{"id":119252,"date":"2024-08-09T15:43:07","date_gmt":"2024-08-09T13:43:07","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-postgresql-pozvolyayushhaya-vypolnit-sql-kod-s-pravami-polzovatelya-zapuskayushhego-pg_dump"},"modified":"2024-08-09T15:43:07","modified_gmt":"2024-08-09T13:43:07","slug":"uyazvimost-v-postgresql-pozvolyayushhaya-vypolnit-sql-kod-s-pravami-polzovatelya-zapuskayushhego-pg_dump","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/uyazvimost-v-postgresql-pozvolyayushhaya-vypolnit-sql-kod-s-pravami-polzovatelya-zapuskayushhego-pg_dump","title":{"rendered":"Sebezhet\u0151s\u00e9g a PostgreSQL-ben, amely lehet\u0151v\u00e9 teszi SQL-k\u00f3d v\u00e9grehajt\u00e1s\u00e1t a pg_dump-ot elind\u00edt\u00f3 felhaszn\u00e1l\u00f3 jogainak keretein bel\u00fcl.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

K\u00e9sz\u00fcltek jav\u00edt\u00f3 friss\u00edt\u00e9sek az \u00f6sszes t\u00e1mogatott PostgreSQL 16.4, 15.8, 14.13, 13.16, 12.20 \u00e1ggal, amelyek 56 hib\u00e1t jav\u00edtanak, amelyek az utols\u00f3 h\u00e1rom h\u00f3napban mer\u00fcltek fel. A leg\u00fajabb verzi\u00f3k k\u00f6z\u00f6tt egy vesz\u00e9lyes (8.8-as vesz\u00e9lyess\u00e9gi szinttel) sebezhet\u0151s\u00e9get is kijav\u00edtottak (CVE-2024-7348). A sebezhet\u0151s\u00e9get egy versenyhelyzet okozza a pg_dump seg\u00e9dprogramban, amely lehet\u0151v\u00e9 teszi a t\u00e1mad\u00f3 sz\u00e1m\u00e1ra, aki k\u00e9pes \u00e1lland\u00f3 objektumokat l\u00e9trehozni \u00e9s t\u00f6r\u00f6lni az adatb\u00e1zis-kezel\u0151 rendszerben, hogy tetsz\u0151leges SQL-k\u00f3dot hajtson v\u00e9gre a pg_dump \u00e1ltal futtatott felhaszn\u00e1l\u00f3i jogosults\u00e1gokkal (\u00e1ltal\u00e1ban a pg_dump alap\u00e9rtelmez\u00e9s szerint szuperfelhaszn\u00e1l\u00f3i jogokkal fut az adatb\u00e1zis ment\u00e9se sor\u00e1n). <\/p>\n

A sikeres t\u00e1mad\u00e1shoz nyomon kell k\u00f6vetni a pg_dump eszk\u00f6z elind\u00edt\u00e1s\u00e1nak pillanat\u00e1t, amely k\u00f6nnyen megval\u00f3s\u00edthat\u00f3 egy nyitott tranzakci\u00f3 manipul\u00e1ci\u00f3j\u00e1val. A t\u00e1mad\u00e1s l\u00e9nyege, hogy a f\u0151 SQL-k\u00f3dot vez\u00e9rl\u0151 f\u00fct\u00e9s (sequence) a pg_dump elind\u00edt\u00e1s\u00e1nak pillanat\u00e1ban egy n\u00e9zettel vagy k\u00fcls\u0151 t\u00e1bl\u00e1val helyettes\u00edt\u0151dik, amikor a f\u00fct\u00e9s megl\u00e9t\u00e9r\u0151l m\u00e1r inform\u00e1ci\u00f3 \u00e1ll rendelkez\u00e9sre, de az adatok m\u00e9g nem ker\u00fcltek ki\u00edr\u00e1sra. A sebezhet\u0151s\u00e9g blokkol\u00e1s\u00e1hoz hozz\u00e1adt\u00e1k a \u201erestrict_nonsystem_relation_kind\u201d be\u00e1ll\u00edt\u00e1st, amely megakad\u00e1lyozza a nem rendszerszint\u0171 n\u00e9zetek \u00e9s k\u00fcls\u0151 t\u00e1bl\u00e1k felfed\u00e9s\u00e9t a pg_dump sor\u00e1n.
\n
Forr\u00e1s: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0421\u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u044b \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u0434\u043b\u044f \u0432\u0441\u0435\u0445 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u043c\u044b\u0445 \u0432\u0435\u0442\u043e\u043a PostgreSQL 16.4, 15.8, 14.13, 13.16, 12.20, \u0432 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u043e 56 \u043e\u0448\u0438\u0431\u043e\u043a, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u043d\u044b\u0445 \u0437\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0438\u0435 \u0442\u0440\u0438 \u043c\u0435\u0441\u044f\u0446\u0430. \u0421\u0440\u0435\u0434\u0438 \u043f\u0440\u043e\u0447\u0435\u0433\u043e \u0432 \u043d\u043e\u0432\u044b\u0445 \u0432\u0435\u0440\u0441\u0438\u044f\u0445 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2024-7348), \u043f\u043e\u043c\u0435\u0447\u0435\u043d\u043d\u0430\u044f \u043a\u0430\u043a \u043e\u043f\u0430\u0441\u043d\u0430\u044f (\u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 8.8 \u0438\u0437 10). \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432\u044b\u0437\u0432\u0430\u043d\u0430 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435\u043c \u0433\u043e\u043d\u043a\u0438 \u0432 \u0443\u0442\u0438\u043b\u0438\u0442\u0435 pg_dump, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u043c \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0435\u043c\u0443, \u0438\u043c\u0435\u044e\u0449\u0435\u043c\u0443 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0438 \u0443\u0434\u0430\u043b\u0435\u043d\u0438\u044f \u043f\u043e\u0441\u0442\u043e\u044f\u043d\u043d\u044b\u0445 \u043e\u0431\u044a\u0435\u043a\u0442\u043e\u0432 […]<\/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-119252","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\u00e9g a PostgreSQL-ben, amely lehet\u0151v\u00e9 teszi SQL-k\u00f3d v\u00e9grehajt\u00e1s\u00e1t a pg_dump-ot ind\u00edt\u00f3 felhaszn\u00e1l\u00f3 jogainak birtok\u00e1ban | ProHoster","description":"K\u00e9sz\u00fcltek jav\u00edt\u00f3 friss\u00edt\u00e9sek az \u00f6sszes t\u00e1mogatott PostgreSQL 16.4, 15.8, 14.13, 13.16, 12.20 \u00e1ggal, amelyek 56 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