CVE-2025-24293
Publiée le 2026-01-30 · Dernière modification le 2026-07-15
Les applications Ruby on Rails utilisant Active Storage avec les gems `image_processing` et `mini_magick` sont concernées si elles permettent aux utilisateurs de définir les paramètres de transformation des images. Un attaquant peut exploiter cette faille via le réseau pour injecter des commandes système, pouvant potentiellement mener à un contrôle total du serveur. Cette action est facile à exécuter car elle ne nécessite ni authentification ni interaction de l'utilisateur, à condition que l'application accepte des entrées non fiables pour les variantes d'images.
DÉTAIL DU VECTEUR CVSS
RÉFÉRENCES
Description officielle du NVD (en anglais)
# Active Storage allowed transformation methods potentially unsafe Active Storage attempts to prevent the use of potentially unsafe image transformation methods and parameters by default. The default allowed list contains three methods allow for the circumvention of the safe defaults which enables potential command injection vulnerabilities in cases where arbitrary user supplied input is accepted as valid transformation methods or parameters. Impact ------ This vulnerability impacts applications that use Active Storage with the image_processing processing gem in addition to mini_magick as the image processor. Vulnerable code will look something similar to this: ``` <%= image_tag blob.variant(params[:t] => params[:v]) %> ``` Where the transformation method or its arguments are untrusted arbitrary input. All users running an affected release should either upgrade or use one of the workarounds immediately. Workarounds ----------- Consuming user supplied input for image transformation methods or their parameters is unsupported behavior and should be considered dangerous. Strict validation of user supplied methods and parameters should be performed as well as having a strong [ImageMagick security policy](https://imagemagick.org/script/security-policy.php) deployed. Credits ------- Thank you [lio346](https://hackerone.com/lio346) for reporting this!