Dify is an open-source LLM app development platform. Prior to 1.13.0, the /console/api/remote-files/upload endpoint in api/controllers/web/remote_files.py accepted an attacker-controlled URL without authentication and caused the Dify server to retrieve it. A remote attacker could use the endpoint to send requests to internal services or cloud metadata endpoints, potentially exposing sensitive data and using the server as a network pivot. This issue is fixed in version 1.13.0.
Weakness
The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.
Related Attack Patterns
References
- https://github.com/langgenius/dify/commit/2f87ecc0ce1d05ab3ef9537f29b84a5fa5823017
- https://github.com/langgenius/dify/pull/32236
- https://github.com/langgenius/dify/releases/tag/1.13.0
- https://github.com/langgenius/dify/security/advisories/GHSA-8235-vv5j-mmvg
- https://github.com/langgenius/dify/security/advisories/GHSA-8235-vv5j-mmvg