{"id":73477,"date":"2020-03-10T02:42:04","date_gmt":"2020-03-09T23:42:04","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-timeshift-pozvolyayushhaya-podnyat-svoi-privilegii-v-sisteme"},"modified":"2020-03-10T02:42:04","modified_gmt":"2020-03-09T23:42:04","slug":"uyazvimost-v-timeshift-pozvolyayushhaya-podnyat-svoi-privilegii-v-sisteme","status":"publish","type":"post","link":"https:\/\/prohoster.info\/fr\/blog\/news\/uyazvimost-v-timeshift-pozvolyayushhaya-podnyat-svoi-privilegii-v-sisteme","title":{"rendered":"Vuln\u00e9rabilit\u00e9 dans Timeshift permettant d'\u00e9lever ses privil\u00e8ges dans le syst\u00e8me","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Dans l'application <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/teejee2008\/timeshift\">Timeshift<\/a><\/noindex> une vuln\u00e9rabilit\u00e9 a \u00e9t\u00e9 identifi\u00e9e <noindex><a rel=\"nofollow\" href=\"https:\/\/www.openwall.com\/lists\/oss-security\/2020\/03\/06\/3\">CVE-2020-10174<\/a><\/noindex> (<noindex><a rel=\"nofollow\" href=\"https:\/\/security-tracker.debian.org\/tracker\/CVE-2020-10174\">), permettant \u00e0 un utilisateur local d'ex\u00e9cuter du code avec des droits root. Timeshift est un syst\u00e8me de sauvegarde utilisant rsync avec des liens durs ou des instantan\u00e9s Btrfs pour offrir une fonctionnalit\u00e9 similaire \u00e0 la Restauration du syst\u00e8me sous Windows et \u00e0 Time Machine sous macOS. Le programme est pr\u00e9sent dans les d\u00e9p\u00f4ts de nombreuses distributions et est utilis\u00e9 par d\u00e9faut dans PCLinuxOS et Linux Mint. La vuln\u00e9rabilit\u00e9 a \u00e9t\u00e9 corrig\u00e9e dans la version<\/a><\/noindex>Timeshift 20.03 <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/teejee2008\/timeshift\/releases\/tag\/v20.03\">Le probl\u00e8me est caus\u00e9 par un traitement incorrect du r\u00e9pertoire public \/tmp. Lors de la cr\u00e9ation d'une sauvegarde, le programme cr\u00e9e le r\u00e9pertoire \/tmp\/timeshift, dans lequel il cr\u00e9e un sous-r\u00e9pertoire avec un nom al\u00e9atoire contenant un script shell avec des commandes, ex\u00e9cut\u00e9 avec des droits root. Le sous-r\u00e9pertoire contenant le script a un nom impr\u00e9visible, mais \/tmp\/timeshift est pr\u00e9visible et n'est pas v\u00e9rifi\u00e9 contre le remplacement ou la cr\u00e9ation d'un lien symbolique \u00e0 la place. Un attaquant peut cr\u00e9er un r\u00e9pertoire \/tmp\/timeshift en son nom, puis suivre l'apparition du sous-r\u00e9pertoire et remplacer ce sous-r\u00e9pertoire et le fichier qui s'y trouve. Pendant l'ex\u00e9cution, Timeshift ex\u00e9cutera avec des droits root un script non g\u00e9n\u00e9r\u00e9 par le programme, mais un fichier remplac\u00e9 par l'attaquant.<\/a><\/noindex>.<\/p>\n<p>Utilisation de variables dans les pipelines Azure DevOps<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Source : <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52509\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0438 Timeshift \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2020-10174), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u043e\u043c\u0443 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044e \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043a\u043e\u0434 \u0441 \u043f\u0440\u0430\u0432\u0430\u043c\u0438 root. Timeshift \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0441\u043e\u0431\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u0443 \u0440\u0435\u0437\u0435\u0440\u0432\u043d\u043e\u0433\u043e \u043a\u043e\u043f\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0449\u0443\u044e rsync \u0441 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u043e\u0439 \u0436\u0451\u0441\u0442\u043a\u0438\u0445 \u0441\u0441\u044b\u043b\u043e\u043a \u0438\u043b\u0438 \u0441\u043d\u0430\u043f\u0448\u043e\u0442\u044b Btrfs \u0434\u043b\u044f \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u0438, \u043f\u043e\u0445\u043e\u0436\u0435\u0439 \u043d\u0430 System Restore \u0432 Windows \u0438 Time Machine \u0432 macOS. \u041f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0430 \u0432\u0445\u043e\u0434\u0438\u0442 \u0432 \u0440\u0435\u043f\u043e\u0437\u0438\u0442\u043e\u0440\u0438\u0438 \u043c\u043d\u043e\u0433\u0438\u0445 \u0434\u0438\u0441\u0442\u0440\u0438\u0431\u0443\u0442\u0438\u0432\u043e\u0432 \u0438 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u0432 PCLinuxOS [&hellip;]<\/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-73477","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0438 Timeshift \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430\" \/>\n\t<meta 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