{"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\/hr\/blog\/news\/uyazvimost-v-networkmanager-libreswan-i-guix-daemon-pozvolyayushhie-povysit-privilegii-v-sisteme","title":{"rendered":"Vulnerabilnost u NetworkManager-libreswan i guix-daemon, koja omogu\u0107ava eskalaciju privilegija u sustavu","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

U dodatku NetworkManager-libreswan, koji dodaje funkcionalnosti za povezivanje na VPN u NetworkManager, kompatibilne s poslu\u017eiteljima temeljenim na Libreswanu i Cisco IPsec, otkrivena je ranjivost (CVE-2024-9050) koja se mo\u017ee iskoristiti za pove\u0107anje privilegija lokalnog korisnika. Ranjivost je ispravljena u a\u017euriranju NetworkManager-libreswan 1.2.24. Pra\u0107enje pojavljivanja a\u017euriranja u distribucijama mo\u017ee se obaviti na sljede\u0107im stranicama: Debian, Ubuntu, RHEL, SUSE\/openSUSE, Fedora. <\/p>\n

Problem je uzrokovan nepravilnom provjerom konfiguracije VPN<\/a>, odre\u0111ene lokalnim neprivilegiranim korisnikom i proslije\u0111ene izravno u Libreswan prilikom poku\u0161aja aktivacije veze. Konkretno, u dodatku se nije provjeravalo kori\u0161tenje escape-znakova, poput znaka novog reda «\n», koji su se mogli koristiti za razdvajanje pojedina\u010dnih postavki navedenih u jednom retku. <\/p>\n

Shodno tome, napada\u010d je mogao navesti jedan od dopu\u0161tenih parametara kao parametar «leftupdown», koji je zabranjen za neprivilegirane korisnike i pokre\u0107e skriptu koja se izvr\u0161ava s pravima root tijekom uspostavljanja veze. Na primjer, za pokretanje programa \/bin\/true uz dopu\u0161teni parametar «hostaddrfamily» mogu\u0107e je dodati sljede\u0107e postavke: 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

Jo\u0161 jedna ranjivost otkrivena je u pozadinskom procesu guix-daemon, koji se koristi u distribucijama temeljenim na upravitelju paketa GNU Guix. Ranjivost predstavlja opasnost za vi\u0161ekorisni\u010dke sustave i omogu\u0107uje lokalnom korisniku stjecanje privilegija bilo kojeg korisnika koji izvr\u0161ava gradnju paketa (build user) i unos promjena u rezultat gradnje. Su\u0161tina ranjivosti je u tome \u0161to napada\u010d mo\u017ee pokrenuti izvedenu gradnju, a ako se proces gradnje prekine, ve\u0107 stvoreni suid-datoteke ostat \u0107e dostupne ostalim korisnicima sustava. Nakon toga napada\u010d mo\u017ee iskoristiti stvorenu suid-datoteku za obustavu gradnje, otvoriti bilo koju datoteku putem \/proc\/$PID\/fd s pravima korisnika koji izvr\u0161ava gradnju i prepisati datoteke s rezultatima gradnje.
\n
Izvor: 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\udd47Ranjivost u NetworkManager-libreswan i guix-daemon koja omogu\u0107ava pove\u0107anje privilegija u sustavu | ProHoster","description":"U dodatku NetworkManager-libreswan, koji dodaje funkcionalnost za povezivanje na VPN u NetworkManager koja je kompatibilna s poslu\u017eiteljima zasnovanim na Libreswan i Cisco IPsec, otkrivena je ranjivost (CVE-2024-9050) koja 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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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