CVE-2023-50731
Vulnérabilité critique dans mindsdb (mindsdb)
Description
MindsDB is a SQL Server for artificial intelligence. Prior to version 23.11.4.1, the `put` method in `mindsdb/mindsdb/api/http/namespaces/file.py` does not validate the user-controlled name value, which is used in a temporary file name, which is afterwards opened for writing on lines 122-125, which leads to path injection. Later in the method, the temporary directory is deleted on line 151, but since we can write outside of the directory using the path injection vulnerability, the potentially dangerous file is not deleted. Arbitrary file contents can be written due to `f.write(chunk)` on line 125. Mindsdb does check later on line 149 in the `save_file` method in `file-controller.py` which calls the `_handle_source` method in `file_handler.py` if a file is of one of the types `csv`, `json`, `parquet`, `xls`, or `xlsx`. However, since the check happens after the file has already been written, the files will still exist (and will not be removed due to the path injection described earlier), just the `_handle_source` method will return an error. The same user-controlled source source is used also in another path injection sink on line 138. This leads to another path injection, which allows an attacker to delete any `zip` or `tar.gz` files on the server.
Gravité et risque d'exploitation
CVE-2023-50731 obtient un score CVSS de 9.1/10, soit une gravité critique. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 0.98 %, ce qui la place devant 61.7 % des CVE référencées.
Que faire ?
- Vérifiez si mindsdb (versions < 23.11.4.1) est présent sur votre parc.
- Appliquez le correctif ou la version corrigée indiqués dans les références de l'éditeur.
- À défaut de correctif, limitez l'exposition (filtrage réseau, désactivation du composant).
- Automatisez la détection : les agents CVE Heimdall (gratuits, open source) corrèlent l'inventaire de vos serveurs avec la base CVE.
Références
- https://securitylab.github.com/advisories/GHSL-2023-182_GHSL-2023-184_mindsdb_mindsdb/
- https://github.com/mindsdb/mindsdb/security/advisories/GHSA-j8w6-2r9h-cxhj
- https://github.com/mindsdb/mindsdb/blob/1821da719f34c022890c9ff25810218e71c5abbc/mindsdb/api/http/namespaces/file.py#L122-L125
- https://github.com/mindsdb/mindsdb/blob/1821da719f34c022890c9ff25810218e71c5abbc/mindsdb/api/http/namespaces/file.py#L138