{"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\/fr\/blog\/news\/uyazvimost-v-postgresql-pozvolyayushhaya-vypolnit-sql-kod-s-pravami-polzovatelya-zapuskayushhego-pg_dump","title":{"rendered":"Vuln\u00e9rabilit\u00e9 dans PostgreSQL permettant l'ex\u00e9cution de code SQL avec les droits de l'utilisateur ex\u00e9cutant pg_dump","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Des mises \u00e0 jour correctrices ont \u00e9t\u00e9 form\u00e9es pour toutes les branches prises en charge de PostgreSQL 16.4, 15.8, 14.13, 13.16, 12.20, corrigeant 56 erreurs identifi\u00e9es au cours des trois derniers mois. Parmi d'autres, les nouvelles versions corrigent une vuln\u00e9rabilit\u00e9 (CVE-2024-7348), qualifi\u00e9e de dangereuse (niveau de risque 8.8 sur 10). Cette vuln\u00e9rabilit\u00e9 est caus\u00e9e par un \u00e9tat de comp\u00e9tition dans l'utilitaire pg_dump, permettant \u00e0 un attaquant ayant la capacit\u00e9 de cr\u00e9er et de supprimer des objets permanents dans la base de donn\u00e9es d'ex\u00e9cuter un code SQL arbitraire avec les droits de l'utilisateur sous lequel l'utilitaire pg_dump est ex\u00e9cut\u00e9 (g\u00e9n\u00e9ralement, pg_dump est ex\u00e9cut\u00e9 avec les droits d'un superutilisateur pour la sauvegarde de la base de donn\u00e9es). <\/p>\n

Pour mener \u00e0 bien une attaque, il est n\u00e9cessaire de suivre le moment o\u00f9 l'utilitaire pg_dump est lanc\u00e9, ce qui peut \u00eatre facilement r\u00e9alis\u00e9 par des manipulations avec une transaction ouverte. L'attaque consiste \u00e0 remplacer une s\u00e9quence (sequence) par une vue ou une table externe, d\u00e9finissant le code SQL ex\u00e9cut\u00e9, au moment du lancement de pg_dump, lorsque l'information sur l'existence de la s\u00e9quence a d\u00e9j\u00e0 \u00e9t\u00e9 obtenue, mais que les donn\u00e9es n'ont pas encore \u00e9t\u00e9 extraites. Pour bloquer cette vuln\u00e9rabilit\u00e9, un param\u00e8tre «restrict_nonsystem_relation_kind» a \u00e9t\u00e9 ajout\u00e9, interdisant la divulgation de vues non syst\u00e9miques et l'acc\u00e8s aux tables externes dans pg_dump.
\n
Source : 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\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\udd47Vuln\u00e9rabilit\u00e9 dans PostgreSQL permettant d'ex\u00e9cuter du code SQL avec les droits de l'utilisateur ex\u00e9cutant pg_dump | ProHoster","description":"Des mises \u00e0 jour correctrices ont \u00e9t\u00e9 form\u00e9es pour toutes les branches prises en charge de PostgreSQL 16.4, 15.8, 14.13, 13.16, 12.20, corrigeant 56 erreurs identifi\u00e9es au cours des trois 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