{"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\/et\/blog\/news\/uyazvimost-v-openzfs-narushayushhaya-obrabotku-prav-dostupa-vo-freebsd","title":{"rendered":"OpenZFS-i haavatavus, mis rikub juurdep\u00e4\u00e4su\u00f5iguste t\u00f6\u00f6tlemist FreeBSD-s","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Uues lisatud<\/a><\/noindex> ja OpenZFS<\/a><\/noindex> koodis FreeBSD operatsioonis\u00fcsteemi toetamiseks tuvastati kriitiline haavatavus<\/a><\/noindex> (CVE-2020-24717<\/a><\/noindex>), mis p\u00f5hjustab ligip\u00e4\u00e4su\u00f5iguste t\u00f6\u00f6tlemise rikkumist. Probleemi olemus seisneb selles, et grupile seatud \u00f5igusi t\u00f6\u00f6deldi nagu failihalduri \u00f5igusi. Probleem on k\u00f5rvaldatud<\/a><\/noindex> uuenduses OpenZFS 2.0.0-rc1<\/a><\/noindex>. Parandus on lisatud<\/a><\/noindex> kuni \u00fcleminekut<\/a><\/noindex> FreeBSD HEAD koodibaasis OpenZFS-ile.<\/p>\n

Probleem tekkis seet\u00f5ttu, et k\u00f5ik ligip\u00e4\u00e4suhaldusnimekirja (ACE) elemendid, mis on m\u00e4\u00e4ratud grupi omaniku (group@) ja tavagruppide (group:) jaoks, delegeeriti praegusele kasutajale.
\nN\u00e4iteks ligip\u00e4\u00e4sure\u017eiim 0770 (kirjutamine lubatud ainult grupi liikmetele) t\u00f6\u00f6teldi nagu 0777 (kirjutamine lubatud k\u00f5igile kasutajatele). Sarnane olukord t\u00e4heldati ACL-idega, n\u00e4iteks allpool toodud ACL muutus v\u00f5rduseks \u00f5igustega 0777, kuna grupi liikme kontroll builtin_administrators tagastab True.<\/p>\n

# owner: root
\n # group: wheel
\n group:builtin_administrators:rwxpDdaARWcCos:\u2014\u2014-:allow<\/p>\n

FreeBSD OpenZFS sadamal avastati veel \u00fcks probleem \u00f5iguste andmisega katalogisse sisenemiseks (cd), s\u00f5ltumata kataloogide t\u00e4itmis\u00f5iguse lipu olekust. Katalooge sai avada isegi siis, kui ACL (\"deny \u2014 execute\") kaudu oli selgelt keelatud. <\/p>\n

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

Allikas: 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\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\udd47OpenZFS-is avastatud haavatavus, mis rikub ligip\u00e4\u00e4su\u00f5iguste t\u00f6\u00f6tlemist FreeBSD-s | ProHoster","description":"OpenZFS koodi 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