{"id":92546,"date":"2020-08-28T07:42:57","date_gmt":"2020-08-28T05:42:57","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-openzfs-narushayushhaya-obrabotku-prav-dostupa-vo-freebsd"},"modified":"2020-08-28T07:42:57","modified_gmt":"2020-08-28T05:42:57","slug":"uyazvimost-v-openzfs-narushayushhaya-obrabotku-prav-dostupa-vo-freebsd","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/uyazvimost-v-openzfs-narushayushhaya-obrabotku-prav-dostupa-vo-freebsd","title":{"rendered":"Az OpenZFS-ben l\u00e9v\u0151 sebezhet\u0151s\u00e9g, amely megs\u00e9rti a hozz\u00e1f\u00e9r\u00e9si jogok kezel\u00e9s\u00e9t a FreeBSD-n","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

A hozz\u00e1adott<\/a><\/noindex> be. OpenZFS.<\/a><\/noindex> k\u00f3d a FreeBSD oper\u00e1ci\u00f3s rendszer t\u00e1mogat\u00e1s\u00e1hoz kritikus hib\u00e1t t\u00e1rt fel vulnerability<\/a><\/noindex> (CVE-2020-24717<\/a><\/noindex>), amely a hozz\u00e1f\u00e9r\u00e9si jogok kezel\u00e9s\u00e9nek megs\u00e9rt\u00e9s\u00e9hez vezet. A probl\u00e9ma l\u00e9nyege, hogy a csoport sz\u00e1m\u00e1ra be\u00e1ll\u00edtott jogok a f\u00e1jl tulajdonos\u00e1nak jogak\u00e9nt voltak kezelve. A probl\u00e9ma eliminates<\/a><\/noindex> a friss\u00edt\u00e9sben OpenZFS 2.0.0-rc1<\/a><\/noindex>. A jav\u00edt\u00e1s be lett vezetve<\/a><\/noindex> t\u00f3l a<\/a><\/noindex> FreeBSD HEAD k\u00f3dalap OpenZFS-re val\u00f3 \u00e1tt\u00e9r\u00e9s\u00e9vel.<\/p>\n

A probl\u00e9m\u00e1t az okozta, hogy minden hozz\u00e1f\u00e9r\u00e9si vez\u00e9rl\u0151lista (ACE), amelyet a csoport tulajdonos\u00e1nak (group@) \u00e9s a norm\u00e1l csoportoknak (group:) \u00e1ll\u00edtottak be, \u00e1tad\u00e1sra ker\u00fclt a jelenlegi felhaszn\u00e1l\u00f3nak.
\nP\u00e9ld\u00e1ul a 0770 hozz\u00e1f\u00e9r\u00e9si m\u00f3d (\u00edr\u00e1s csak a csoport tagjainak enged\u00e9lyezett) 0777-k\u00e9nt (\u00edr\u00e1s mindenkinek enged\u00e9lyezett) lett kezelve. Hasonl\u00f3 helyzet figyelhet\u0151 meg az ACL eset\u00e9ben, p\u00e9ld\u00e1ul az al\u00e1bbi ACL 0777 jogoknak felelt meg, mivel a be\u00e9p\u00edtett_administrators csoporthoz val\u00f3 ellen\u0151rz\u00e9s True-t adott vissza.<\/p>\n

# owner: root
\n # group: wheel
\n csoport:builtin_administrators:rwxpDdaARWcCos:----:enged\u00e9lyez\u00e9s<\/p>\n

Az OpenZFS FreeBSD portj\u00e1ban egy m\u00e1sik probl\u00e9m\u00e1t is felfedeztek, amely a k\u00f6nyvt\u00e1rba val\u00f3 bel\u00e9p\u00e9si jogok (cd) biztos\u00edt\u00e1s\u00e1hoz kapcsol\u00f3dik, f\u00fcggetlen\u00fcl a k\u00f6nyvt\u00e1rak v\u00e9grehajt\u00e1si jog\u00e1nak \u00e1llapot\u00e1t\u00f3l. A k\u00f6nyvt\u00e1rba val\u00f3 bel\u00e9p\u00e9s lehet\u0151v\u00e9 v\u00e1lt, m\u00e9g az ACL (\u00bbtagad\u00e1s - v\u00e9grehajt\u00e1s\u00ab) kifejezett tilt\u00e1sa eset\u00e9n is. <\/p>\n

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

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

\u0412 \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u043d\u043e\u043c \u0432 OpenZFS \u043a\u043e\u0434\u0435 \u0434\u043b\u044f \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438 \u041e\u0421 FreeBSD \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2020-24717), \u043f\u0440\u0438\u0432\u043e\u0434\u044f\u0449\u0430\u044f \u043a \u043d\u0430\u0440\u0443\u0448\u0435\u043d\u0438\u044e \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043f\u0440\u0430\u0432 \u0434\u043e\u0441\u0442\u0443\u043f\u0430. \u0421\u0443\u0442\u044c \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u044b \u0432 \u0442\u043e\u043c, \u0447\u0442\u043e \u043f\u0440\u0430\u0432\u0430, \u0443\u0441\u0442\u0430\u043d\u0430\u0432\u043b\u0438\u0432\u0430\u0435\u043c\u044b\u0435 \u0434\u043b\u044f \u0433\u0440\u0443\u043f\u043f\u044b, \u043e\u0431\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u043b\u0438\u0441\u044c \u043a\u0430\u043a \u043f\u0440\u0430\u0432\u0430 \u0434\u043b\u044f \u0432\u043b\u0430\u0434\u0435\u043b\u044c\u0446\u0430 \u0444\u0430\u0439\u043b\u0430. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0432 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0438 OpenZFS 2.0.0-rc1. \u0418\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u0432\u043d\u0435\u0441\u0435\u043d\u043e \u0434\u043e \u043f\u0435\u0440\u0435\u0432\u043e\u0434\u0430 \u043a\u043e\u0434\u043e\u0432\u043e\u0439 \u0431\u0430\u0437\u044b FreeBSD HEAD \u043d\u0430 OpenZFS. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0431\u044b\u043b\u0430 \u0432\u044b\u0437\u0432\u0430\u043d\u0430 \u0442\u0435\u043c, \u0447\u0442\u043e […]<\/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-92546","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\udd47Az OpenZFS-ben l\u00e9v\u0151 sebezhet\u0151s\u00e9g, amely megs\u00e9rti a hozz\u00e1f\u00e9r\u00e9si jogok kezel\u00e9s\u00e9t a FreeBSD-n | ProHoster","description":"A hozz\u00e1adott OpenZFS 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