{"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\/hu\/blog\/news\/uyazvimost-v-timeshift-pozvolyayushhaya-podnyat-svoi-privilegii-v-sisteme","title":{"rendered":"Se vulnerabilities in Timeshift that allow privilege escalation in the system.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Az alkalmaz\u00e1sban Timeshift<\/a><\/noindex> identified vulnerability<\/a><\/noindex> (CVE-2020-10174<\/a><\/noindex>), amely lehet\u0151v\u00e9 teszi a helyi felhaszn\u00e1l\u00f3 sz\u00e1m\u00e1ra, hogy root jogokkal futtasson k\u00f3dot. A Timeshift egy biztons\u00e1gi ment\u00e9si rendszer, amely rsync-et haszn\u00e1l kem\u00e9ny linkek l\u00e9trehoz\u00e1s\u00e1hoz vagy Btrfs pillanatk\u00e9peket alkalmaz, a Windows rendszer-vissza\u00e1ll\u00edt\u00e1shoz \u00e9s a macOS Time Machine-hez hasonl\u00f3 funkcionalit\u00e1s megval\u00f3s\u00edt\u00e1s\u00e1hoz. A program sok disztrib\u00faci\u00f3 t\u00e1rol\u00f3iban el\u00e9rhet\u0151, \u00e9s alap\u00e9rtelmezetten a PCLinuxOS \u00e9s a Linux Mint rendszerekben haszn\u00e1lj\u00e1k. A sebezhet\u0151s\u00e9get a kiad\u00e1sban orvosolt\u00e1k. Timeshift 20.03<\/a><\/noindex>.<\/p>\n

A probl\u00e9ma a megosztott k\u00f6nyvt\u00e1r \/tmp helytelen kezel\u00e9s\u00e9b\u0151l ad\u00f3dik. A biztons\u00e1gi ment\u00e9s l\u00e9trehoz\u00e1sakor a program l\u00e9trehozza a \/tmp\/timeshift k\u00f6nyvt\u00e1rat, amelyben egy v\u00e9letlenszer\u0171 nev\u0171 almappa tal\u00e1lhat\u00f3, amely egy root jogokkal v\u00e9grehajtand\u00f3 shell szkriptet tartalmaz. Az almappa neve kisz\u00e1m\u00edthatatlan, de a \/tmp\/timeshift kisz\u00e1m\u00edthat\u00f3, \u00e9s nem ellen\u0151rzik a helyettes\u00edt\u00e9st vagy a helyette l\u00e9trehozott szimbolikus hivatkoz\u00e1sokat. A t\u00e1mad\u00f3 saj\u00e1t nev\u00e9n l\u00e9trehozhatja a \/tmp\/timeshift k\u00f6nyvt\u00e1rat, majd nyomon k\u00f6vetheti az almappa megjelen\u00e9s\u00e9t, \u00e9s helyettes\u00edtheti azt az almapp\u00e1t \u00e9s a benne l\u00e9v\u0151 f\u00e1jlt. A Timeshift m\u0171k\u00f6d\u00e9se sor\u00e1n root jogokkal nem a program \u00e1ltal gener\u00e1lt szkriptet, hanem a t\u00e1mad\u00f3 \u00e1ltal helyettes\u00edtett f\u00e1jlt fog v\u00e9grehajtani.<\/p>\n

<\/a><\/noindex><\/p>\n

Forr\u00e1s: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\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 […]<\/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\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\udd47A Timeshift sebezhet\u0151s\u00e9ge, amely lehet\u0151v\u00e9 teszi az el\u0151jogok 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