{"id":138218,"date":"2025-06-25T17:11:58","date_gmt":"2025-06-25T15:11:58","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimosti-v-paketnyh-menedzherah-nix-lix-i-guix"},"modified":"2025-06-25T17:11:58","modified_gmt":"2025-06-25T15:11:58","slug":"uyazvimosti-v-paketnyh-menedzherah-nix-lix-i-guix","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/uyazvimosti-v-paketnyh-menedzherah-nix-lix-i-guix","title":{"rendered":"\u00daj sebezhet\u0151s\u00e9gek a Nix, Lix \u00e9s Guix csomagkezel\u0151kben","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

A GNU Guix, Nix \u00e9s Lix csomagkezel\u0151kben a felhaszn\u00e1l\u00f3k \u00e1ltal futtatott build feladatok jogainak kihaszn\u00e1l\u00e1s\u00e1ra alkalmas sebezhet\u0151s\u00e9gek (Nix, Guix, Lix) ker\u00fcltek \u00e9szlel\u00e9sre, amelyek lehet\u0151v\u00e9 teszik saj\u00e1t adatok \u00edr\u00e1s\u00e1t a build k\u00f6rnyezetbe \u00e9s a build folyamat m\u00f3dos\u00edt\u00e1s\u00e1t. A probl\u00e9m\u00e1k a guix-daemon \u00e9s a nix-daemon h\u00e1tt\u00e9rfolyamataiban tal\u00e1lhat\u00f3k, amelyek a nem-adminisztr\u00e1tori felhaszn\u00e1l\u00f3k hozz\u00e1f\u00e9r\u00e9s\u00e9nek szervez\u00e9s\u00e9re szolg\u00e1lnak a build m\u0171veletekhez. <\/p>\n

A sebezhet\u0151s\u00e9gek az\u00e9rt alakultak ki, mert bizonyos m\u0171veletek v\u00e9grehajt\u00e1sakor a tempor\u00e1lis assembly k\u00f6nyvt\u00e1rakhoz val\u00f3 hozz\u00e1f\u00e9r\u00e9shez nem dirfd deszkiptort haszn\u00e1ltak, hanem teljes f\u00e1jl\u00fatvonalakat, ami lehet\u0151v\u00e9 tette az assembly k\u00f6nyvt\u00e1r cser\u00e9j\u00e9t, amely a \"\/tmp\" hierarchi\u00e1ban helyezkedett el (p\u00e9ld\u00e1ul \"\tmpuild-PACKAGE-X.Y.drv-0\"). A dirfd helytelen haszn\u00e1lata a rekurz\u00edv t\u00f6rl\u00e9s funkci\u00f3j\u00e1ban versenyhelyzetet okozott, ami lehet\u0151v\u00e9 tette a t\u00e1mad\u00f3 sz\u00e1m\u00e1ra, hogy szimbolikus hivatkoz\u00e1st illesszen be a k\u00f6nyvt\u00e1r l\u00e9trehoz\u00e1sa \u00e9s a tulajdonjog m\u00f3dos\u00edt\u00e1sa k\u00f6z\u00f6tti id\u0151szakban. Sikeres t\u00e1mad\u00e1s eset\u00e9n a guix-daemon\/nix-daemon nem a k\u00f6nyvt\u00e1r haszn\u00e1l\u00f3j\u00e1nak \u00e1t\u00e1ll\u00edt\u00e1s\u00e1t v\u00e9gezte, hanem a szimbolikus hivatkoz\u00e1sra mutat\u00f3 f\u00e1jl tulajdonos\u00e1t v\u00e1ltoztatta meg. <\/p>\n

A sebezhet\u0151s\u00e9gek a Lix 2.93, Nix 2.29 \u00e9s Guix 1.4.0-38.0e79d5b friss\u00edt\u00e9seiben lettek elh\u00e1r\u00edtva. A sebezhet\u0151s\u00e9gek kihaszn\u00e1l\u00e1s\u00e1hoz a t\u00e1mad\u00f3nak lehet\u0151s\u00e9ge kell, hogy legyen tetsz\u0151leges build feladatok futtat\u00e1s\u00e1ra. A CVE-2025-46415 sebezhet\u0151s\u00e9g kihaszn\u00e1l\u00e1s\u00e1hoz elegend\u0151, ha a t\u00e1mad\u00f3 a \/tmp k\u00f6nyvt\u00e1rban f\u00e1jlokat hozhat l\u00e9tre a build g\u00e9pen, m\u00edg a CVE-2025-46416 sebezhet\u0151s\u00e9ghez a k\u00f3dfuttat\u00e1s lehet\u0151s\u00e9ge sz\u00fcks\u00e9ges a felhaszn\u00e1l\u00f3i azonos\u00edt\u00f3k (pid namespace) \u00e9s a h\u00e1l\u00f3zat (network namespace) f\u0151 n\u00e9vter\u00e9n bel\u00fcl.
\n
Forr\u00e1s: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u043f\u0430\u043a\u0435\u0442\u043d\u044b\u0445 \u043c\u0435\u043d\u0435\u0434\u0436\u0435\u0440\u0430\u0445 GNU Guix, Nix \u0438 Lix \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u044b \u0443\u044f\u0437\u0432\u0438\u043c\u0438\u043e\u0441\u0442\u0438 (Nix, Guix, Lix), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0435 \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043a\u043e\u0434 \u0441 \u043f\u0440\u0430\u0432\u0430\u043c\u0438 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439, \u043f\u043e\u0434 \u043a\u043e\u0442\u043e\u0440\u044b\u043c\u0438 \u0437\u0430\u043f\u0443\u0441\u043a\u0430\u044e\u0442\u0441\u044f \u0441\u0431\u043e\u0440\u043e\u0447\u043d\u044b\u0435 \u0437\u0430\u0434\u0430\u043d\u0438\u044f (\u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, nixbld* \u0432 Nix\/Lix), \u0447\u0442\u043e \u043c\u043e\u0436\u0435\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f 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[…]<\/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-138218","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\udd47Sebezhet\u0151s\u00e9gek a Nix, Lix \u00e9s Guix csomagkezel\u0151kben | ProHoster","description":"A GNU Guix, Nix \u00e9s Lix csomagkezel\u0151kben lehet\u0151s\u00e9g van a felhaszn\u00e1l\u00f3k jogait kihaszn\u00e1lva k\u00f3d futtat\u00e1s\u00e1ra, amelyek a build feladatok jogai alatt m\u0171k\u00f6dnek (p\u00e9ld\u00e1ul nixbld* a Nix\/Lix-ben), ami potenci\u00e1lisan lehet\u0151s\u00e9get 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