{"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\/nl\/blog\/news\/uyazvimost-v-postgresql-pozvolyayushhaya-vypolnit-sql-kod-s-pravami-polzovatelya-zapuskayushhego-pg_dump","title":{"rendered":"Kwetsbaarheid in PostgreSQL die het mogelijk maakt SQL-code uit te voeren met de rechten van de gebruiker die pg_dump uitvoert","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Corrigerende updates zijn opgesteld voor alle ondersteunde versies van PostgreSQL 16.4, 15.8, 14.13, 13.16, 12.20, waarin 56 fouten zijn verholpen die de afgelopen drie maanden zijn ontdekt. Onder andere is in de nieuwe versies een kwetsbaarheid (CVE-2024-7348) verholpen, gemarkeerd als gevaarlijk (gevaarniveau 8.8 van 10). De kwetsbaarheid wordt veroorzaakt door een raceconditie in de pg_dump-tool, waarmee een aanvaller, die de mogelijkheid heeft om permanente objecten in de database te maken en te verwijderen, onrechtmatig SQL-code kan uitvoeren met de rechten van de gebruiker waaronder pg_dump wordt uitgevoerd (gewoonlijk wordt pg_dump met supergebruikersrechten uitgevoerd voor het maken van een databaseback-up). <\/p>\n

Voor een succesvolle aanval is het nodig om het moment van het starten van de pg_dump-hulpmiddel te volgen, wat eenvoudig kan worden gerealiseerd door manipulaties met een open transactie. De aanval komt neer op het vervangen van een sequentie door een weergave of externe tabel die de uitvoerbare SQL-code definieert, op het moment dat pg_dump wordt gestart, wanneer de informatie over de aanwezigheid van de sequentie al is verkregen, maar de gegevens nog niet zijn weergegeven. Om de kwetsbaarheid te verhelpen, is de instelling \u2018restrict_nonsystem_relation_kind\u2019 toegevoegd, die het onthullen van niet-systeemweergaven en toegang tot externe tabellen in pg_dump verbiedt.
\n
Bron: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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\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\udd47Kwetsbaarheid in PostgreSQL, die het mogelijk maakt om SQL-code uit te voeren met de rechten van de gebruiker die pg_dump uitvoert | ProHoster","description":"Corrigerende updates zijn opgesteld voor alle ondersteunde versies van PostgreSQL 16.4, 15.8, 14.13, 13.16, 12.20, waarin 56 fouten zijn verholpen die de afgelopen drie maanden zijn 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