CVE-2023-50731

Summary

CVE-2023-50731 is a vulnerability affecting MindsDB, an SQL Server for artificial intelligence, prior to version 23.11.4.1. The issue lies in the `put` method of `mindsdb/mindsdb/api/http/namespaces/file.py`, which fails to validate user-controlled input used in creating a temporary file name. Malicious actors can exploit this path injection vulnerability to write arbitrary files outside of the intended directory. Although Mindsdb later checks for specific file types on line 149 in the `save_file` method, this check occurs after the file has been written, resulting in the persistence of the potentially dangerous files. An attacker can also delete `zip` or `tar.gz` files on the server due to another path injection vulnerability on line 138.

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