n leftxauthclient=yes\n leftusername=username\n phase2alg=aes256-sha1\n authby=secret\n left=faultroute\n leftmodecfgclient=yes\n right=172.31.79.2\nconn ign <\/p>\n

Endnu en s\u00e5rbarhed er blevet opdaget i baggrundsprocessen guix-daemon, der anvendes i distributioner baseret p\u00e5 paketmanageren GNU Guix. S\u00e5rbarheden udg\u00f8r en risiko for flerbruger-systemer og tillader en lokal bruger at opn\u00e5 rettigheder som enhver bruger, der udf\u00f8rer pakkeopbygning (build user), og \u00e6ndre resultaterne af opbygningen. Essensen af s\u00e5rbarheden er, at en angriber kan starte en afledt opbygning, og hvis opbygningsprocessen bliver afbrudt, vil de allerede oprettede suid-filer forblive tilg\u00e6ngelige for andre brugere af systemet. Derefter kan angriberen udnytte den oprettede suid-fil til at stoppe opbygningsprocessen, \u00e5bne enhver fil via \\\/proc\\\/$PID\\\/fd med rettighederne fra den bruger, der udf\u00f8rer opbygningen, og overskrive filerne med resultaterne af opbygningen).
\n
Kilde: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u043f\u043b\u0430\u0433\u0438\u043d\u0435 NetworkManager-libreswan, \u0434\u043e\u0431\u0430\u0432\u043b\u044f\u044e\u0449\u0435\u043c \u0432 NetworkManager \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u0434\u043b\u044f \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u043a VPN, \u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c\u044b\u043c \u0441 \u0441\u0435\u0440\u0432\u0435\u0440\u0430\u043c\u0438 \u043d\u0430 \u0431\u0430\u0437\u0435 Libreswan \u0438 Cisco IPsec, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2024-9050), \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043c\u043e\u0436\u0435\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u0434\u043b\u044f \u043f\u043e\u0432\u044b\u0448\u0435\u043d\u0438\u044f \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u044b\u043c \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u043c \u0441\u0432\u043e\u0438\u0445 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0439. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0432 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0438 NetworkManager-libreswan 1.2.24. \u041f\u0440\u043e\u0441\u043b\u0435\u0434\u0438\u0442\u044c \u0437\u0430 \u043f\u043e\u044f\u0432\u043b\u0435\u043d\u0438\u0435\u043c \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0439 \u0432 \u0434\u0438\u0441\u0442\u0440\u0438\u0431\u0443\u0442\u0438\u0432\u0430\u0445 \u043c\u043e\u0436\u043d\u043e \u043d\u0430 \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0438\u0445 \u0441\u0442\u0440\u0430\u043d\u0438\u0446\u0430\u0445: Debian, Ubuntu, RHEL, SUSE\/openSUSE, Fedora. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0432\u044b\u0437\u0432\u0430\u043d\u0430 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-120285","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\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47S\u00e5rbarhed i NetworkManager-libreswan og guix-daemon, der muligg\u00f8r retten til at \u00f8ge privilegierne i systemet | ProHoster","description":"I plugin NetworkManager-libreswan, der tilf\u00f8jer funktionalitet til NetworkManager for at tilslutte til VPN'er, der er kompatible med servere baseret p\u00e5 Libreswan og Cisco IPsec, er der opdaget en s\u00e5rbarhed (CVE-2024-9050), som 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\u0441\u0438\u0441\u0442\u0435\u043c\u0435 | ProHoster","og:description":"\u0412 \u043f\u043b\u0430\u0433\u0438\u043d\u0435 NetworkManager-libreswan, \u0434\u043e\u0431\u0430\u0432\u043b\u044f\u044e\u0449\u0435\u043c \u0432 NetworkManager \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u0434\u043b\u044f \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u043a VPN, \u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c\u044b\u043c \u0441 \u0441\u0435\u0440\u0432\u0435\u0440\u0430\u043c\u0438 \u043d\u0430 \u0431\u0430\u0437\u0435 Libreswan \u0438 Cisco IPsec, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2024-9050), \u043a\u043e\u0442\u043e\u0440\u0430\u044f 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